Sanitary ware

Abstract

The present invention provides sanitary ware that prevents the glaze from peeling off due to foreign matter adhering to the glazed part during firing when the glazed part is fired during the ceramic molding process. [Solution] The sanitary ware 1 of the present invention has mutually perpendicular X, Y, and Z axes, a first wall portion 16 forming a plane P1 extending toward the X and Y axes, a second wall portion 18 forming a plane P2 extending toward the Y and Z axes, a third wall portion forming a plane P3 extending toward the Z and X axes, and a central part O1 where the first wall portion, the second wall portion, and the third wall portion intersect each other. Each of the first wall portion, the second wall portion, the third wall portion, and the central part is provided with a glazed portion G which is glazed during ceramic molding, and the glazed portion of the central part is provided with inclined surfaces P4, 28, 30 which prevent the glaze from accumulating.

Description

Technical Field

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[0001] The present invention relates to sanitary ceramics, and particularly to sanitary ceramics including wash-down toilets, urinals, wash basins, etc. formed of ceramics.

Background Art

[0002] Conventionally, as sanitary ceramics including wash-down toilets, urinals, wash basins, etc. formed of ceramics, for example, as described in Patent Document 1, in parts such as the drainage trap inlet, the back surface of the rim, the lower surface of the rim, the side surface of the water outlet hole, the side surface of the overflow hole, etc. where it is difficult for the glazing spray to reach, there is a known sanitary ceramic that maintains the function of being difficult to get dirty or moldy over a long period of time and can be easily removed even if adhered. In such conventional sanitary ceramics described in Patent Document 1, in order to provide shape retention, reinforcing ribs, etc. are provided on the outer shape, and in order to satisfy its effects, functions, design properties, etc., after the glaze is applied to a predetermined part during ceramic molding, firing is performed.

Prior Art Documents

Patent Documents

[0003] <00―00018>

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional sanitary ceramics described in Patent Document 1 mentioned above, if glazing is performed with foreign matter adhering during ceramic molding, there is a problem that the glaze may peel off after firing, leading to defective products. [[ID=3―]]On the other hand, for such foreign matter, it is common to wipe off the foreign matter by processing such as wiping by hand. However, in the recesses or corners of the above-mentioned reinforcing ribs, it is difficult to remove the adhering foreign matter that cannot be reached by fingers. Therefore, preventing glaze defects (such as glaze peeling) after firing caused by foreign matter has become a pressing issue in recent years.

[0005] Therefore, the present invention has been made to solve the problems of the prior art described above and the issues that have been requested in recent years, and aims to provide sanitary ware that can prevent the glaze from peeling off due to foreign matter adhering to the glazed part when the glazed part that was applied during the ceramic molding process is fired. [Means for solving the problem]

[0006] To solve the above-mentioned problems, the present invention provides a sanitary ware consisting of a flush toilet, urinal, or washbasin made of ceramic, having mutually perpendicular X, Y, and Z axes, a first wall portion forming a plane extending toward the X and Y axes, a second wall portion forming a plane extending toward the Y and Z axes, a third wall portion forming a plane extending toward the Z and X axes, and a central part where the first, second, and third wall portions intersect each other, wherein each of the first, second, and third wall portions and the central part is provided with a glazed portion that is glazed during ceramic molding, and the glazed portion of the central part is provided with an inclined surface to prevent the glaze from accumulating. In the present invention configured in this way, the glazed portion at the center where the first wall portion, the second wall portion, and the third wall portion intersect is provided with an inclined surface to prevent glaze accumulation, thereby preventing foreign matter from adhering to the center. Furthermore, when glaze is applied to the first wall, second wall, third wall, and central part during the ceramic molding process, the inclined surface prevents glaze from accumulating in the center. This prevents the glaze from peeling off due to foreign matter adhering to the inclined surface when the glazed part of the pottery is fired during the molding process.

