Washbowl

Abstract

To provide a washbowl with satisfactory external appearance by making a drain plug of the washbowl less visible from a user, and configured to enable cleaning and maintenance of the drain plug.SOLUTION: A washbowl 10 comprises a lower bowl 14 including a drain plug 20 formed on a bottom surface and draining inflow water from the drain plug 20, and an upper bowl 12 including an upper drain port 16 formed on a bottom surface, draining inflow water from the upper drain port 16 toward the lower bowl 14 and disposed at an upper layer of the lower bowl 14. The upper bowl 12 is formed to be removable from the lower bowl 14.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This invention relates to the structure of a washbowl. and manufacturing method

Background Art

[0002] The drain plug of a conventional washbowl is visible to the user and has an unfavorable appearance. Therefore, a washbasin with a favorable appearance has been proposed in which the drain plug (drain hole) of the washbasin is made less visible to the user (Patent Document 1). Also, a washbasin with a favorable appearance has been proposed in which the drain plug (opening) of the washbasin is made less visible to the user (Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, although the washbasin of Patent Document 1 can cover the drain plug with a drain fitting part, the drain fitting part is visible to the user and has an unfavorable appearance. Also, although the washbasin of Patent Document 2 can cover the drain plug with a plug member, the plug member is visible to the user and has an unfavorable appearance. This invention has been made in view of the conventional problems, and provides a washbowl including a lower bowl having a drain plug on the bottom surface and an upper bowl disposed on the upper layer thereof, wherein the upper bowl is detachably formed so that the drain plug is not visible to the user.

Means for Solving the Problems

[0005] ​The washbowl according to claim 1 of the present invention is a lower bowl having a drain plug formed on the bottom surface and draining the inflowed water from the drain plug, an upper bowl disposed on an upper layer of the lower bowl having an upper drain opening formed on the bottom surface and draining the inflowed water from the upper drain opening toward the lower bowl, and comprising wherein the upper bowl is detachably disposed on the upper layer of the lower bowl. The washbowl according to claim 2 of the present invention is wherein the upper bowl and the lower bowl include an attachment portion for attaching the upper bowl and the lower bowl together, and the upper bowl is detachably disposed on the upper layer of the lower bowl by the attachment portion. The washbowl according to claim 3 of the present invention is wherein the upper bowl and the lower bowl include a first positioning portion and a second positioning portion for aligning the positions of the upper bowl and the lower bowl, and the upper bowl and the lower bowl are connected and integrated by the first positioning portion and the second positioning portion built in the upper bowl and the lower bowl. The washbowl according to claim 4 of the present invention is wherein the positioning portion is composed of an upper positioning portion built in the upper bowl and a lower positioning portion built in the lower bowl, the upper positioning portion is formed by connecting an upper positioning hole and an upper positioning member by an adhesive bonding portion, and the lower positioning portion is formed by connecting a lower positioning hole and a lower positioning member by an adhesive bonding portion. The washbowl according to claim 5 of the present invention is wherein the positioning member is composed of a pin member built in the lower bowl and a recessed member built in the upper bowl, and they are connected by engaging the pin member and the recessed member. The washbowl according to claim 6 of the present invention is The lower end of the upper positioning portion and the upper end of the lower positioning portion are in contact with each other so as to be separable. It is characterized in that the lower end of the upper positioning portion and the upper end of the lower positioning portion are not in contact with each other. The washbowl according to claim 7 of the present invention is It is characterized in that the pin member and the recessed member are engaged with each other so as to be separable. The washbowl according to claim 8 of the present invention is The upper bowl is separable from the lower bowl when moved upward. The washbowl according to claim 9 of the present invention is It is characterized in that a drain strainer is fitted into the drain plug formed on the bottom surface of the lower bowl. The washbowl according to claim 10 of the present invention is The upper bowl is formed with a weir portion for blocking water upward from the upper surface. The upper bowl is formed with an overflow opening for discharging water flowing into the other side of the weir portion beyond the top of the weir portion to the lower bowl. The washbowl according to claim 11 of the present invention is When the upper bowl is disposed on the upper layer of the lower bowl inside the upper bowl and the lower bowl, an exhaust portion for exhausting air contained between the upper bowl and the lower bowl to a region on the right of the right side surface of the washbowl and a region on the left of the left side surface of the washbowl is provided. The washbowl according to claim 12 of the present invention is The exhaust portion is A right exhaust portion for exhausting air contained between the upper bowl and the lower bowl to a region on the right of the right side surface of the washbowl, A left exhaust portion for exhausting air contained between the upper bowl and the lower bowl to a region on the left of the left side surface of the washbowl, It is characterized by comprising The method for attaching the upper bowl and the lower bowl of the washbowl according to claim 13 of the present invention is a method of attaching the positioning member to the upper positioning hole, attaching the positioning member to the lower positioning hole, and attaching the upper bowl and the lower bowl, a step of inserting the positioning member into the upper positioning hole, injecting an adhesive into the upper positioning hole, and temporarily fixing the positioning member in the upper positioning hole; a step of inserting the positioning member into the lower positioning hole, injecting the adhesive into the lower positioning hole, and temporarily fixing the positioning member in the lower positioning hole; a step of placing the upper bowl on the lower bowl and adjusting the position of the positioning member inside the upper positioning hole into which the adhesive has been injected, and adjusting the position of the positioning member inside the lower positioning hole into which the adhesive has been injected; a step of maintaining the state in which the upper bowl is placed on the lower bowl, curing the adhesive injected into the upper positioning hole to change it into an adhesive joint portion, thereby firmly fixing the positioning member in the upper positioning hole, and curing the adhesive injected into the lower positioning hole to change it into an adhesive joint portion, thereby firmly fixing the positioning member in the lower positioning hole; characterized by comprising. The method for attaching the upper bowl and the lower bowl of the washbowl according to claim 14 of the present invention is a part of the positioning member is a recessed member, a part of the positioning member is a pin member, characterized in that the protrusion of the pin member is configured to fit into the recess of the recessed member.

Advantages of the Invention

[0006] The washbowl according to the present invention can provide a washbowl with a good appearance that makes the drain plug of the washbowl difficult for the user to see and enables cleaning and maintenance of the drain plug.

[0007] The above objects, other objects, features, and advantages of the present invention will become more apparent from the following description of the embodiments for carrying out the invention with reference to the drawings.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 4C

Figure 4D

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12A

Figure 12B

Figure 13A

Figure 13B

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that the embodiments shown below are an example of embodying the present invention and do not limit the technical scope of the present invention.

[0010] In this specification, as shown in FIGS. 1 and 2, the upper side (upper) and the lower side (lower) refer to the side of the upper bowl 12 formed at the upper part of the washbowl 10 as "upper side (upper)", and the side of the lower bowl 14 formed at the lower part of the upper bowl is referred to as "lower side (lower)". In this specification, the front side shown in FIG. 1 is referred to as the front side, front or front side, the opposite side is referred to as the rear or rear side, the right side is referred to as the right side, and the left side is referred to as the left side.

[0011] The washbowl 10 according to this invention includes a lower bowl 14 having a drain plug 20 formed at the bottom surface for draining the inflowing water from the drain plug 20, and an upper bowl 12 disposed in the upper layer of the lower bowl 14 having an upper drain port 16 formed at the bottom surface for draining the inflowing water from the upper drain port 16 toward the lower bowl 14. The upper bowl 12 is detachably disposed in the upper layer of the lower bowl 14.

[0012] The upper bowl 12 and the lower bowl 14 include an attachment portion 30 for combining the upper bowl 12 and the lower bowl 14. The upper bowl 12 is detachably disposed in the upper layer of the lower bowl 14 by the attachment portion 30.

[0013] The upper bowl 12 and the lower bowl 14 include a first positioning portion 24 and a second positioning portion 26 for aligning the positions of the upper bowl 12 and the lower bowl 14. The upper bowl 12 and the lower bowl 14 are connected and integrated by a first positioning portion 24 and a second positioning portion 26 built inside the upper bowl 12 and the lower bowl 14.

[0014] Attachment The portion 30 is composed of an upper first positioning portion 24a built in the upper bowl 12 and a lower first positioning portion 24d built in the lower bowl 14, and is composed of an upper second positioning portion 26a built in the upper bowl 12 and a lower second positioning portion 26d built in the lower bowl 14. The upper first positioning portion 24a is formed by connecting an upper first positioning hole 24b and an upper first recessed member 24c by an adhesive bonding portion 28A. The lower first positioning portion 24d is formed by connecting a lower first positioning hole 24e and a lower first pin member 24f by an adhesive bonding portion 28B. The upper second positioning portion 26a is formed by connecting an upper second positioning hole 26b and an upper second recessed member 26c by an adhesive bonding portion 28C. The lower second positioning portion 26d 2 is formed by connecting a lower second positioning hole 26e and a lower

[0015] Attachment The portion 30 is composed of a lower first pin member 24f and a lower second pin member 26f built in the lower bowl 14, and an upper first recessed member 24c and an upper second recessed member 26c built in the upper bowl 12, and is connected by engaging the lower first pin member 24f with the upper first recessed member 24c, and engaging the lower second pin member 26f with the upper second recessed member 26c.

[0016] The lower end of the upper first positioning portion 24a and the upper end of the lower first positioning portion 24d, and The lower end of the upper second positioning portion 26a and the upper end of the lower second positioning portion 26d are in contact so as to be separable, The lower end of the upper first positioning portion 24a and the upper end of the lower first positioning portion 24d, and It is characterized in that the lower end of the upper second positioning portion 26a and the upper end of the lower second positioning portion 26d are not in contact. .

[0017] The lower first pin member 24f and the upper first recessed member 24c, and the lower second pin member 26f and the upper second recessed member 26c are engaged so as to be separable.

[0018] The upper bowl 12 When moved upward, it is separable from the lower bowl 14.

[0019] Inside the upper bowl 12 and the lower bowl 14, when the upper bowl 12 is disposed in the upper layer of the lower bowl 14, an exhaust portion 180 for exhausting the air contained between the upper bowl 12 and the lower bowl 14 to a region to the right of the right side surface of the washbowl 10 and a region to the left of the left side surface of the washbowl 10 is provided. The exhaust portion 180 A right exhaust portion 182R for exhausting the air contained between the upper bowl 12 and the lower bowl 14 to a region to the right of the right side surface of the washbowl 10, and the air contained between the upper bowl 12 and the lower bowl 14 is exhausted to a region to the left of the left side surface of the washbowl 10 Left An exhaust portion 182L, are provided.

