Water closet

Abstract

To provide a water closet with a good appearance of the border between different decorations.SOLUTION: A water closet T1 includes a first rim part 22K, which is a part of a rim portion 22A provided on the upper end edge of a toilet bowl portion 22, and a second rim part 22 L adjacent to the first rim part 22K at a boundary 50 as part of the rim portion 22A, and decorated differently from the first rim part 22K.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to flush toilets. [Background technology]

[0002] Patent Document 1 discloses a technique for applying a matte yet easy-to-clean decoration to a toilet bowl. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-46364 Summary of the Invention [Problem to be solved by the invention]

[0004] Matte surfaces are harder to clean than glossy surfaces. Therefore, even if a toilet bowl is decorated with a matte finish that is easy to clean, its appearance (the appearance of the matte surface) may give users the impression that the toilet bowl is difficult to clean. Therefore, by applying a glossy finish to the toilet bowl, which is easily soiled, and a matte finish to areas other than the toilet bowl that are relatively difficult to soil, it is possible to avoid giving users the impression that the toilet bowl is difficult to clean while still maintaining a good appearance. In such cases, it is preferable to make the boundary between the matte and glossy finishes look good.

[0005] The present disclosure was completed based on the above circumstances, and aims to provide a flush toilet in which the boundaries between different decorations look good. [Means for solving the problem]

[0006] The flush toilet of the present disclosure comprises a toilet bowl with a rim portion attached to the upper edge, and the rim portion has a continuous inner surface, inner curved surface, upper surface, outer curved surface, and outer surface, and is decorated differently at each end of a boundary portion provided between the inner surface of the rim portion and the outer curved surface of the rim portion. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a side view of a flush toilet according to a first embodiment. [Figure 2] FIG. 1 is a plan view of a flush toilet according to a first embodiment. [Figure 3] FIG. 1 is a plan view of a flush toilet according to a first embodiment, with the toilet seat in a reclined position and the toilet lid in an upright position. [Figure 4] 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 5] FIG. 5 is an enlarged cross-sectional view of the main part of the rear part of the toilet in FIG. 4. [Figure 6] 3 is a cross-sectional view of FIG. 2 taken along line B-B. [Figure 7] FIG. 7 is a partially enlarged cross-sectional view showing an enlarged rim portion in FIG. 6. [Figure 8] FIG. 3 is a partially enlarged cross-sectional view of a flush toilet according to a second embodiment, taken at a position corresponding to cross section BB in FIG. 2, and showing an enlarged view of the rim portion. [Figure 9] FIG. 3 is a partially enlarged cross-sectional view of a flush toilet according to a third embodiment, taken at a position corresponding to cross section BB in FIG. 2, and showing an enlarged view of the rim portion. [Figure 10] FIG. 10 is a schematic cross-sectional view of a boundary portion in another embodiment. [Figure 11] 10 is a schematic cross-sectional view of a boundary portion in another embodiment, showing a state in which the thickness of the glaze at the boundary portion is greater than the thickness of the glaze at the first rim portion and the second rim portion. DETAILED DESCRIPTION OF THE INVENTION

[0008] The flush toilet of the present disclosure comprises: [1] A first rim portion that is a part of a rim portion provided on the upper edge of the toilet bowl; A second rim portion, as a part of the rim portion, adjacent to the first rim portion at a boundary portion and decorated differently from the first rim portion; Equipped with.

[0009] [2] In the flush toilet described in [1] above, the rim portion has an inner surface, an inner curved surface, an upper surface, an outer curved surface, and an outer surface that are continuous, The boundary portion is provided between the inner surface and the outer curved surface.

[0010] [3] In the flush toilet of [2] above, the rim portion rises continuously from the lower end of the inner surface to the upper end of the inner curved surface.

[0011] [4] In any of the flush toilets [2] to [3] above, the inner surface is inclined inward.

[0012] [5] In any of the flush toilets [2] to [4] above, the boundary portion is located on the outer curved surface.

[0013] [6] In any of the flush toilets [2] to [4] above, the boundary portion is located between the inner surface and the inner curved surface.

[0014] [7] In the flush toilet of [2] above, the rim portion has the inner curved surface positioned inward from the inner surface, and has an intermediate surface facing downward between the inner surface and the inner curved surface, The boundary portion is located at the intermediate plane.

[0015] [8] Any of the flush toilets [2] to [7] above is provided with a toilet lid that covers the rim portion, and the outer curved surface is located inside the outer periphery of the toilet lid.