[0007] In the present invention, preferably, the present invention further includes an X-axis joint that joins the first wall portion and the third wall portion along the X-axis direction from the center, and a Y-axis joint that joins the first wall portion and the second wall portion along the Y-axis direction from the center, wherein the glazed portion is provided at the X-axis joint and the Y-axis joint, and the first inclined surface and the second inclined surface are provided in areas of a predetermined distance toward the distal direction along the X-axis and Y-axis from the center. In the present invention configured as described above, the X-axis joint and the Y-axis joint are each provided with a first inclined surface and a second inclined surface, respectively, in a region extending a predetermined distance from the center toward the distal direction along the X-axis and Y-axis. Therefore, during pottery molding, it is possible to prevent foreign matter from adhering to the first inclined surface and the second inclined surface of the glazed portion in a region extending a predetermined distance from the center where the first wall, second wall, and third wall intersect before glazing, in the region extending toward the distal direction along the X-axis and Y-axis. Therefore, during the pottery molding process, it is possible to prevent the glaze from peeling off due to foreign matter adhering to the first and second inclined surfaces when the glazed parts are fired.

[0008] In the present invention, preferably, at least one of the first wall portion, the second wall portion, and the third wall portion forms a plane substantially parallel to the horizontal support surface of the base during the firing process when forming the ceramic, and the inclined surface of the central part, the first inclined surface, or the second inclined surface is inclined at a predetermined angle with respect to the substantially parallel plane when viewed from the X-axis direction or the Y-axis direction. In the present invention configured as described above, at least one of the first wall portion, the second wall portion, and the third wall portion forms a plane substantially parallel to the horizontal support surface of the base during the firing process when forming the ceramic, and the central inclined surface, the first inclined surface, or the second inclined surface is inclined at a predetermined angle when viewed from the X-axis direction or the Y-axis direction with respect to the plane substantially parallel to the horizontal support surface, thereby preventing foreign matter from adhering to the inclined surface. Furthermore, when glaze is applied to the first wall, second wall, third wall, and central part during the ceramic molding process, the inclined surface prevents glaze from accumulating. This prevents the glaze from peeling off due to foreign matter adhering to the inclined surface when the glazed part of the pottery is fired during the molding process.

[0009] In the present invention, preferably, the sanitary ware is a floor-standing flush toilet placed on the floor surface, the first wall portion is a horizontal wall portion that is substantially parallel to the base during ceramic molding, and the second wall portion and the third wall portion are vertical wall portions that rise from the horizontal wall portion. In the present invention configured as described above, the sanitary ware is a floor-standing flush toilet that is placed on the floor surface, and its first wall is a horizontal wall that is substantially parallel to the base during ceramic molding, and the second and third walls are vertical walls that rise from the horizontal wall. As a result, during ceramic molding, it is possible to prevent foreign matter from adhering to the first and second inclined surfaces of the glazed portion in a region at a predetermined distance distally along the X and Y axes from the center where the first, second, and third walls intersect before glazing. Therefore, during the pottery molding process, it is possible to prevent the glaze from peeling off due to foreign matter adhering to the first and second inclined surfaces when the glazed parts are fired.

[0010] In the present invention, preferably, the first inclined surface and the second inclined surface are set to have an inclination angle of 40 degrees or more and 50 degrees or less with respect to the horizontal plane of the horizontal wall portion when viewed from the X axis and the Y axis, respectively, in a side view. In the present invention configured as described above, the inclination angle of the horizontal wall portion with respect to the horizontal plane is set to 40 degrees or more and 50 degrees or less in a side view of the first inclined surface and the second inclined surface as seen from the X axis and Y axis, respectively, thereby effectively preventing foreign matter from adhering to the first inclined surface and the second inclined surface during ceramic molding. Therefore, when the glazed part is fired during pottery forming, it is possible to effectively prevent the glaze from peeling off due to foreign matter adhering to each of the first inclined surface and the second inclined surface.

Advantages of the Invention

[0011] According to the sanitary pottery of the present invention, when the glazed part glazed during pottery forming is fired, it is possible to prevent the glaze from peeling off due to adhering foreign matter.

Brief Description of the Drawings

[0012] [Figure 1] [[ID=_{15}]]FIG. 1 is a perspective view of a wash-down toilet, which is a sanitary pottery according to the first embodiment of the present invention, as viewed obliquely from a direction, showing a state in which it is placed on a base during a drying process or a firing process of pottery forming. [Figure 2] An enlarged perspective view of part A in FIG. 1. [Figure 3] A cross-sectional view taken along line III-III in FIG. 2. [Figure 4] A cross-sectional view taken along line IV-IV in FIG. 2. [Figure 5] A cross-sectional view taken along line V-V in FIG. 2. [Figure 6] A cross-sectional view taken along line VI-VI in FIG. 2. [Figure 7] FIG. 7 is a perspective view of a wash-down toilet, which is a sanitary pottery according to the second embodiment of the present invention, as viewed obliquely from a direction, showing a state in which it is placed on a base during a drying process or a firing process of pottery forming. [Figure 8] An enlarged perspective view of part B in FIG. 7. [Figure 9] A partially enlarged view showing an enlarged center part of the base end portion of the rib shown in FIG. 8.