[0020] The method of attaching the upper first recessed member 24c to the upper first positioning hole 24b and attaching the lower first pin member 24f to the lower first positioning hole 24e is After placing the upper first recessed member 24c inside the upper first positioning hole 24b, injecting the adhesive 28 inside the upper first positioning hole 24b to temporarily fix the upper first recessed member 24c inside the upper first positioning hole 24b; Next, after placing the lower first pin member 24f inside the lower first positioning hole 24e, injecting the adhesive 28 inside the lower first positioning hole 24e to temporarily fix the lower first pin member 24f inside the lower first positioning hole 24e; Then, further, arranging the upper bowl 12 on the upper layer of the lower bowl 14 and adjusting the position inside the upper first positioning hole 24b of the upper first recessed member 24c and the position inside the lower first positioning hole 24e of the lower first pin member 24f; And then, while maintaining the state where the upper bowl 12 is arranged on the upper layer of the lower bowl 14, changing the adhesive 28 injected inside the upper first positioning hole 24b into the adhesive joint part 28A to fixedly secure the upper first recessed member 24c inside the upper first positioning hole 24b, and changing the adhesive 28 injected inside the lower first positioning hole 24e into the adhesive joint part 28B to fixedly secure the lower first pin member 24f inside the lower first positioning hole 24e; comprises.

[0021] The method of attaching the upper second recessed member 26c to the upper second positioning hole 26b and attaching the lower second pin member 26f to the lower second positioning hole 26e is as follows: After placing the upper second recessed member 26c inside the upper second positioning hole 26b, injecting the adhesive 28 inside the upper second positioning hole 26b to temporarily fix the upper second recessed member 26c inside the upper second positioning hole 26b; 2 Next, after placing the lower second pin member 26f inside the lower second positioning hole 26e, injecting the adhesive 28 inside the lower second positioning hole 26e to temporarily fix the lower second pin member 26f inside the lower second positioning hole 26e; Then, after placing the lower second pin member 26f inside the lower second positioning hole 26e, injecting the adhesive 28 inside the lower second positioning hole 26e to temporarily fix the lower second pin member 26f inside the lower second positioning hole 26e; Next, place the upper bowl 12 on the upper layer of the lower bowl 14 and adjust the positions inside the upper second positioning hole 26b of the upper second recessed member 26c and inside the lower second positioning hole 26e of the lower second pin member 26f. Then, while maintaining the state where the upper bowl 12 is placed on the upper layer of the lower bowl 14, cure the adhesive 28 injected into the upper second positioning hole 26b to change it into the adhesive joint portion 28C, and firmly fix the upper second recessed member 26c inside the upper second positioning hole 26b. Cure the adhesive 28 injected into the lower second positioning hole 26e to change it into the adhesive joint portion 28D, and firmly fix the lower second pin member 26f inside the lower second positioning hole 26e. It includes the above steps.

[0022] (First Embodiment)

[0023] As shown in FIG. 1, the washbowl 10 of the first embodiment includes an upper bowl 12 and a lower bowl 14, and the upper bowl 12 is formed to be detachable from the lower bowl 14. The upper bowl 12 and the lower bowl 14 are made of heavy artificial marble and will not shift with a weak force when stacked. Artificial marble is an artificial material that is a substitute for marble mainly composed of acrylic resin or polyester resin.

[0024] (Upper Bowl) As shown in FIG. 2, the upper bowl 12 is formed with a substantially rectangular shape on the planar side, and the planar side shape of the lower bowl 14 is also substantially the same, and the peripheries are formed to match without protruding.

[0025] On the upper part of the upper bowl 12, a peripheral wall portion 12a with a substantially rectangular opening shape on the planar side is formed to prevent the upper bowl 12 from being damaged or deformed by the force applied to the upper bowl 12. The peripheral wall portion 12a has a first peripheral wall portion 12a1 with a substantially rectangular shape on the front side in terms of the planar shape, a second peripheral wall portion 12a2 with a substantially rectangular shape on the right side, a third peripheral wall portion 12a3 with a substantially rectangular shape on the rear side, and a fourth peripheral wall portion 12a4 with a substantially rectangular shape on the left side. The peripheral wall portion 12a has a peripheral wall inner peripheral edge portion 12ai with a substantially rectangular opening shape on the inner peripheral edge of the lower end portion, and a peripheral wall outer peripheral edge portion 12ao with a substantially rectangular opening shape on the outer peripheral edge of the lower end portion.

[0026] As shown in FIG. 2, the upper bowl 12 has an upper bowl portion 40 with a substantially U-shaped cross-sectional side shape that receives the water flowing into the upper bowl 12 and hides the lower bowl 14 in a direction downward from the lower end portion of the peripheral wall portion 12a and is connected to the lower end portion of the peripheral wall portion 12a. The upper bowl portion 40 is as shown in FIG. 4A has an upper inner edge portion 42 with a substantially rectangular opening shape on the inner peripheral edge of the upper end portion, and an upper outer edge portion 44 with a substantially rectangular opening shape on the outer peripheral edge of the upper end portion. The upper inner edge portion 42 is continuous with the peripheral wall inner peripheral edge portion 12ai of the peripheral wall portion 12a. The upper bowl portion 40 has an upper Inside bowl Part 46 with a substantially U-shaped cross-sectional side shape that receives the water flowing into the upper bowl 12 and hides the lower bowl 14 formed on the inner surface surrounded by the upper inner edge portion 42. The upper bowl portion 40 is formed downward from the upper outer edge portion 44, faces the lower bowl 14, and has an upper outer bowl portion 50 with a substantially U-shaped cross-sectional side shape on the outer surface of the upper bowl portion 40 that hides the lower bowl 14. As shown in FIG. 3, the upper outer bowl portion 50 has a first upper outer bowl portion 52 on the front side, a second upper outer bowl portion 54 on the right side, a third upper outer bowl portion 56 on the rear side, and a fourth upper outer bowl portion 58 on the left side.

[0027] In the upper bowl 12, as shown in FIG. 4 and FigureAs shown in Fig. 5, the lower bowl 14 faces the upper bowl 12 in a substantially horizontal direction from the outer peripheral edge 12ao of the peripheral wall of the peripheral wall portion 12a toward the upper outer edge 44 of the upper bowl portion 40, and an upper joint portion 12c with a substantially rectangular opening shape in plan view for joining the upper bowl 12 and the lower bowl 14 is formed. The surface of the upper joint portion 12c and the surface of the lower joint portion 14c are joined together, and the upper bowl 12 and the lower bowl 14 are integrated. The surface of the upper joint portion 12c is a surface surrounding the entire circumference of the upper bowl 12, and the lower joint portion 14c is a surface surrounding the entire circumference of the lower bowl 14.

[0028] As shown in Fig. 2, the upper bowl 12 protrudes upward from a horizontal plane extending from the upper inner edge 42 of the upper bowl portion 40 toward the third peripheral wall portion 12a3, and a weir portion 60 with a substantially inverted U-shaped cross-sectional shape on the side and a height lower than that of the peripheral wall portion 12a is formed. The weir portion 60 has a weir outer surface portion 62 with a substantially inverted U-shaped cross-sectional shape on the outer surface, a weir right end portion 66R with a substantially rectangular elliptical cross-sectional shape at the right end, a weir left end portion 66L with a substantially rectangular elliptical cross-sectional shape at the left end, and a weir side edge portion 63 with a substantially linear planar shape at the rear side edge.

[0029] As shown in Fig. 2, in the upper bowl 12, within the region surrounded by the inner peripheral edge 12ai of the peripheral wall on the side of the third peripheral wall portion 12a3 and the weir side edge portion 63 of the weir portion 60 a tray portion 15 is formed. The tray portion 15 is in the shape of a relatively shallow dish, and has a relatively flat bottom surface on its upper surface for placing supplies and appliances related to the use of a tank system such as soap and shampoo. The tray portion 15 is provided with a tray portion 15a with a substantially rectangular planar shape for discharging the water accumulated on the upper surface of the tray portion 15 to the lower bowl 14 inside the upper bowl 12 from the upper surface to the lower surface of the tray portion 15 so as to be continuously provided with the weir portion 60 on the side of the weir portion 60. Hole It has.

[0030] The peripheral wall portion 12a is formed high so that water does not overflow from the upper bowl 12. The weir portion 60 is lower in height than the peripheral wall portion 12a, and the water overflowing from the upper inner bowl portion 46 flows into the tray portion 15 over the weir portion 60 without exceeding the peripheral wall portion 12a, and the water flowing into the other side of the weir portion 60 over the top of the weir portion 60 flows into the tray hole portion 15a formed in the tray portion 15 and is configured to be drained into the lower bowl 14.

[0031] As shown in FIG. 2, in the upper bowl 12, a drain port 16 having a substantially oblong elliptical shape in plan view is formed at the center of the bottom surface of the upper inner bowl portion 46. Upper side is formed. Upper side Downward from the drain port 16 toward the inside of the upper bowl 12, Upper side an upper drain hole 18 having a substantially oblong elliptical shape in plan view is formed so as to be continuously provided with the drain port 16. As shown in FIG. 3, in the upper bowl 12, an upper lower drain port 19 having a substantially oblong elliptical shape in plan view, which is an opening formed at the center of the upper outer bowl portion 50 in plan view, is formed at the lower end of the upper drain hole 18. The upper inner bowl portion 46 The water flowing into it Upper side from the drain port 16 Upper side to the lower part of the drain port 16 Upper side flows into the upper drain hole 18 formed so as to be continuously provided with the drain port 16, and is drained from the upper lower drain port 19, which is the lower end portion of the upper drain hole 18 and is an opening formed at the center of the upper outer bowl portion 50 in plan view, and flows into the lower bowl 14.

[0032] (Lower bowl) As shown in FIG. 2, the lower bowl 14 is formed with a substantially rectangular shape in plan view, and the plan view shape of the upper bowl 12 is also substantially the same, and is formed so as to match without the periphery protruding.

[0033] On the upper surface portion of the lower bowl 14, a lower joint portion 14c having a substantially rectangular opening shape in plan view, which faces the upper joint portion 12c of the upper bowl 12 and joins with the upper joint portion 12c of the upper bowl 12, is formed. As shown in Fig. 4, the upper bowl 12 is attached to the lower bowl 14 by joining the lower joint portion 14c of the lower bowl 14 to the upper joint portion 12c of the upper bowl 12. The surface of the upper joint portion 12c and the surface of the lower joint portion 14c are joined together, and the upper bowl 12 and the lower bowl 14 are integrated. The surface of the upper joint portion 12c is a surface that surrounds the entire circumference of the upper bowl 12, and the surface of the lower joint portion 14c is a surface that surrounds the entire circumference of the lower bowl 14.

[0034] As shown in Fig. 2, the lower bowl 14 has a lower bowl portion 70 formed with a substantially U-shaped cross-sectional side shape that receives water drained from the upper lower drain port 19 of the upper bowl 12 and flowing into the lower bowl portion 70, extending downward from the lower joint portion 14c in a continuous manner with the lower joint portion 14c.