[0016] [9] In any of the flush toilets [1] to [8] above, the boundary portion gradually changes from the decoration of the first rim portion to the decoration of the second rim portion.

[0017] <Embodiment 1> A first embodiment of the present disclosure will be described below with reference to Figures 1 to 7. In the following description, the left side in Figure 1 is defined as the front, and the right side as the rear. The up and down directions are defined as the directions that appear in Figure 1, as up and down. The left and right directions are defined as the far side in Figure 1 as the left, and the near side as the right.

[0018] As shown in Figure 1, the flush toilet T1 in embodiment 1 comprises a toilet bowl 20 and a functional section 30. As shown in Figure 4, the toilet bowl 20 has a toilet bowl section 22, a toilet drain section 23, and an outer peripheral wall section 24. The toilet bowl 20 is made of ceramic. The toilet bowl section 22, the toilet drain section 23, and the outer peripheral wall section 24 are formed as a single unit.

[0019] As shown in Figure 6, the toilet bowl 22 has a rim 22A, a shelf 22B, and a recess 22C. The rim 22A is strip-shaped and is provided on the upper edge of the toilet bowl 22. A water outlet 22D is formed and opens in the center of the left-hand rim 22A in the front-to-rear direction (see Figure 4). The water outlet 22D spouts flush water supplied from a water conduit (not shown) into the toilet bowl 22. The water outlet 22D spouts flush water forward.

[0020] As shown in FIG. 7, the rim portion 22A has an inner surface 22E, an inner curved surface 22F, an upper surface 22G, an outer curved surface 22H, and an outer surface 22J. The inner surface 22E, the inner curved surface 22F, the upper surface 22G, the outer curved surface 22H, and the outer surface 22J are continuous. Specifically, the inner surface 22E is continuous with the shelf portion 22B and rises upward. The inner curved surface 22F is continuous with the upper end of the inner surface 22E. The lower end of the inner curved surface 22F slopes generally along the vertical direction. The inner curved surface 22F curves outward, gradually decreasing in slope toward the upper end. The upper end of the inner curved surface 22F slopes generally along the horizontal direction. In other words, the inner surface 22E rises continuously from the lower end to the upper end of the inner curved surface 22F.

[0021] The upper surface 22G is continuous with the upper end of the inner curved surface 22F and expands outward. The outer curved surface 22H is continuous with the outer peripheral edge of the upper surface 22G. The upper end of the outer curved surface 22H slopes generally along the left-right direction, and the slope gradually increases toward the lower end. The lower end of the outer curved surface 22H slopes generally along the up-down direction. The outer surface 22J hangs down from the lower end of the outer curved surface 22H. The lower end of the outer surface 22J is continuous with the upper end of the outer peripheral wall portion 24.

[0022] The rim portion 22A further has a first rim portion 22K and a second rim portion 22L. The surface of the first rim portion 22K forms the inner surface 22E, inner curved surface 22F, upper surface 22G, and upper portion of the outer curved surface 22H of the rim portion 22A. The surface of the second rim portion 22L forms the outer surface 22J of the rim portion 22A and the lower portion of the outer curved surface 22H. The first rim portion 22K and the second rim portion 22L form part of the rim portion 22A. The second rim portion 22L is adjacent to the first rim portion 22K.

[0023] Shelf portion 22B is continuous with the lower end of inner surface 22E of rim portion 22A and extends toward the center of toilet bowl 22. Recess 22C is formed so that its upper end is continuous with the inner peripheral edge of shelf portion 22B and is recessed downward. The downstream end of recess 22C is continuous with toilet drain portion 23, which will be described later (see Figure 4). The surfaces of shelf portion 22B and recess 22C form waste receiving surfaces that receive waste.

[0024] As shown in FIG. 4, the toilet drain 23 has an ascending flow path 23B and a descending flow path 23C. The ascending flow path 23B is continuous with the downstream end of the recess 22C of the toilet bowl 22 and extends diagonally upward and rearward. The descending flow path 23C is continuous with the downstream end of the ascending flow path 23B and hangs down in a generally vertical direction. The downstream end of the descending flow path 23C opens vertically downward. A drain socket 21 is connected to the downstream end of the descending flow path 23C. The drain socket 21 is cylindrical. The upstream side of the drain socket 21 is connected to the downstream end of the descending flow path 23C and extends downward. The downstream side of the drain socket 21 extends rearward. The downstream end of the drain socket 21 can be connected to, for example, a drain pipe provided on a wall. The drain pipe is not shown.