Modes for Carrying Out the Invention

[0013] First, referring to FIGS. 1 to 6, a wash-down toilet, which is a sanitary pottery according to the first embodiment of the present invention, will be described. FIG. 1 is a perspective view of a washdown toilet, which is a sanitary ware according to the first embodiment of the present invention, as seen from an oblique direction, showing a state in which it is placed on a base during a drying process or a firing process of pottery forming. As shown in FIG. 1, the washdown toilet 1, which is a sanitary ware according to the present embodiment, is a so-called "floor-mounted washdown toilet" that is installed so as to contact the floor surface in the toilet room.

[0014] Further, the washdown toilet 1 includes a toilet body 2 formed of pottery. The toilet body 2 includes a bowl portion 4 for receiving dirt and a skirt portion 6 that covers the outer periphery of the bowl portion 4 from the side. Here, the "pottery" in the present specification includes general sanitary ware materials such as porcelain and ceramics. Furthermore, the bottom portion 8 of the toilet body 2 is grounded to a base 10 disposed in the kiln space K during a drying process or a firing process in pottery forming. Note that, regarding the posture of the toilet body 2 disposed on the base 10 during a drying process or a firing process in pottery forming, a posture in which portions other than the bottom portion 8 of the toilet body 2 are disposed on the base 10 may be adopted. In addition, the floor-mounted washdown toilet 1 of the present embodiment may be a so-called "wash-down type" washdown toilet that washes away dirt in the bowl portion 4 due to a height difference in the vertical direction of the bowl portion 4 in the toilet body 2, or may be in the form of other washdown toilets such as a so-called "siphon type" washdown toilet that sucks in dirt in the bowl portion 4 using a siphon action and discharges it to the outside from a drain trap portion.

[0015] Next, an outline of the manufacturing process of the pottery toilet body 2 in the washdown toilet 1 of the present embodiment will be briefly described. The ceramic molding process for the toilet bowl body 2 includes a pouring process in which slip is poured into a mold made of plaster or resin to form the shape of the ceramic; a materialization process in which the molded body is attached to the mold; a slip removal process in which excess slip is discharged from inside the molded body after materialization to the mold; a clay compaction process in which the moisture content of the molded body is reduced to improve shape retention and demolding properties; a demolding process in which the molded body is removed from the mold; a drying process in which the molded body is dried after the demolding process; a glazing process in which the molded body is glazed after the drying process; and a firing process in which the molded body is fired after the glazing process.

[0016] Next, Figure 2 is an enlarged perspective view of section A in Figure 1. First, as shown in Figures 1 and 2, the bottom 8 of the toilet bowl body 2 of the flush toilet 1 of this embodiment is provided with a pair of left and right mounting parts 12 and 14. These mounting parts 12 and 14 are located behind and below the skirt portion 6 and are positioned on the base 10 during the glazing process described above in ceramic molding. Next, as shown in Figure 2, one of the mounting parts 12 on the left or right side is equipped with mutually perpendicular X, Y, and Z axes.

[0017] Next, as shown in Figure 2, the toilet bowl body 2 is provided with a first wall portion 16 that forms a plane P1 extending in the X and Y axes and forms the upper surface of the mounting portion 12. Furthermore, as shown in Figure 2, the toilet bowl body 2 is provided with a second wall portion 18 that forms a plane P2 extending toward the Y-axis and Z-axis, thereby forming the front surface of the mounting portion 12. Furthermore, as shown in Figure 2, the toilet bowl body 2 includes a third wall portion 20 that forms a plane P3 extending along the Z-axis and X-axis. In other words, the first wall portion 16 is a horizontal wall portion that is substantially parallel to the base 10 during ceramic molding, while the second wall portion 18 and the third wall portion 20 are vertical wall portions that rise up relative to the first wall portion 16 (horizontal wall portion). Here, each of the planes P1, P2, and P3 may be formed as planes perpendicular to each other, or not limited to this, and each of the planes P1, P2, and P3 may be formed so as to intersect at angles other than orthogonal angles.