[0035] The lower bowl portion 70 has a lower inner bowl portion 72 formed on its inner surface with a substantially U-shaped cross-sectional side shape that receives water drained from the upper lower drain port 19 of the upper bowl 12 and flowing into the lower bowl portion 70. The lower inner bowl portion 72 has a first lower inner bowl portion 74 on the front side with a substantially arc-shaped cross-sectional side shape, a second lower inner bowl portion 78 on the right side with a substantially arc-shaped cross-sectional front shape, a third lower inner bowl portion 82 on the rear side with a substantially arc-shaped cross-sectional side shape, and a fourth lower inner bowl portion 86 on the left side with a substantially arc-shaped cross-sectional front shape. The first lower inner bowl portion 74 has a lower edge portion 76 of the first lower inner bowl portion with a substantially linear planar side shape at its lower edge portion. The second lower inner bowl portion 78 has a lower edge portion 80 of the second lower inner bowl portion with a substantially linear planar side shape at its lower edge portion. The third lower inner bowl portion 82 has a lower edge portion 84 of the third lower inner bowl portion with a substantially linear planar side shape at its lower edge portion. 3 The fourth lower inner bowl portion 86 has a lower edge portion 88 of the fourth lower inner bowl portion with a substantially linear planar side shape at its lower edge portion. The fourth lower inner bowl portion 86 has a lower edge portion 88 of the fourth lower inner bowl portion with a substantially linear planar side shape at its lower edge portion. 4 The fourth lower inner bowl portion 86 has a lower edge portion 88 of the fourth lower inner bowl portion with a substantially linear planar side shape at its lower edge portion. The lower edge 76 of the first lower inner bowl portion, the lower edge 80 of the second lower inner bowl portion, the lower edge 84 of the third lower inner bowl portion, and the 4 lower edge of the 88 lower inner bowl portion form a lower inner edge portion 73 whose planar side shape is substantially rectangular.

[0036] Lower bowl portion 70 is As shown in Figures 3 and 4, formed with a lower outer bowl portion 90 on the outer surface, the side cross-sectional shape of which forms the outer surface of the lower bowl 14 and is substantially U-shaped. The lower outer bowl portion 90 has a first lower outer bowl portion 92 on the front side, the side cross-sectional shape of which is substantially arc-shaped, a second lower outer bowl portion 94 on the right side, the front cross-sectional shape of which is substantially arc-shaped, a third lower outer bowl portion 96 on the rear side, the side cross-sectional shape of which is substantially arc-shaped, and a fourth lower outer bowl portion 98 on the left side, the front cross-sectional shape of which is substantially arc-shaped. The lower outer bowl portion 90 has a lower edge portion 91 of the lower outer bowl portion whose planar shape is substantially rectangular at the lower edge.

[0037] In the washbowl 10, as shown in FIG. 1 to Figure 4, when the upper bowl 12 is arranged on the upper layer of the lower bowl 14, air contained between the upper bowl 12 and the lower bowl 14 is exhausted to the region on the right side of the second peripheral wall portion 12a2 and the second lower inner bowl portion 78 and the region on the left side of the fourth peripheral wall portion 12a4 and the fourth lower inner bowl portion 86 to prevent the pressure of the air contained between the upper bowl 12 and the lower bowl 14 from increasing, and to facilitate the inflow of water from the upper lower drain opening 19 of the upper bowl 12 into the Lower bowl lower bowl 14, an exhaust portion 180 is formed.

[0038] As shown in FIG. 3 and Figure 4 the exhaust portion 180 is on the right side. When the upper bowl 12 is arranged on the upper layer of the lower bowl 14, air contained between the upper bowl 12 and the lower bowl 14 is exhausted to the second peripheral wall portion 12a2 and the second lower inner bowl portion 78Exhausting to the area on the right side, formed so as to protrude from the third peripheral wall portion 12a3 on the side of the second peripheral wall portion 12a2 and the third lower inner bowl portion 82 on the side of the second lower inner bowl portion 78 toward the lower edge portion 84 of the third lower inner bowl portion, a right exhaust portion 182R having a substantially rectangular side cross-sectional shape, On the left side, when the upper bowl 12 is disposed in the upper layer of the lower bowl 14, the air contained between the upper bowl 12 and the lower bowl 14 is exhausted to the area on the left side of the fourth peripheral wall portion 12a4 and the fourth lower inner bowl portion 86 Exhausting to the area on the left side, formed so as to protrude from the third peripheral wall portion 12a3 on the side of the fourth peripheral wall portion 12a4 and the third lower inner bowl portion 82 on the side of the fourth lower inner bowl portion 86 toward the lower edge portion 84 of the third lower inner bowl portion, a left exhaust portion 182L having a substantially rectangular side cross-sectional shape, It is formed by

[0039] The right exhaust portion 182R is as shown in FIG. 4B As shown, When the upper bowl 12 is disposed in the upper layer of the lower bowl 14, the air contained between the upper bowl 12 and the lower bowl 14 is exhausted to the area on the right side of the second peripheral wall portion 12a2. It has an upper right exhaust portion 184R formed so as to protrude from the third peripheral wall portion 12a3 on the side of the second peripheral wall portion 12a2 toward the lower edge portion 84 of the third lower inner bowl portion of the lower bowl 14, and having a substantially reverse concave side cross-sectional shape. When the upper bowl 12 is disposed in the upper layer of the lower bowl 14, the air contained between the upper bowl 12 and the lower bowl 14 is exhausted to the area on the right side of the second lower inner bowl portion 78 Exhausting to the area on the right side, formed so as to protrude from the third lower inner bowl portion 82 on the side of the second lower inner bowl portion 78 toward the lower edge portion 84 of the third lower inner bowl portion of the lower bowl 14, it has a lower right exhaust portion 186R having a substantially concave side cross-sectional shape.

[0040] The left exhaust portion 182L is as shown in FIG. 2 As shown, When the upper bowl 12 is disposed on the upper layer of the lower bowl 14, the air contained between the upper bowl 12 and the lower bowl 14 is exhausted to the left region of the fourth peripheral wall portion 12a4. The upper left exhaust portion 184L is formed to protrude from the third peripheral wall portion 12a3 on the side of the fourth peripheral wall portion 12a4 toward the lower edge portion 84 of the third lower inner bowl portion of the lower bowl 14, and has a substantially reverse concave shape in the side cross-sectional shape. When the upper bowl 12 is disposed on the upper layer of the lower bowl 14, the air contained between the upper bowl 12 and the lower bowl 14 86 is exhausted to the left region of the fourth lower inner bowl portion. The lower left exhaust portion 186L is formed to protrude from the third lower inner bowl portion 82 on the side of the fourth lower inner bowl portion 86 toward the lower edge portion 84 of the third lower inner bowl portion of the lower bowl 14, and has a substantially concave shape in the side cross-sectional shape.

[0041] The upper right exhaust portion 184R is shown in FIG. 3 and Figure 4 As shown, it has a substantially reverse U-shaped side cross-sectional shape inside the right end portion 66R of the weir portion, and the right inner end of the weir portion Part has Of the part an upper right exhaust port 67RО with a substantially semi-circular side surface shape which is an opening on the side of the second peripheral wall portion 12a2. The right inner end of the weir portion Of the part has an upper right exhaust hole portion 64R formed from an opening in the direction opposite to the upper right exhaust port 67RО toward the inside of the weir portion 60, and an upper right exhaust surface portion 65R with a substantially reverse U-shaped side cross-sectional shape is formed on the surface of the upper right exhaust hole portion 64R.

[0042] The lower right exhaust portion 186R As shown in Figures 2 and 3, has a first right water stop wall 100 with a substantially arc-shaped front side shape on the front side. On the back side of the first right water stop wall 100, there is a lower right protruding portion 120 which protrudes upward and has a substantially rectangular parallelepiped shape with the left half of the surface on the front side surface in contact with the back of the first right water stop wall 100. On the back side of the lower right protruding portion 120, as shown in FIG. 3, a second right water stop wall 140 with a substantially quarter-circular front side shape is formed with the right eighth part of the surface on the front side surface in contact with the back of the lower right protruding portion 120. At the upper edge of the first right water stop wall 100, a first upper right edge portion 102 having a substantially arc-shaped planar side shape is formed.

[0043] As shown in FIG. 2, the lower right protruding portion 120 has an upper right surface portion 126 on its upper surface, which is in a semi-cylindrical shape with the major axis direction of the third lower inner bowl portion 82 as the major axis direction. The lower right upper surface portion 126 is shown in FIG. 4D and Figure 16 and contacts the upper right exhaust surface portion 65R, which is the surface of the upper right exhaust hole portion 64R of the upper right exhaust portion 184R formed inside the weir portion 60, as shown. Or an appropriate gap is formed . The upper bowl 12 is laminated on the lower bowl 14 by inserting the lower right protruding portion 120 of the lower bowl 14 into the upper right exhaust hole portion 64R of the upper bowl 12. The lower right protruding portion 120 and the upper right exhaust hole portion 64R constitute the attachment portion 30.

[0044] The lower right exhaust portion 186R, as shown in FIG. 2 to Figure 4, when the upper bowl 12 is disposed on the upper layer of the lower bowl 14, has a right inner exhaust port 162 with a substantially arc-shaped planar side shape for exhausting the air contained between the upper bowl 12 and the lower bowl 14 to the side of the back surface of the first right water stop wall 100 between the first upper right edge portion 102 of the first right water stop wall 100 and the second upper outer bowl portion 54 of the upper bowl 12. The first right water stop wall 100, as shown in FIGS. 2 and and Figure 4B , when the upper bowl 12 is disposed on the upper layer of the lower bowl 14, is formed with its upper part of the front surface inclined toward the upper edge portion of the first right water stop wall 100 so as to exhaust more air contained between the upper bowl 12 and the lower bowl 14 to the side of the back surface of the first right water stop wall 100. For this reason, the first right water stop wall 100 is formed with a substantially triangular side shape on the upper side of the side surface. The lower right exhaust portion 186R has Figures 3 and 4 , as shown, a lower right exhaust hole portion 160 with a substantially rectangular side cross-sectional shape within the range surrounded by the back surface of the first right water stop wall 100, the left side surface of the lower right protruding portion 120, and the front surface of the second right water stop wall 140. The lower right exhaust portion 186R is an opening formed in the second lower outer bowl portion 94 at the right end, and has a lower right exhaust port 166 with a substantially concave side surface shape for exhausting the air contained in the lower right exhaust hole portion 160 to a region on the right side of the second lower outer bowl portion 94. When the upper bowl 12 is disposed on the upper layer of the lower bowl 14, if the air contained between the upper bowl 12 and the lower bowl 14 is exhausted from the right inner exhaust port 162 through the lower right exhaust hole portion 160 and from the lower right exhaust port 166 to a region on the right side of the second lower outer bowl portion 94, it is possible to prevent the pressure of the air contained between the upper bowl 12 and the lower bowl 14 from increasing when the upper bowl 12 is disposed on the upper layer of the lower bowl 14. Therefore, from the upper lower drain port 19 of the upper bowl 12 Lower bowl water can easily flow into the bowl 14.