[0025] The outer peripheral wall portion 24 has a front wall 24A and left and right walls 24B. The front wall 24A and the left and right walls 24B are inclined downward and inward (see Figures 4 and 6). The lower end of the outer peripheral wall portion 24 contacts the installation surface 10. The left and right walls 24B extend in the up-down and front-to-back directions. A pair of covers 25 are attached to the rear of each of the left and right walls 24B so as to cover the toilet drain portion 23 from the left and right (see Figure 1). The covers 25 are made of synthetic resin.

[0026] As shown in FIG. 4, the functional unit 30 comprises a functional unit main body 31 placed on the rear of the toilet bowl 20, a toilet seat 32 positioned above the rim portion 22A, and a toilet lid 33 that covers the rim portion 22A. The functional unit main body 31 pivotally supports the toilet seat 32 and toilet lid 33 so that they can rotate freely between an upright position and a reclined position. The functional unit main body 31 houses a private parts cleansing device (not shown). When the toilet seat 32 and toilet lid 33 are reclined, they are located above the toilet bowl 22. The left-right dimension of the toilet seat 32 is smaller than the left-right dimension of the toilet bowl 20 (see FIG. 3). In a plan view from above, the rim portion 22A extends outward in the left-right direction from both the left and right sides of the toilet seat 32 in the reclined position (see FIG. 3). When viewed from above, the front end of the rim portion 22A is hidden by the toilet seat 32 (see FIG. 3). In a plan view from above, rim portion 22A is hidden by toilet lid 33 in a laid-down position (see Figure 2). The outer peripheral edge of toilet lid 33 is located outside rim portion 22A (see Figures 4 and 6). In other words, outer curved surface 22H is located inside the outer periphery of toilet lid 33.

[0027] The toilet 20 configured in this manner is decorated with two different designs. Specifically, as shown in Figure 7, the surfaces of the shelf 22B, recess 22C, and first rim 22K (the inner surface 22E of rim 22A, the inner curved surface 22F, the top surface 22G, and the upper part of the outer curved surface 22H) are coated with glaze B (hereinafter also referred to as bright glaze B), which gives a smooth and glossy surface after firing. The surface of the outer peripheral wall 24 and the surface of the second rim 22L (the outer surface 22J of rim 22A and the lower part of the outer curved surface 22H) are coated with glaze M (hereinafter also referred to as matte glaze M), which gives a matte surface after firing. In other words, the second rim 22L is decorated differently from the first rim 22K.

[0028] A boundary 50 where bright glaze B and matte glaze M are applied is located on the outer curved surface 22H. At the boundary 50, bright glaze B and matte glaze M are adjacent to each other and do not overlap. Light irradiated onto the surface of the outer curved surface 22H coated with matte glaze M is reflected in different directions depending on the position on the curved surface and is easily diffused. For this reason, it is difficult to distinguish whether the surface of the outer curved surface 22H coated with matte glaze M is glossy or matte. By locating the boundary 50 on the outer curved surface 22H in this way, it is possible to make it difficult to distinguish the difference in texture between the surfaces coated with bright glaze B and matte glaze M.

[0029] The entire upper surface 22G of the toilet bowl 20 is coated with bright glaze B. The rear surface of the toilet bowl 20 is coated with matte glaze M, as shown in Figure 5. At the rear of the toilet bowl 20, the boundary 50 is located on the curved surface formed between the rear surface of the toilet bowl 20 and the upper surface 22G of the toilet bowl 20.

[0030] The cover 25 is also decorated with two different designs. Specifically, the front side of the cover 25 (the side adjacent to and connected to the outer wall portion 24) is coated with paint of the same color tone as the matte glaze M. When this paint dries, the painted surface will have the same degree of matte finish as the fired matte glaze M. The back side of the cover 25 (the side facing the toilet drain portion 23) is coated with paint of the same color tone as the bright glaze B. When this paint dries, the painted surface will have the same degree of gloss as the fired bright glaze B. The painted surfaces of the cover 25 with different designs are adjacent to each other at the curved surface formed on the outer periphery of the back side. In other words, the boundary of the cover 25 is located on the curved surface formed on the outer periphery of the back side.

[0031] The operation and effects of the first embodiment configured as above will be described.