[0045] The upper bowl 12 Figures 2, 4A and As shown in 4B, it has a right end portion 66R of the weir portion with a substantially oblong side surface cross-sectional shape at the right end portion of the weir portion 60. This is because Lower the upper right exhaust port 67R of the upper right exhaust portion 184R located above the exhaust port 166 is enlarged, and Lower is connected to the right exhaust port 166. The air flowing in from the right inner exhaust port 162 is passed through a right exhaust hole portion 187R having a substantially rectangular side cross-sectional shape, which is a region surrounded by the upper right exhaust hole portion 64R and the lower right exhaust hole portion 160, and is exhausted more from the right exhaust port portion 189R formed by the lower right exhaust port 166 and the upper right exhaust port 67R to a region on the right side of the second lower outer bowl portion 94. Thus, more water can easily flow into the bowl 14 from the upper lower drain port 19 of the upper bowl 12. Lower bowl This is to make it easier for more water to flow into the bowl 14. The upper right exhaust hole portion 64R and the lower right exhaust hole portion 160 Surface constitute a right exhaust surface portion 188R, and the right inner exhaust port 162 is formed on the front side surface on the side of the lower edge portion 84 of the third lower inner bowl portion of the right exhaust surface portion 188R. Is is formed.

[0046] As shown in FIG. 3, the upper left exhaust portion 184L has a substantially inverted U-shaped side cross-sectional shape inside the left end portion 66L of the weir portion, that is, the left inner end Has a partand the left inner end of the weir portion Of the part It has an upper left exhaust port 67LO on the side of the fourth peripheral wall portion 12a4, which is an opening, and the side surface shape is substantially semicircular, and the left inner end of the weir portion Of the part An upper left exhaust hole portion 64L with a substantially inverted U-shaped side cross-sectional shape is formed from an opening in the direction opposite to the upper left exhaust port 67LO toward the inside of the weir portion 60, and an upper left exhaust surface portion 65L with a substantially inverted U-shaped side cross-sectional shape is formed on the surface of the upper left exhaust hole portion 64L.

[0047] The lower left exhaust portion 186L has a first left water stop wall 110 with a substantially arc-shaped front side shape on the front side, and on the back side of the first left water stop wall 110, it protrudes upward, and a substantially rectangular parallelepiped-shaped lower left protruding portion 130 in which substantially half of the surface on the right side of the front side surface is in contact with the back of the first left water stop wall 110. On the back side of the lower left protruding portion 130, as shown in FIG. 3, a second left water stop wall 150 with a substantially quarter-circular front side shape in which substantially one-eighth of the left side of the front side surface is in contact with the back of the lower left protruding portion 130 is formed. A first upper left edge portion 112 with a substantially arc-shaped planar side shape is formed on the upper edge of the first left water stop wall 110.

[0048] As shown in FIG. 2, the lower left protruding portion 130 has a lower left upper surface portion 136 on its upper surface, which is a semi-cylindrical shape with the major axis direction of the third lower inner bowl portion 82 as the major axis direction. The lower left upper surface portion 136 is in contact with the upper left exhaust surface portion 65L, which is the surface of the upper left exhaust hole portion 64L of the upper left exhaust portion 184L formed inside the weir portion 60, as shown in FIG. 4D and Figure 16 shown. Or an appropriate gap can be formed . When the lower left protruding portion 130 of the lower bowl 14 is inserted into the upper left exhaust hole portion 64L of the upper bowl 12, the upper bowl 12 is stacked on the lower bowl 14. When the lower left protruding portion 130 of the lower bowl 14 is inserted into the weir inner hole portion 64 of the upper bowl 12, the upper bowl 12 is stacked on the lower bowl 14. The lower left protruding portion 130 and the upper left exhaust hole portion 64L constitute the mounting portion 30.

[0049] As shown in FIG. 4, when the upper bowl 12 is disposed in the upper layer of the lower bowl 14, the lower left exhaust portion 186L has a left internal exhaust port 172 with a substantially arc-shaped planar shape for exhausting the air contained between the upper bowl 12 and the lower bowl 14 to the back side of the first left water stop wall 110 between the first upper left edge portion 112 of the first left water stop wall 110 and the fourth upper outer bowl portion 58 of the upper bowl 12. The first left water stop wall 110 is shown in FIG. 2 and 4B As shown, when the upper bowl 12 is disposed in the upper layer of the lower bowl 14, the upper part of the front surface is inclined toward the upper edge portion of the first left water stop wall 110 so as to exhaust more air contained between the upper bowl 12 and the lower bowl 14 to the back side of the first left water stop wall 110. For this reason, the upper side surface side shape of the first left water stop wall 110 is formed in a substantially triangular shape. The lower left exhaust portion 186L is shown in FIG. 3 and 4 As shown, within the range surrounded by the back surface of the first left water stop wall 110, the left side surface of the lower left protruding portion 1 3 0 and the front surface of the second left water stop wall 150, the lower left exhaust hole portion 170 having a substantially rectangular side cross-sectional shape is provided. The lower left exhaust portion 186L has, at the left end portion thereof, a lower left exhaust port 176 which is an opening formed in the fourth lower outer bowl portion 98 and has a substantially concave side surface shape for exhausting the air contained in the lower left exhaust hole portion 170 to a region on the left side of the fourth lower outer bowl portion 98. When the air contained between the upper bowl 12 and the lower bowl 14 is exhausted from the left internal exhaust port 172, passes through the lower left exhaust hole portion 170, and is exhausted from the lower left exhaust port 176 to a region on the left side of the fourth lower outer bowl portion 98 when the upper bowl 12 is disposed in the upper layer of the lower bowl 14, it is possible to prevent the pressure of the air contained between the upper bowl 12 and the lower bowl 14 from increasing when the upper bowl 12 is disposed in the upper layer of the lower bowl 14. Therefore, water can easily flow from the upper lower drain port 19 of the upper bowl 12 Lower bowl into the lower bowl 14.

[0050] As shown in FIG. 4C, the upper bowl 12 has a left end portion 66L of the weir portion 60 at the left end of the weir portion 60, and the side surface side cross-sectional shape thereof is substantially oblong. This is the left Lower By enlarging the upper left exhaust port 67LО of the upper left exhaust portion 184L located above the exhaust port 176, the left Lower It is connected to the exhaust port 176, and the air flowing in from the left internal exhaust port 172 is passed through the left exhaust hole portion 187L having a substantially rectangular side cross-sectional shape, which is a region surrounded by the upper left exhaust hole portion 64L and the lower left exhaust hole portion 170, and more exhaust is performed from the left exhaust port portion 189L formed by the lower left exhaust port 176 and the upper left exhaust port 67LО to a region on the left side of the fourth lower outer bowl portion 98. Thus, more water can flow into the upper bowl 14 from the upper lower drain port 19 of the upper bowl 12. Lower bowl This is to make it easier for more water to flow into the bowl 14. The upper left exhaust hole portion 64L and the lower left exhaust hole portion 170 Surface constitute the left exhaust surface portion 188L, and the left internal exhaust port 172 is formed on the front surface side of the left exhaust surface portion 188L on the side of the lower edge portion 84 of the third lower inner bowl portion. Is is formed.

[0051] The lower edge portion 76 of the first lower inner bowl portion, the lower edge portion 80 of the second lower inner bowl portion, the lower edge portion 84 of the third lower inner bowl portion, and the 4 lower edge portion of the lower inner bowl portion of 88 As shown in FIG. 2, they constitute a lower inner edge portion 73 having a substantially rectangular cross-sectional side shape.

[0052] As shown in FIG. 5, the lower inner bowl portion 72 has a lower central portion 99 having a substantially rectangular planar shape, which receives water drained from the upper lower drain port 19 of the upper bowl 12 and flowing into the lower bowl portion 70 so as to be continuously provided with the lower inner edge portion 73 from the inside of the region surrounded by the lower inner edge portion 73 downward into the inside of the lower bowl 14. The lower part of the lower central portion 99 protrudes downward from the region surrounded by the lower edge portion 91 of the lower outer bowl portion. The lower central portion 99 has a lower planar portion 99a having a substantially rectangular shape on the upper surface and a lower bottom portion 99b having a substantially rectangular shape on the lower surface. On the lower planar portion 99a, as shown in FIG. 2, at the central portion on the planar side, Upper a drain plug 20 having a substantially circular planar shape is formed to discharge the water drained from the upper lower drain opening 19 of the bowl 12 and flowing into the lower inner bowl portion 72 downward toward a position lower than the lower bowl 14. The drain plug 20 has a lower drain opening 20A at its central portion, which has a substantially circular planar shape and discharges the water drained from the upper lower drain opening 19 of the upper bowl 12 and flowing into the lower inner bowl portion 72 downward toward a position lower than the lower bowl 14. As shown in FIG. 5, the lower bowl 14 is formed with a lower drain hole 22 having a substantially cylindrical shape that is connected to the lower drain opening 20A and extends downward inside the lower bowl 14 from the lower drain opening 20A. At the lower end of the lower drain hole 22, a lower lower drain opening 23 is formed, which is an opening formed at the central portion on the planar side of the lower bottom portion 99b and has a substantially circular shape on the planar side. The water drained from the upper lower drain opening 19 of the upper bowl 12 and flowing into the lower inner bowl portion 72 flows into the lower drain hole 22 formed to be connected to the lower drain opening 20A below the lower drain opening 20A of the drain plug 20, and is drained from the lower lower drain opening 23, which is the lower end portion of the lower drain hole 22 and an opening formed at the central portion on the planar side of the lower outer bowl portion 90, and flows into a drain pipe 300 located lower than the lower bowl 14.

[0053] (Positioning portion) As shown in FIG. 4, the washbowl 10 is formed by connecting the upper bowl 12 and the lower bowl 14 that constitute it. The connection is made at two locations, a first positioning portion 24 formed at the front and a second positioning portion 26 formed on the other side, and an integrated washbowl 10 is formed. The first positioning portion 24 and the second positioning portion 26 formed on the other side are formed inside the peripheral edge on the other side of the washbowl 10 so as not to be visible from the outside. The washbowl 10 is below the first lower inner bowl portion EdgeFrom the first lower inner bowl portion 74 near the approximate center of the portion 76, upward into the first upper outer bowl portion 52 of the upper bowl 12 and the interior of the first lower inner bowl portion 74 of the lower bowl 14, as shown in FIG. 5, a first positioning portion 24 having a substantially cylindrical shape is formed.

[0054] The first positioning portion 24 is As shown in FIG. 3, below the first lower inner bowl portion Edge from near the approximate center of the portion 76 of the lower inner bowl portion 72 downward into the interior of the lower bowl 14, a lower first positioning portion 24d having a substantially cylindrical shape is formed, and As shown in FIG. 4, facing the lower first positioning portion 24d, as shown in FIG. 3, from the first upper outer bowl portion 52, downward as shown in FIG. 4, a first upper positioning portion 24a having a substantially cylindrical shape and protruding so as to be continuously provided with the first upper outer bowl portion 52 is formed, and is constituted thereby.

[0055] The upper first positioning portion 24a is constituted by an upper first positioning hole 24b which is a substantially cylindrical hole portion as shown in FIG. 7, an upper first recessed member 24c having a front cross-sectional shape substantially reversely concave and attached inside the upper first positioning hole 24b, and an adhesive joint portion 28A for adhesively joining the upper first positioning hole 24b and the upper first recessed member 24c. The upper first positioning hole 24b has an upper first hole upper surface portion 24b1 having a substantially circular planar shape on the upper surface and an upper first hole side surface portion 24b2 having a substantially cylindrical shape on the side surface, as shown in FIG. 7. The upper first recessed member 24c has an upper first upper surface portion 24c1 having a substantially circular planar shape on the upper surface, an upper first side surface portion 24c2 having a substantially cylindrical shape on the side surface, an upper first lower surface portion 24c3 having a substantially circular planar shape on the upper surface, and from the approximate center of the upper first lower surface portion 24c3 upward, the upper first DentIt has an upper first frustoconical engaging hole that forms a hole connected to the upper first lower surface portion 24c3 inside the member 24c and has a substantially frustoconical shape.

[0056] The lower first positioning portion 24d is shown in FIG. 7 and 9 As shown, it is composed of a lower first positioning hole 24e which is a substantially cylindrical hole, a lower first pin member 24f which is substantially circular in shape and is attached inside the lower first positioning hole 24e, and an adhesive joint portion 28B that adhesively joins the lower first positioning hole 24e and the lower first pin member 24f. Column The lower first positioning hole 24e has a lower first hole upper surface portion 24e1 with a substantially circular planar shape on its surface and an upper first hole side surface portion 24e2 with a substantially cylindrical shape on its side surface, as shown in FIG. 7. The lower first positioning hole 24e, as shown in FIG. 7, Bottom has a lower first hole upper surface portion 24e1 with a substantially circular planar shape on its surface and an upper first hole side surface portion 24e2 with a substantially cylindrical shape on its side surface. The lower first pin member 24f As shown in Figures 7 and 9, has a lower first upper surface portion 24f5 with a substantially circular planar shape on its upper surface, and from a substantially central portion of the lower first upper surface portion 24f5 Lower in a downward direction towards the lower first Upper is formed with a lower first engaging protrusion portion 24f2 that is substantially frustoconical in shape and is connected to the lower first upper surface portion 24f5, has a lower first side surface portion 24f3 with a substantially cylindrical shape on its side surface, and has a lower first lower surface portion 24f4 with a substantially circular planar shape on its lower surface. Shape The lower first pin member 24f

[0057] The lower first pin member 24f As shown in Figures 7 and 9, comprises a cylindrical lower first pin joint portion 24f1 that is adhesively joined to the lower first positioning hole 24e by the adhesive joint portion 28B, and a lower first engaging protrusion portion 24f2 that protrudes upward from the upper portion of the lower first pin joint portion 24f1. The lower first engaging protrusion portion 24f2 has a lower first upper surface portion 24f5 with a substantially circular planar shape on its upper surface. The lower first engaging protrusion portion 24f2 Pin joint part 24f1 is substantially frustoconical in shape and protrudes upward from a substantially central portion of the lower first The lower first engaging protrusion 24f2 has a lower first side portion 24f3 with a circular cross-section on the side surface and a lower first bottom surface portion 24f4 with a substantially circular bottom surface shape on the bottom surface.

[0058] The adhesive bonding portion 28A for adhesively bonding the upper first recessed member 24c to the upper first positioning hole 24b is formed up to a position that does not reach the upper first bottom surface portion 24c3 of the upper first recessed member 24c, as shown in FIG. 12. Also, the adhesive bonding portion 28A is formed up to a position that does not reach the outer peripheral portion 12ao of the peripheral wall of the upper bowl 12. Edge

[0059] In this embodiment, the upper first positioning portion 24a is formed on a columnar protrusion portion that protrudes downward from the upper outer bowl portion 50 (see FIGS. 3 and 5). Also, Lower first positioning part 24d is formed on a columnar protrusion portion that protrudes upward from the lower bowl portion. 70 Towards (see FIGS. 3 and 5).

[0060] As shown in FIG. 4, the washbowl 10 has a substantially cylindrical second positioning portion 26 formed inside the third upper outer bowl portion 56 of the upper bowl 12 and the third lower inner bowl portion 82 of the lower bowl 14, upward from the vicinity of the substantially central portion on the back side of the lower joint portion 14c. 82

[0061] The second positioning portion 26 As shown in FIG. 2, a lower second positioning portion 26d that protrudes in the front direction from the third lower inner bowl portion 82 of the portion near the substantially center of the lower joint portion 14c on the side of the third lower inner bowl portion 82, and having a substantially circular Column shape, and As shown in FIG. 4, an upper second positioning portion 26a that is formed inside the lower bowl 14 from the third upper outer bowl portion 56 so as to face the lower second positioning portion 26d, and having a substantially cylindrical shape, , Upper ​​​​ is constituted by

[0062] The upper second positioning portion 26a is shown in FIG. 8 and 10 As shown, the upper second positioning hole 26b which is a substantially cylindrical hole portion and the upper second concave member 26c which is attached inside the upper second positioning hole 26b and has a substantially reverse concave cross-sectional shape in the front view are constituted. Dent member is constituted by The upper second positioning hole 26b , Upper has an upper second hole upper surface portion 26b1 with a substantially circular planar shape on the surface, and an upper second hole side surface portion 26b2 with a substantially cylindrical shape on the side surface. The upper second concave member 26c has an upper second upper surface portion 26c1 with a substantially circular planar shape on the upper surface, an upper second side surface portion 26c2 with a substantially cylindrical shape on the side surface, an upper second lower surface portion 26c3 with a substantially circular planar shape on the upper surface, and from a substantially central portion of the upper second lower surface portion 26c3 upward, has a substantially frustum-shaped upper second engaging hole portion 26c4 which forms a hole portion continuous with the upper second lower surface portion 26c3 inside the upper second 26c. Dent member has a substantially frustum-shaped upper second engaging hole portion 26c4 which forms a hole portion continuous with the upper second lower surface portion 26c3 inside the upper second 26c.

[0063] The lower second positioning portion 26d is shown in FIG. 8 and Figure 10 As shown, the lower second positioning hole 26e which is a substantially cylindrical hole portion and the lower second pin member 26f which is attached inside the lower second positioning hole 26e and has a substantially cylindrical cross-sectional shape in the front view are constituted. The lower second positioning hole 26e, as shown in FIG. 8, Bottom has a lower second hole upper surface portion 26e1 with a substantially circular planar shape on the surface, and a lower second hole side surface portion 26e2 with a substantially cylindrical shape on the side surface. The lower second pin member 26f has an upper surface Of with a lower second upper surface portion 26f5 having a substantially circular planar shape, and from a substantially central portion of the lower second upper surface portion 26f5 Lower in a direction, so as to be continuous with the lower second upper surface portion 26f5 ShapeIt has a lower second engaging protrusion 26f2 that is substantially frustoconical in shape, a lower second side surface portion 26f3 that is substantially cylindrical on the side surface, and a lower second bottom surface portion 26f4 that is substantially circular in planar shape on the bottom surface.

[0064] The lower first pin member 24f As shown in Figures 7 and 10, includes a cylindrical lower first pin coupling portion 24f1 adhesively coupled to the lower first positioning hole 24e by an adhesive coupling portion 28B, and a lower first engaging protrusion 24f2 protruding from the upper portion of the lower first pin coupling portion 24f1. The lower first engaging protrusion 24f2 has, on its upper surface Of a lower first upper surface portion 24f5 that is substantially circular in planar shape. The lower first engaging protrusion 24f2 extends from a substantially central portion of the lower first upper surface portion 24f5 Lower toward Shape and is substantially frustoconical in shape. The lower first engaging protrusion 24f2 has a lower first side surface portion 24f3 that is circular in cross-section on the side surface, and a lower first bottom surface portion 24f4 that is substantially circular in bottom surface shape on the bottom surface.

[0065] The adhesive coupling portion 28A that adhesively couples the upper first recessed member 24c to the upper first positioning hole 24b is formed up to a position that does not reach the upper first bottom surface portion 24c3 of the upper first recessed member 24c, as shown in FIG. 9. Also, the adhesive coupling portion 28A As shown in Figure 13 is formed up to a position that does not reach the outer peripheral portion 12ao of the peripheral wall of the upper bowl 12. Edge

[0066] Upper first positioning part In this embodiment, 24a is formed on a cylindrical protrusion portion that protrudes downward from the upper outer bowl portion 50 (see FIGS. 3 and 5). Lower first positioning part Also, 70 24d is formed on a cylindrical protrusion portion that peels off and protrudes upward from the lower bowl portion 70 (see FIGS. 3 and 5).

[0067] The upper first positioning portion 24a is an attachment portion for attaching the upper bowl 12 to the lower bowl 14, and the lower first positioning portion 24d is an attachment portion for attaching the lower bowl 14 to the upper bowl 12, as shown in FIG. 5. 30 That is. The side surface portion of the upper first engaging hole portion 24c4 is in contact with the side surface portion of the lower first engaging protrusion portion 24f2. There is a gap between the upper end portion of the upper first engaging hole portion 24c4 and the upper end portion of the lower first engaging protrusion portion 24f2, and the upper first lower surface portion 24c3 Lower first pin joint part 24f1 is not in contact with the upper surface portion of. Therefore, the upper first positioning portion 24a can be separated from the lower first positioning portion 24d by simply moving it upward. The upper second positioning portion 26a is an attachment portion for attaching the upper bowl 12 to the lower bowl 14, and the lower second positioning portion 26d is an attachment portion for attaching the lower bowl 14 to the upper bowl 12, as shown in FIG. 5. 30 That is. The side surface portion of the upper second engaging hole portion 26c4 is in contact with the side surface portion of the lower second engaging protrusion portion 26f2. There is a gap between the upper end portion of the upper second engaging hole portion 26c4 and the upper end portion of the lower second engaging protrusion portion 26f2, and the upper second lower surface portion 26c3 Lower first pin joint part 26f1 is not in contact with the upper surface portion of. Therefore, the upper second positioning portion 26a can be separated from the lower second positioning portion 26d by simply moving it upward. As a result, the upper bowl 12 can be separated from the lower bowl 14 by simply moving it upward, as shown in FIG. 2.

[0068] In the washbowl 10 of the first embodiment, as shown in FIG. 1, the upper bowl 12 is disposed above the lower bowl 14. Therefore, as shown in FIG. 11, for the washbowl 10 of the first embodiment, since the user cannot visually recognize the drain plug 20 formed in the lower bowl 14, the aesthetic appearance can be maintained. Further, for the washbowl 10 of the first embodiment, as shown in FIG. 2, the upper bowl 12 can be separated from the lower bowl 14 only by moving it upward, so that the drain plug can be cleaned and maintained.

[0069] (Method of forming the positioning portion) Next, a method of forming the positioning portion by attaching the upper first recessed member to the upper first positioning hole and attaching the lower first pin member to the lower first positioning hole will be mainly described with reference to FIGS. 12 and 13.