[0032] Flush toilet T1 comprises a first rim portion 22K, which is part of rim portion 22A provided on the upper edge of toilet bowl 22, and a second rim portion 22L, which is part of rim portion 22A and adjacent to first rim portion 22K at boundary portion 50, and is decorated differently from first rim portion 22K. This configuration allows different decorations to be applied to toilet bowl 22, increasing the variety of appearances.

[0033] The rim portion 22A of the flush toilet T1 has a continuous inner surface 22E, inner curved surface 22F, top surface 22G, outer curved surface 22H, and outer surface 22J, with boundary portion 50 located on outer curved surface 22H. With this configuration, it is possible to apply stain-resistant decoration to areas that are relatively prone to soiling, and to apply aesthetically pleasing decoration to areas that are relatively resistant to soiling. In other words, each part can be optimally decorated.

[0034] The rim portion 22A of the flush toilet T1 rises continuously from the bottom end of the inner surface 22E to the top end of the inner curved surface 22F. This configuration makes it easier to clean the inner surface 22E of the rim portion 22A.

[0035] The boundary 50 of the flush toilet T1 is located on the outer curved surface 22H. With this configuration, the top surface 22G of the rim 22A, which is relatively prone to getting dirty, can be decorated with the same decoration as the shelf 22B and recess 22C. For this reason, for example, the shelf 22B, recess 22C, and top surface 22G of the rim 22A can be decorated with a stain-resistant decoration (such as bright glaze B) to make them less susceptible to getting dirty.

[0036] Flush toilet T1 is equipped with a toilet lid 33 that covers the rim portion 22A, and outer curved surface 22H is located inside the outer periphery of the toilet lid 33. With this configuration, the toilet lid 33 can hide the boundary portion 50 when viewed in plan from above, making the boundary portion 50 less noticeable and improving the appearance.

[0037] <Embodiment 2> Next, a flush toilet T2 according to a second embodiment of the present disclosure will be described with reference to Figure 8. The flush toilet T2 of the second embodiment differs from the first embodiment in that the inner surface 122E of the rim portion 122A of the toilet bowl 120 is angled inward, and in the respective dimensions of the first rim portion 122K and second rim portion 122L. Components that are the same as those in the first embodiment are given the same reference numerals, and explanations of the structure, operation, and effects will be omitted.

[0038] As shown in Figure 8, inner surface 122E of rim portion 122A of toilet bowl 120 is continuous with shelf portion 122B and extends linearly and slopes inward toward the center of toilet bowl 120 as it approaches the upper end. In other words, inner surface 122E of rim portion 122A slopes inward (overhangs). The dimension by which inner surface 122E overhangs inward is smaller than the left-right width of spout 122D.

[0039] The first rim portion 122K is the portion where the inner surface 122E of the rim portion 122A and the lower part of the inner curved surface 122F are formed. The second rim portion 122L is the portion where the outer surface 122J, outer curved surface 122H, upper surface 122G, and upper part of the inner curved surface 122F of the rim portion 122A are formed. The first rim portion 122K and the second rim portion 122L form part of the rim portion 122A. The second rim portion 122L is adjacent to the first rim portion 122K.

[0040] The toilet 120 configured in this manner is decorated with two different designs. Specifically, a bright glaze B is applied to the surface of the shelf 122B, the surface of the recess 122C, and the surface of the first rim 122K (the inner surface 122E of the rim 122A and the lower part of the inner curved surface 122F). A matte glaze M is applied to the surface of the outer wall 124 and the surface of the second rim 122L (the outer surface 122J, outer curved surface 122H, upper surface 122G, and upper part of the inner curved surface 122F of the rim 122A). In other words, the second rim 122L is decorated differently from the first rim 122K.

[0041] A boundary 150, where bright glaze B and matte glaze M are applied, is located on the inner curved surface 122F. At the boundary 150, bright glaze B and matte glaze M are applied adjacent to each other without overlapping. Light irradiated onto the surface of the inner curved surface 122F coated with matte glaze M is reflected in different directions depending on the position on the curved surface and is easily diffused. For this reason, it is difficult to distinguish whether the surface of the inner curved surface 122F coated with matte glaze M is glossy or matte. By arranging the boundary 150 on the inner curved surface 122F in this way, it is possible to make it difficult to distinguish the difference in texture between the surfaces coated with bright glaze B and matte glaze M.