[0070] First, with reference to FIG. 12, a method of attaching the upper first recessed member 24c to the upper first positioning hole 24b and attaching the lower first pin member 24f to the lower first positioning hole 24e will be described. After putting the upper first recessed member 24c into the upper first positioning hole 24b, inject the adhesive 28 into the gap inside the upper first positioning hole 24b to temporarily fix the upper first recessed member 24c inside the upper first positioning hole 24b. Next, after putting the lower first pin member 24f into the lower first positioning hole 24e, inject the adhesive 28 into the gap inside the lower first positioning hole 24e to temporarily fix the lower first pin member 24f inside the lower first positioning hole 24e. In the embodiment, the upper joint portion 12c formed along the outer peripheral edge of the peripheral wall portion 12a of the upper bowl 12 and the lower joint portion 14c formed along the outer peripheral wall of the lower bowl 14 are joined, and the upper bowl 12 is disposed on the upper side of the lower bowl 14. And the first engaging protrusion portion 2 4 f2 of the lower side of the first pin member 24f is inserted into the upper first recessed member 24c. Then, the upper bowl 12 is placed on the upper layer of the lower bowl 14, and the positions inside the upper first positioning holes 24b of the upper first recessed member 24c and inside the lower first positioning holes 24e of the lower first pin member 24f are adjusted. Then, while maintaining the state where the upper bowl 12 is placed on the upper layer of the lower bowl 14, the adhesive 28 injected into the upper first positioning hole 24b is cured to change it into the adhesive joint portion 28A, and the upper first recessed member 24c is fixedly attached inside the upper first positioning hole 24b, thereby attaching the upper first recessed member 24c to the upper first positioning hole 24b. , Also The adhesive 28 injected into the lower first positioning hole 24e is cured to change it into the adhesive joint portion 28A, and the lower first pin member 24f is fixedly attached inside the lower first positioning hole 24e, thereby attaching the lower first pin member 24f to the lower first positioning hole 24e. By this method, the upper first recessed member 24c is attached to the upper first positioning hole 24b. , Gap When the lower first pin member 24f is attached to the lower first positioning hole 24e, even if distortion occurs in the upper bowl 12 or the lower bowl 14 during the manufacturing stage of the washbowl 10, when the upper bowl 12 is attached to the lower bowl 14, the first peripheral wall portion 12a1 of the upper bowl 12 and the first lower outer bowl portion 92 of the lower bowl 14 can be made continuous. For this reason, by this method, the upper first recessed member 24c is attached to the upper first positioning hole 24b. , Gap When the lower first pin member 24f is attached to the lower first positioning hole 24e, even if the upper bowl 12 and / or the lower bowl 14 are formed of a material such as artificial marble that is prone to distortion, when the upper bowl 12 is attached to the lower bowl 14, the first peripheral wall portion 12a1 of the upper bowl 12 and the first lower outer bowl portion 92 of the lower bowl 14 can be made substantially continuous. The adhesive 28 is one used for adhering artificial marble, and preferably has a high viscosity and as long a set time as possible, which is the time until it cures.

[0071] Next, a method of forming the positioning portion by attaching the upper second recessed member to the upper second positioning hole and attaching the lower second pin member to the lower second positioning hole will be mainly described with reference to FIGS. 12 and 13.

[0072] First, with reference to FIG. 13, a method of attaching the upper second recessed member 26c to the upper second positioning hole 26b and attaching the lower second pin member 26f to the lower second positioning hole 26e will be described. After putting the upper second recessed member 26c into the upper second positioning hole 26b, an adhesive 28 is injected into the upper second positioning hole 26b to temporarily fix the upper second recessed member 26c in the gap inside the upper second positioning hole 26b. 2 Then, the lower second pin member 26f is put into the lower second positioning hole 26e, and the adhesive 28 is injected into the lower second positioning hole 26e to temporarily fix the lower second pin member 26f in the gap inside the lower second positioning hole 26e. In the embodiment, the upper joint portion 12c formed along the outer peripheral edge of the peripheral wall portion 12a of the upper bowl 12 and the lower joint portion 14c formed along the outer peripheral wall of the lower bowl 14 are joined, and the upper bowl 12 is disposed above the lower bowl 14. And the lower engaging protrusion portion 26f2 of the second pin member 2f is inserted into the second recessed member 2c of the upper side. And the 2 pin member 2 6 f's lower 2 engagement protrusion 26f2 of the 2 second recessed member 2 6 c of the upper side. Then, the upper bowl 12 is disposed on the upper layer of the lower bowl 14, and the positions inside the upper second positioning hole 26b of the upper second recessed member 26c and the positions inside the lower second positioning hole 26e of the lower second pin member 26f are adjusted. Then, while maintaining the state where the upper bowl 12 is disposed on the upper layer of the lower bowl 14, the adhesive 28 injected into the upper second positioning hole 26b is cured to be changed into the adhesive joint portion 28C, and the upper second recessed member 26c is fixedly installed inside the upper second positioning hole 26b, thereby attaching the upper second recessed member 26c to the upper second positioning hole 26b. , Also The adhesive 28 injected into the lower second positioning hole 26e is cured to be changed into the adhesive joint portion 28D, and the lower second pin member 26f is fixedly installed inside the lower second positioning hole 26e, thereby attaching the lower second pin member 26f to the lower second positioning hole 26e. By this method, the upper second recessed member 26c is attached to the upper second positioning hole 26b. , Gap When the lower second pin member 26f is attached to the lower second positioning hole 26e, even if distortion occurs in the upper bowl 12 or the lower bowl 14 at the manufacturing stage of the washbowl 10, when the upper bowl 12 is attached to the lower bowl 14, the third peripheral wall portion 12a3 of the upper bowl 12 and the third lower outer bowl portion 96 of the lower bowl 14 can be made continuous. For this reason, by this method, the upper second recessed member 26c is attached to the upper second positioning hole 26b. , Gap When the lower second pin member 26f is attached to the lower second positioning hole 26e, even if the upper bowl 12 and / or the lower bowl 14 are formed of a material prone to distortion such as artificial marble, when the upper bowl 12 is attached to the lower bowl 14, the third peripheral wall portion 12a3 of the upper bowl 12 and the third lower outer bowl portion 96 of the lower bowl 14 can be made substantially continuous.

[0073] By the above two methods, the upper first recessed member 24c is attached to the upper first positioning hole 24b and the lower first pin member 24f is attached to the lower first positioning hole 24e, the upper second recessed member 26c is attached to the upper second positioning hole 26b and the lower second pin member 26f is attached to the lower second positioning hole 26e. Then, Even if distortion occurs in the upper bowl 12 or the lower bowl 14 during the manufacturing stage of the washbowl 10, when the upper bowl 12 is attached to the lower bowl 14, not only can the first peripheral wall portion 12a1 of the upper bowl 12 and the first lower outer bowl portion 92 of the lower bowl 14 be made continuous and the third peripheral wall portion 12a3 of the upper bowl 12 and the third lower outer bowl portion 96 of the lower bowl 14 be made continuous, but also the second peripheral wall portion 12a2 of the upper bowl 12 and the second lower outer bowl portion 94 of the lower bowl 14 can be made continuous and the fourth peripheral wall portion 12a4 of the upper bowl 12 and the fourth lower outer bowl portion 98 of the lower bowl 14 can be made continuous. Therefore, by the above two methods, Attach the upper first recessed member 24c to the upper first positioning hole 24b and attach the lower first pin member 24f to the lower first positioning hole 24e, When the upper second recessed member 26c is attached to the upper second positioning hole 26b and the lower second pin member 26f is attached to the lower second positioning hole 26e, Even if the upper bowl 12 and / or the lower bowl 14 are formed of a material prone to distortion such as artificial marble, when the upper bowl 12 is attached to the lower bowl 14, not only can the first peripheral wall portion 12a1 of the upper bowl 12 and the first lower outer bowl portion 92 of the lower bowl 14 be made continuous and the third peripheral wall portion 12a3 of the upper bowl 12 and the third lower outer bowl portion 96 of the lower bowl 14 be made continuous, but also the second peripheral wall portion 12a2 of the upper bowl 12 and the second lower outer bowl portion 94 of the lower bowl 14 can be made continuous and the fourth peripheral wall portion 12a4 of the upper bowl 12 and the fourth lower outer bowl portion 98 of the lower bowl 14 can be made substantially continuous.

[0074] (Method of using the washbowl) The method of using the washbowl 10 of the first embodiment will be described. As shown in FIG. 16, the washbowl 10 of the first embodiment can be used by being installed on the counter CU, as shown in FIG. 17, by being installed so that a part thereof enters the inside of the counter CU, or as shown in FIG. 18, by being installed on the wall WA.

[0075] As shown in FIG. 16, when the washbowl 10 of the first embodiment is installed and used on the counter CU, the lower bottom surface portion 99b contacts the counter upper surface CS formed on the upper surface of the counter CU. The drain plug 20 of the lower bowl 14 is located inside the counter hole portion CH formed inside the counter CU downward from the counter opening CO formed on the counter upper surface CS. The drain pipe 300 is located below the drain plug 20 of the lower bowl 14 located inside the counter hole portion CH.

[0076] As shown in FIG. 17, when the washbowl 10 of the first embodiment is installed and used such that a part of it enters inside the counter CU, substantially the lower half of the lower bowl 14 is located inside the counter hole portion CH formed inside the counter CU downward from the counter opening CO. Therefore, the drain plug 20 of the lower bowl 14 is located inside the counter hole portion CH formed inside the counter CU downward from the counter opening CO formed on the counter upper surface CS. Also, the drain pipe 300 is located below the drain plug 20 of the lower bowl 14 located inside the counter hole portion CH. The drain pipe 300 is located inside the counter CU.

[0077] As shown in FIG. 18, when the washbowl 10 of the first embodiment is installed and used on the wall WA, a lower bowl hole portion 14H is formed horizontally from the third lower inner bowl portion 82 to the third lower outer bowl portion 96 of the lower bowl 14, and the plane side cross-sectional shape for installing the washbowl 10 on the wall WA is substantially circular. The bolt BO is inserted into the lower bowl hole portion 14H, and the portion of the bolt BO protruding from the lower bowl 14 is screwed into the wall screw hole portion WH formed on the side surface and formed inside the wall WA. The wall WA has a wall surface portion WS on the surface thereof, the front-side shape of which is a substantially planar shape. Horizontally from the wall surface portion WS toward the inside of the wall WA, there is a wall screw hole portion WH having a substantially circular planar-side cross-sectional shape for installing the washbowl 10 on the wall WA, and a screw groove is formed on the side surface thereof. If two or more lower bowl holes 14H and wall screw holes WH are provided inside the lower bowl 14, the washbowl 10 can be installed on the wall WA more firmly. Since the side cross-sectional shape of the third lower outer bowl portion 96 of the lower bowl 14 is a substantially arc shape and the front-side shape of the wall WA is the wall surface portion WS having a substantially planar shape, the third lower outer bowl portion 96 of the lower bowl 14 cannot be installed on the wall WA by attaching it to the wall surface portion WS of the wall WA. Therefore, an auxiliary member SP is interposed between the lower bowl 14 and the wall surface portion WS of the wall WA. The auxiliary member SP has a first auxiliary member surface portion SS1 on the surface facing the lower bowl 14, the side cross-sectional shape of which is a substantially arc shape, and a second auxiliary member surface portion SS2 on the surface opposite to the first auxiliary member surface portion SS1. Horizontally from the opening formed in the first auxiliary member surface portion SS1 toward the second auxiliary member surface portion SS2, there is an attachment auxiliary member hole portion SH having a substantially circular front-side shape for inserting a bolt BO. An opening having a substantially circular shape is formed at the end of the attachment auxiliary member hole portion SH on the side of the second auxiliary member surface portion SS2. The washbowl 10 of the first embodiment contacts the third lower outer bowl portion 96 of the lower bowl 14 and the first auxiliary member surface portion SS1 so that the lower bowl hole 14H and the attachment auxiliary member hole portion SH are continuous, and the attachment auxiliary member hole portion SH is interposed between the third lower outer bowl portion 96 of the lower bowl 14 and the wall WA so that the first auxiliary member surface portion SS1 and the wall surface portion WS of the wall WA are in contact with each other so that the attachment auxiliary member hole portion SH and the wall screw hole portion WH are continuous. Insert bolt BO into lower bowl hole 14H and attachment auxiliary member hole SH, and thread the portion of bolt BO protruding from attachment auxiliary member hole SH with wall screw hole WH, then install and use it on wall WA. In this way, drain plug 20 of lower bowl 14 is located inside counter hole CH formed inside counter CU downward from counter opening CO formed on upper surface CS of counter. Drain plug 20 of lower bowl 14 and drain pipe 300 are located at the lower part of lower bowl 14 when washbowl 10 of the first embodiment is installed and used on wall WA.

[0078] (Modification example) Washbowl 10 which is a modification example of the first embodiment will be mainly described with reference to FIG. 14. Washbowl 10 which is a modification example of the first embodiment is different from washbowl 10 of the first embodiment in that a drain strainer 200 having a substantially frustum - of - a - cone shape is fitted to prevent hair, dirt, etc. from flowing from drain plug 20 of lower bowl 14 into drain pipe 300. Therefore, for washbowl 10 which is a modification example of the first embodiment, descriptions other than drain strainer 200 will be omitted.

[0079] As shown in FIG. 14, washbowl 10 which is a modification example of the first embodiment has drain strainer 200 fitted to drain plug 20 formed on the bottom surface of lower bowl 14. Drain strainer 200 has an upper surface portion 202 of the drain strainer with a substantially circular planar shape on the upper surface, and a side surface portion 204 of the drain strainer with a substantially frustum - of - a - cone shape on the side surface. At the lower end of side surface portion 204 of the drain strainer, a lower drain opening 206 of the drain strainer with a substantially circular planar shape is formed, and a lower drain hole 208 of the drain strainer with a substantially cylindrical shape is formed upward inside drain strainer 200 from lower drain opening 206 of the drain strainer. On upper surface portion 202 of the drain strainer, at least six upper drain openings 210 of the drain strainer with a substantially circular planar shape are formed, and from upper drain openings 210 of the drain strainer... LowerAn upper drain hole 212 of a drain strainer, which is substantially cylindrical and faces downward toward a drain hole 208, is formed.

[0080] The drain strainer 200 is inserted from a lower drain opening 20A of the drain plug 20 into a lower drain hole 22 of the drain plug 20 such that a side surface portion 204 of the drain strainer 200 faces the lower drain hole 22 of the drain plug 20. When the side surface portion 204 of the drain strainer 200 is locked to the lower drain opening 20A of the drain plug 20, the drain strainer 200 is attached to the drain plug 20. When the drain strainer 200 is attached to the drain plug 20, water drained from an upper lower drain opening 19 of the upper bowl 12 and flowing into the lower inner bowl portion 72 flows from an upper drain opening 210 of the drain strainer into the upper drain hole 212 of the drain strainer. The water flowing into the upper drain hole 212 of the drain strainer flows from a lower drain opening 206 of the drain strainer into the lower drain hole 22 of the drain plug 20. The water flowing into the lower drain hole 22 of the drain plug 20 flows from a lower lower drain opening 23 into a drain pipe 300.

[0081] The drain strainer 200 is also called a hair catcher. When the drain strainer 200 is attached to the drain plug 20, it is possible to prevent hair and dirt from flowing from an upper drain opening 2 10 of the drain strainer into the upper drain hole 212 of the drain strainer. Therefore, it is possible to prevent hair and dirt from flowing from the upper drain opening 2 10 of the drain strainer into the drain pipe 300.

[0082] (Second Embodiment) The washbowl 10 of the second embodiment, which is a different embodiment from the washbowl 10 of the first embodiment, will be mainly described with reference to FIG. 15. In the washbowl 10 of the second embodiment, the upper bowl 12 has an overflow opening 220 formed therein for discharging water flowing into the other side of the weir portion beyond the top of the weir portion 60 to the lower bowl 14. This is different from the washbowl 10 of the first embodiment. 60 Therefore, for the washbowl 10 of the second embodiment, descriptions other than the upper bowl 12 will be omitted. ​

[0083] The upper bowl 12 is formed with a weir portion 60 that dams up water upward from the upper surface. The upper bowl 12 is formed with an overflow opening 220 that discharges water flowing into the other side of the weir portion 60 beyond the top of the weir portion 60 to the lower bowl 14. The overflow opening 220 is formed on the surface of the upper bowl 12.

[0084] The upper bowl 12 is shown in FIG. 1 5 As shown, at approximately the center of the upper inner bowl portion 46 of the upper portion 40 on the upper side Bowl an overflow opening 220 having a substantially oblong elliptical shape on the surface side is formed. Positive Positive The upper bowl 12 is connected to the overflow opening 220 in a horizontal direction from the overflow opening 220 toward the inside of the upper bowl 12 so as to be continuous with the overflow opening 220. An overflow hole 222 having a substantially oblong elliptical shape on the surface side is formed. Positive At the end on the back side of the overflow hole 222, there is an opening formed near the approximate center of the upper end of the third upper outer bowl portion 56 of the upper bowl 12 an overflow inner opening 224 having a substantially oblong elliptical shape on the surface side is formed. Since the overflow hole 222 and the overflow inner opening 224 are formed inside the upper bowl 12 from the overflow opening 220, they cannot be visually recognized by a person standing on the front side of the washbowl 10.

[0085] When water flows into the upper inner bowl portion 4 6 the water flows into the overflow hole 222 formed so as to be continuous with the overflow opening 220 in a horizontal direction from the overflow opening 220 toward the inside of the upper bowl 12. The water is discharged from the overflow inner opening 224, which is the end on the back side of the overflow hole 222 and has a substantially oblong elliptical shape on the back side and is an opening formed near the approximate center of the upper end of the third upper outer bowl portion 56 of the upper bowl 12, and flows into the lower bowl 14.

[0086] The upper bowl 12 has an upper drain plug 230 with a substantially circular planar shape formed at the central portion on the planar side of the upper inner bowl portion 4 6 of the upper bowl 12 for discharging the water flowing into the upper inner bowl portion 4 of the upper bowl 12 to the lower bowl 14. 6 The upper drain plug 230 has an upper drain port 232 with a substantially circular planar shape for discharging the water flowing into the upper inner bowl portion 4 of the upper bowl 12 to the lower bowl 14. The upper bowl 12 has an upper drain hole 234 formed in a substantially cylindrical shape so as to be continuously provided with the upper drain port 232 inside the upper bowl 12 in a vertically downward direction from the upper drain port 232 toward the upper outer bowl portion 50. 6 At the lower end of the upper drain hole 234, there is formed an upper lower drain port 236 which is an opening formed at the central portion on the planar side of the upper outer bowl portion 50 and has a substantially circular planar side shape. The water flowing into the upper inner bowl portion 4 of the upper bowl 12 flows into the upper drain hole 234 formed so as to be continuously provided with the upper drain port 232 of the upper drain plug 230 at the lower part of the upper drain port 232 of the upper drain plug 230, and is drained from the upper lower drain port 236 which is an opening formed at the central portion on the planar side of the upper inner bowl portion 4 at the lower end portion of the upper drain hole 234 and flows into the lower bowl 14. The upper bowl 12 includes a rubber plug 240 having a substantially inverted trapezoidal shape for closing the upper drain port 232 of the upper drain plug, a chain 260 having a substantially linear shape for connecting the upper bowl 12 and the rubber plug 240, and a ring member 270 having a substantially ring shape with a part thereof entering from the tray portion 15 of the upper bowl 12 into the upper bowl 12. The upper inner bowl portion 4 of the upper bowl 12 6 The water flowing into the upper inner bowl portion 4 of the upper bowl 12 flows into the upper drain hole 234 formed so as to be continuously provided with the upper drain port 232 of the upper drain plug 230 at the lower part of the upper drain port 232 of the upper drain plug 230, and is drained from the upper lower drain port 236 which is an opening formed at the central portion on the planar side of the upper inner bowl portion 4 at the lower end portion of the upper drain hole 234 and flows into the lower bowl 14. 6 The water flowing into the upper inner bowl portion 4 of the upper bowl 12 flows into the upper drain hole 234 formed so as to be continuously provided with the upper drain port 232 of the upper drain plug 230 at the lower part of the upper drain port 232 of the upper drain plug 230, and is drained from the upper lower drain port 236 which is an opening formed at the central portion on the planar side of the upper inner bowl portion 4 at the lower end portion of the upper drain hole 234 and flows into the lower bowl 14.

[0087] The upper bowl 12 has an upper drain plug 230 closing the upper drain port 232 of the upper drain plug, storing water in the upper inner bowl portion 4 of the upper bowl 12, a rubber plug 240 having a substantially inverted trapezoidal shape, a chain 260 having a substantially linear shape connecting the upper bowl 12 and the rubber plug 240, and a ring member 270 having a substantially ring shape with a part thereof entering from the tray portion 15 of the upper bowl 12 into the upper bowl 12. 6 The upper bowl 12 includes a rubber plug 240 having a substantially inverted trapezoidal shape for closing the upper drain port 232 of the upper drain plug, a chain 260 having a substantially linear shape for connecting the upper bowl 12 and the rubber plug 240, and a ring member 270 having a substantially ring shape with a part thereof entering from the tray portion 15 of the upper bowl 12 into the upper bowl 12. The rubber stopper 240 has a rubber stopper upper surface portion 242 with a substantially circular planar shape on the upper surface, a rubber stopper side surface portion 244 with a substantially inverted trapezoidal shape on the side surface, and a ring attachment portion 246 that protrudes upward from a substantially central portion on the planar side of the rubber stopper upper surface portion 242 so as to be continuously provided with the substantially central portion on the planar side of the rubber stopper upper surface portion 242. The ring attachment portion 246 has a substantially semi-concentric circular shape on the side surface side and has a rubber stopper ring 248 with a substantially ring shape, a part of which enters the inside of the ring attachment portion 246. The chain 260 has holes near both ends. The rubber stopper ring 248 enters the hole near one end, and the ring member 270 enters the hole near one end.