[0042] The inner surface 122E of the flush toilet T2 is inclined inward. With this configuration, flush water flowing inside the toilet bowl 122 is less likely to splash out.

[0043] Boundary 150 of flush toilet T2 is located on inner curved surface 122F. With this configuration, stain-resistant decoration (bright glaze B) can be applied to rim 122A, which is prone to getting dirty, and to shelf 122B and recess 122C, which are located below rim 122A, while aesthetically pleasing decoration (matt glaze M) can be applied to other parts.

[0044] <Embodiment 3> Next, a flush toilet T3 according to a third embodiment of the present disclosure will be described with reference to Figure 9. The flush toilet T3 of this embodiment differs from embodiments 1 and 2 in that it has a downward-facing intermediate surface 222K between the inner surface 222E and the inner curved surface 222F of the rim portion 222A, and in the respective dimensions of the first rim portion 222M and second rim portion 222N. Components that are the same as those in embodiments 1 and 2 are given the same reference numerals, and explanations of the structure, functions, and effects will be omitted.

[0045] As shown in FIG. 9, the rim portion 222A has an inner surface 222E, a middle surface 222K, an upper inner surface 222L, an inner curved surface 222F, an upper surface 222G, an outer curved surface 222H, and an outer surface 222J. The inner surface 222E is continuous with the shelf portion 222B and rises upward. The middle surface 222K is continuous with the upper end of the inner surface 222E and extends laterally toward the center of the toilet bowl 220. The middle surface 222K faces downward. The upper inner surface 222L is continuous with the inner circumferential edge of the middle surface 222K and rises upward. The inner curved surface 222F is continuous with the upper end of the upper inner surface 222L. The slope of the lower end of the inner curved surface 222F is roughly the same as the slope of the upper inner surface 222L. The inner curved surface 222F curves outward, gradually decreasing in slope toward the upper end. Inner curved surface 222F of rim portion 222A is located more inward than inner surface 222E of rim portion 222A. Intermediate surface 222K is provided between inner surface 222E of rim portion 222A and inner curved surface 222F of rim portion 222A.

[0046] The first rim portion 222M is the portion where the inner surface 222E of the rim portion 222A and the outer peripheral side of the intermediate surface 222K are formed. The second rim portion 222N is the portion where the outer surface 222J, outer curved surface 222H, upper surface 222G, inner curved surface 222F, upper inner surface 222L, and inner peripheral side of the intermediate surface 222K of the rim portion 222A are formed. The first rim portion 222M and the second rim portion 222N form part of the rim portion 222A. The second rim portion 222N is adjacent to the first rim portion 222M.

[0047] The toilet 220 configured in this manner is decorated with two different designs. Specifically, bright glaze B is applied to the surfaces of the shelf 222B, the recess 222C, and the first rim 222M (the inner surface 222E of the rim 222A and the outer periphery of the intermediate surface 222K). Matte glaze M is applied to the surface of the outer wall 224 and the surface of the second rim 222N (the outer surface 222J, outer curved surface 222H, top surface 222G, inner curved surface 222F, upper inner surface 222L, and the inner periphery of the intermediate surface 222K of the rim 222A). In other words, the second rim 222N is decorated differently from the first rim 222M.

[0048] A boundary portion 250, where bright glaze B and matte glaze M are applied, is located on the intermediate surface 222K. The boundary portion 250 is disposed between the inner surface 222E and the inner curved surface 222F. In the boundary portion 250, the bright glaze B and the matte glaze M are applied adjacent to each other without overlapping. By disposing the boundary portion 250 on the intermediate surface 222K, the boundary portion 250 can be made less visible to the user.

[0049] The rim portion 222A of the flush toilet T3 has an inner curved surface 222F positioned inward of the inner surface 222E, and has a downward-facing intermediate surface 222K between the inner surface 222E and the inner curved surface 222F. The boundary portion 250 is located at the intermediate surface 222K. This configuration makes it difficult for the user to see the boundary portion 250.