[0088] The rubber stopper 240 is attached to the upper drain plug 230 when the rubber stopper side surface portion 244 of the rubber stopper 240 abuts against the upper drain 234 of the upper drain plug 230 so that they face each other. Hole When the rubber stopper side surface portion 244 of the rubber stopper 240 is locked to the upper drain port 232 of the upper drain plug 230 230, the rubber stopper 240 is attached to the upper drain plug 230. When the rubber stopper 240 is attached to the upper drain plug 230, water is not drained from the upper drain plug of the upper bowl 12 to the lower bowl 14. Therefore, when water flows into the upper inner bowl portion 230 of the upper bowl 12, water can be stored inside the upper inner bowl portion 46 of the upper bowl 12. 46 When water can be stored inside the upper inner bowl portion of the upper bowl 12 by attaching the rubber stopper 240 to the upper drain plug 230 and allowing water to flow into the upper inner bowl portion 4 6 of the upper bowl 12, when the water exceeds the top of the weir portion 60 and flows to the other side of the weir portion 60 the water is discharged to the lower bowl 14.

[0089] As described above, the embodiments of the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, without departing from the technical idea and scope of the object of the present invention, various changes can be made to the embodiments described above with respect to the mechanism, shape, material, quantity, position, or arrangement, etc., and they are included in the present invention.

[0090] (Industrial Applicability) It is to make the drain plug less visible to the user, resulting in a washbasin with a good appearance.

Explanation of Reference Numerals

[0091] 10 Washbasin 12 Upper bowl 12a Peripheral wall portion 12a1 First peripheral wall portion 12a2 Second peripheral wall portion 12a3 Third peripheral wall portion 12a4 Fourth peripheral wall portion 12ai Inner peripheral edge portion of the peripheral wall 12ao Outer peripheral edge portion of the peripheral wall 12c Upper joint portion 14 Lower bowl 14a Peripheral wall portion 14c Lower joint portion 14H Lower bowl hole portion 15 Tray portion 15a Tray hole portion 16 Upper drain opening 18 Upper drain hole 19 Upper lower drain opening 20 Drain plug 20A Lower drain opening 22 Lower drain hole 23 Lower lower drain opening 24 First positioning portion 24a Upper first positioning portion 24b Upper first positioning hole 24b1 Upper first hole upper surface portion 24b2 Upper first hole side surface portion The first recessed member on the upper side of 24c The first upper surface portion of 24c1 The first side surface portion of 24c2 on the upper side The first lower surface portion of 24c3 on the upper side The first engaging hole portion of 24c4 on the upper side The first positioning portion on the lower side of 24d The first positioning hole on the lower side of 24e The first hole lower surface portion of 24e1 on the lower side The first hole side surface portion of 24e1 on the lower side The first pin member on the lower side of 24f The first pin coupling portion of 24f1 on the lower side The first engaging protrusion portion of 24f2 on the lower side The first side surface portion of 24f3 on the lower side The first lower surface portion of 24f4 on the lower side The first upper surface portion of 24f5 on the lower side The second positioning portion 26 The second upper positioning portion 26a The second upper positioning hole 26b The second upper hole upper surface portion of 26b1 The second upper hole side surface portion of 26b2 The second recessed member on the upper side of 26c The second upper surface portion of 26c1 The second side surface portion of 26c2 on the upper side The second lower surface portion of 26c3 on the upper side The second engaging hole portion of 26c4 on the upper side The second positioning portion on the lower side of 26d The second positioning hole on the lower side of 26e The second pin member on the lower side of 26f The first pin coupling portion of 26f1 on the lower side The second engaging protrusion portion of 26f2 on the lower side The second side surface portion of 26f3 on the lower side The second lower surface portion of 26f4 on the lower side The second upper surface portion of 26f5 on the lower side Adhesive 28 Adhesive bonding portion 28A Adhesive bonding portion 28B 28C Adhesive joint part 28D Adhesive joint part 30 Attachment part 40 Upper bowl part 42 Upper inner edge part 44 Upper outer edge part 46 Upper inner bowl part 50 Upper outer bowl part 52 First upper outer bowl part 54 Second upper outer bowl part 56 Third upper outer bowl part 58 Fourth upper outer bowl part 60 Weir part 62 Outer surface part of the weir part 63 Side edge part of the weir part 66R Right end part of the weir part 66L Left end part of the weir part 70 Lower bowl part 72 Lower inner bowl part 73 Lower inner edge part 74 First lower inner bowl part 76 Lower edge part of the first lower inner bowl part 78 Second lower inner bowl part 80 Lower edge part of the second lower inner bowl part 82 Third lower inner bowl part 84 Lower edge part of the third lower inner bowl part 86 Fourth lower inner bowl part 88 Lower edge part of the fourth lower inner bowl part 90 Lower outer bowl part 91 Lower edge part of the lower outer bowl part 92 First lower outer bowl part 94 Second lower outer bowl part 96 Third lower outer bowl part 98 Fourth lower outer bowl part 99 Lower central part 99a Lower flat part 99b Lower bottom part 180 Exhaust part 182R Right exhaust part 182L Left exhaust section 184R Upper right exhaust section 184L Upper left exhaust section 186R Lower right exhaust section 186L Lower left exhaust section 187R Right exhaust hole section 187L Left exhaust hole section 188R Right exhaust surface section 188L Left exhaust surface section 189R Right exhaust port section 189L Left exhaust port section 64R Upper right exhaust hole section 64L Upper left exhaust hole section 65R Upper right exhaust surface section 65L Upper left exhaust surface section 67RО Upper right exhaust port 67LО Upper left exhaust port 160 Lower right exhaust hole section 162 Right internal exhaust port 164 Lower right exhaust surface section 166 Lower right exhaust port 170 Lower left exhaust hole section 172 Left internal exhaust port 174 Lower left exhaust surface section 176 Lower left exhaust port 100 First right water stop wall 102 Upper edge of the first right water stop wall 110 First left water stop wall 112 Upper edge of the first left water stop wall 120 Lower right protruding part 126 Lower right upper surface section 130 Lower left protruding part 136 Lower left upper surface section 140 Second right water stop wall 150 Second left water stop wall 200 Drainage strainer Upper surface part of the 202 drain tray Side surface part of the 204 drain tray Lower drain opening of the 206 drain tray Lower drain hole of the 208 drain tray Upper drain opening of the 210 drain tray Upper drain hole of the 212 drain tray Overflow opening 220 Overflow hole 222 Inner overflow opening 224 Upper drain plug 230 Upper drain opening 232 Upper drain hole 234 Upper lower drain opening 236 Rubber plug 240 Upper surface part of the rubber plug 242 Side surface part of the rubber plug 244 Ring attachment part 246 Rubber plug ring 248 Chain 260 Ring member 270 Drain pipe 300 CU counter Upper surface part of the CS counter Counter opening CO Counter hole part CH Wall WA Wall surface part WS Wall screw hole part WH Bolt BO Mounting auxiliary member SP Surface part of the first auxiliary member SS1 Surface part of the second auxiliary member SS2 Mounting auxiliary member hole part SH

Claims

1. A lower bowl having a drain plug formed on the bottom surface for draining the inflowing water from the drain plug, An upper bowl disposed above the lower bowl and having an upper drain opening formed on the bottom surface for draining the inflowing water from the upper drain opening toward the lower bowl, comprising: The upper bowl and the lower bowl are provided with a first positioning portion and a second positioning portion for aligning the positions of the upper bowl and the lower bowl. The upper bowl and the lower bowl are characterized in that they are connected and integrated by the first positioning portion and the second positioning portion built inside the upper bowl and the lower bowl. A washbowl.

2. The upper bowl and the lower bowl are provided with an attachment portion for aligning the upper bowl and the lower bowl. The washbowl according to claim 1, wherein the upper bowl and the lower bowl are detachably arranged on the upper layer of the lower bowl by the attachment portion.

3. The first positioning portion and the second positioning portion are composed of an upper positioning portion built in the upper bowl and a lower positioning portion built in the lower bowl. The upper positioning portion is formed by connecting an upper positioning hole and an upper positioning member by an adhesive joint portion. The washbowl according to claim 1, wherein the lower positioning portion is formed by connecting a lower positioning hole and a lower positioning member by an adhesive joint portion.

4. The positioning member is composed of a pin member built in the lower bowl and a recessed member built in the upper bowl. The washbowl according to claim 3, wherein the pin member and the recessed member are connected by engaging with each other.

5. The lower end of the upper positioning portion and the upper end of the lower positioning portion are in contact with each other so as to be separable. The lower end of the upper positioning portion and the upper end of the lower positioning portion are not in contact with each other. The washbowl according to claim 3, characterized in that.

6. The pin member and the recessed member are engaged so as to be separable. The washbowl according to claim 4, characterized in that.

7. When the upper bowl is moved upward, it is separable from the lower bowl. The washbowl according to claim 6, characterized in that.

8. A drain strainer is fitted into the drain plug formed on the bottom surface of the lower bowl. The washbowl according to any one of claims 1 to 7, characterized in that.

9. The upper bowl is formed with a weir portion for blocking water upward from the upper surface, The upper bowl is formed with an overflow opening for discharging water flowing into the other side of the weir portion beyond the top of the weir portion to the lower bowl. The washbowl according to any one of claims 1 to 8, characterized in that.

10. Inside the upper bowl and the lower bowl, when the upper bowl is disposed in the upper layer of the lower bowl, an exhaust portion for exhausting the air contained between the upper bowl and the lower bowl to a region to the right of the right side surface of the washbowl and a region to the left of the left side surface of the washbowl is provided. The washbowl according to any one of claims 1 to 9, characterized in that.

11. The exhaust portion is A right exhaust portion for exhausting the air contained between the upper bowl and the lower bowl to a region to the right of the right side surface of the washbowl, and A left exhaust portion for exhausting the air contained between the upper bowl and the lower bowl to a region to the left of the left side surface of the washbowl, The washbowl according to claim 10, characterized in that it comprises.

12. A method for manufacturing a washbowl configured to be connected by a first positioning portion and / or a second positioning portion having an upper positioning hole and a lower positioning hole built inside an upper bowl and a lower bowl, which is a method of attaching a positioning member to an upper positioning hole of an upper bowl and attaching a positioning member to a lower positioning hole of a lower bowl to connect the upper bowl and the lower bowl, a step of inserting the positioning member into the upper positioning hole, then injecting an adhesive into the upper positioning hole to temporarily fix the positioning member in the upper positioning hole; a step of inserting the positioning member into the lower positioning hole, then injecting the adhesive into the lower positioning hole to temporarily fix the positioning member in the lower positioning hole; a step of placing the upper bowl on the lower bowl and adjusting the position of the positioning member inside the upper positioning hole into which the adhesive has been injected, and adjusting the position of the positioning member inside the lower positioning hole into which the adhesive has been injected; a step of maintaining the state in which the upper bowl is placed on the lower bowl, curing the adhesive injected into the upper positioning hole to change it into an adhesive joint portion, thereby permanently fixing the positioning member in the upper positioning hole, and curing the adhesive injected into the lower positioning hole to change it into an adhesive joint portion, thereby permanently fixing the positioning member in the lower positioning hole; A method for manufacturing a washbowl, characterized by comprising the above steps.

13. A part of the positioning member is a recessed member, A part of the positioning member is a pin member, The method for manufacturing a washbowl according to Claim 12, wherein the protrusion of the pin member is configured to fit into the recess of the recessed member.

Images