[0050] <Other embodiments> The present disclosure is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments, for example, are also included within the technical scope of the present disclosure. (1) In the boundary areas of Embodiments 1 to 3, the bright glaze and matte glaze are applied so as not to overlap each other. However, as shown in FIG. 10 , the decoration of the first rim portion 322K may gradually change to that of the second rim portion 322L at the boundary area 350. Specifically, the glaze G1 is applied to the surface of the first rim portion 322K. A glaze G2, which is different from the glaze G1, is applied to the surface of the second rim portion 322L. At the boundary area 350, the glaze G1 is applied so that its thickness gradually decreases from the first rim portion 322K to the second rim portion 322L. At the boundary area 350, the glaze G2 is applied so that it covers the glaze G1. At the boundary area 350, the glaze G2 is applied so that its thickness gradually increases from the first rim portion 322K to the second rim portion 322L. This configuration makes it possible to blur the boundary between one glaze G1 and the other glaze G2 at boundary 350, making it easier to improve the appearance of boundary 350. Furthermore, as shown in Figure 11, the thickness of the glaze at the portion where glazes G1 and G2 are applied in overlapping fashion (boundary 450) may be thicker than the thickness of the glaze at the portions where glazes G1 and G2 are not applied in overlapping fashion (first rim portion 422K, second rim portion 422L). The thickness of glaze G2 at boundary 450 may be thinner than the thickness of glaze G1. (2) In the first to third embodiments, examples are given in which the different decorations are decorated with only two different types of glazes, a bright glaze and a matte glaze. However, the present invention is not limited to this, and glazes of two different colors or two different brightnesses may also be used. Furthermore, one decoration and the other decoration may have different patterns, and one decoration may be subjected to a surface treatment such as water blasting. (3) In embodiment 1, the boundary is located on the outer curved surface, in embodiment 2 the boundary is located on the inner curved surface, and in embodiment 3 the boundary is located on the intermediate surface. However, the boundary is not limited to this, and may be located between the inner surface of the rim and the outer curved surface of the rim. (4) When the inner surface is inclined inward, the boundary may be located between the inner surface and the inner curved surface. In this case, since the inner surface is inclined inward, the boundary is less noticeable. (5) In embodiment 2, the inner surface of the rim extends linearly and slopes inward toward the upper end. However, the inner surface of the rim may be curved outward and sloped toward the upper end. (6) In the first embodiment, the upper surface of the rim is coated with the same bright glaze as the inner surfaces of the shelf, recess, and rim. However, the upper surface of the rim may be coated with a glaze that, after firing, exhibits a matte finish more matte than the bright glaze and a glossier finish than the matte glaze. In other words, three different types of decorations may be applied. In this case, a border is disposed on each of the inner and outer curved surfaces of the rim. (7) The back side of the cover is not visible when attached to the toilet bowl, so there is no need to paint the back side of the cover. [Explanation of symbols]

[0051] T1,T2,T3...Wash toilet, 22,122,222...Toilet bowl part, 22A,122A,222A...Rim part, 22E,122E,222E...Inner surface, 22F,122F,222F...Inner curved surface, 22G,122G,222G...Top surface, 22H,122H,222 H...Outer curved surface, 22J,122J,222J...Outer surface, 22K,122K,222M,322K,422K...First rim part, 22L,122L,222N,322L,422L...Second rim part, 33...Toilet lid, 50,150,250...Boundary part, 222K...Intermediate surface

Claims

1. a first part that is a part of the toilet bowl; a second part adjacent to the first part at a boundary and decorated differently from the first part; Equipped with The boundary portion is provided on the curved surface of the toilet bowl.

2. A toilet lid is provided to cover the toilet bowl, The flush toilet according to claim 1, wherein the curved surface is located inside the outer periphery of the toilet lid.

3. Equipped with a toilet seat, The flush toilet according to claim 1 or 2, wherein the curved surface is positioned outside an inner opening of the toilet seat.

4. A flush toilet as described in any one of claims 1 and 2, wherein the boundary portion gradually changes from the decoration of the first portion to the decoration of the second portion.

5. The first part is provided with only a first decoration, The flush toilet according to claim 1 or 2, wherein the second portion is provided with only a second decoration that is different from the first decoration.

6. A bright glaze is applied to the first part, The flush toilet according to claim 1 or claim 2, wherein the second portion is coated with a matte glaze.

7. The boundary portion is coated with different glazes in layers, 3. The flush toilet according to claim 1 or claim 2, wherein the thickness of the glaze at the boundary portion is greater than the thickness of the glaze in the portion where the glaze is not applied.

8. The boundary portion is formed by applying a first glaze and a second glaze different from the first glaze on the surface of the first glaze, 3. The flush toilet according to claim 1 or claim 2, wherein the thickness of the second glaze is thinner than the thickness of the first glaze at the boundary portion.

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