[0018] Next, as shown in Figure 2, the toilet bowl body 2 includes an inclined region 22 that includes a central point O1 where the first wall portion 16, the second wall portion 18, and the third wall portion 20 intersect with each other. Furthermore, the surfaces of the first wall portion 16 (plane P1), the second wall portion 18 (plane P2), the third wall portion 20 (plane P3), and the inclined region 22 are each provided with glazed areas G that are applied during the ceramic molding process. Furthermore, the glazed area G of the inclined region 22, which includes the central part O1, is provided with an inclined surface P4 to prevent glaze accumulation.

[0019] Next, Figures 3 and 4 are cross-sectional views along lines III-III and IV-IV in Figure 2, respectively. Also, Figures 5 and 6 are cross-sectional views along lines VV and VI-VI in Figure 2, respectively. As shown in Figures 2 to 6, the toilet bowl body 2 further includes an X-axis joint 24 that joins the first wall portion 16 and the third wall portion 20 along the X-axis direction from the center O1, and a Y-axis joint 26 that joins the first wall portion 16 and the second wall portion 18 along the Y-axis direction from the center O1. Furthermore, as shown in Figures 2 to 4, the glazed portion G is also provided at the X-axis joint 24 and the Y-axis joint 26, and the first inclined surface 28 and the second inclined surface 30 are provided only in the sections 22a and 22b, which are predetermined distances L1 and L2 from the central part O1 in the distal direction along the X-axis and Y-axis, respectively. Furthermore, as shown in Figures 2, 5, and 6, the glazed portion G is also provided in curved regions 32 and 34 (first curved region 32 and second curved region 34) located outward along the X and Y axes, respectively, with respect to each inclined region 22a and 22b.

[0020] Furthermore, as shown in Figures 2 to 4, the plane P1 of the first wall portion 16, among the first wall portion 16, the second wall portion 18, and the third wall portion 20, forms a plane that is substantially parallel to the horizontal support surface P5 of the base 10 during the firing process when forming the ceramic. Furthermore, as shown in Figure 3, the inclined surface P4 and the first inclined surface 28 of the inclined region 22 including the central part O1 are inclined at a predetermined angle α1 when viewed from the X-axis direction with respect to the plane P1 of the first wall portion 16. Furthermore, as shown in Figure 4, the inclined surface P4 and the second inclined surface 30 of the inclined region 22 including the central part O1 are inclined at a predetermined angle β1 when viewed from the Y-axis direction with respect to the plane P1 of the first wall portion 16. Here, as shown in Figures 3 and 4, the inclination angles α1 and β1 of the first inclined surface 28 and the second inclined surface 30 with respect to the plane P1 (horizontal plane) of the first wall portion 16 (horizontal wall portion) are preferably set to 40 degrees or more and 50 degrees or less in a side view from the X axis and Y axis, respectively (40 degrees ≤ α1 ≤ 50 degrees, 40 degrees ≤ β1 ≤ 50 degrees), and most preferably set to 45 degrees (α1 = β1 = 45 degrees).

[0021] Furthermore, as shown in Figures 5 and 6, each curved region 32, 34 forms curved surfaces P6, P7, respectively, in cross-sectional views from the X and Y axes. As a result, the glazed portions G of the X-axis joint 24 and the Y-axis joint 26 gradually change from the inclined surfaces 28 and 30 of the respective inclined regions 22a and 22b to the curved surfaces P6 and P7 of the respective curved regions 32 and 34, respectively, along the X and Y axes. Furthermore, as shown in Figures 3 and 4, it is preferable to set the widths W1 and W2 of each inclined surface 28 and 30 to 3 mm or more.

[0022] In the flush toilet bowl 1, which is a sanitary ware according to the first embodiment of the present invention described above, the glazed portion G of the central part O1 where the first wall portion 16, the second wall portion 18, and the third wall portion 20 intersect is provided with inclined surfaces 28, 30, and P4 to prevent glaze accumulation, thereby preventing foreign matter from adhering to the central part O1. Furthermore, when glaze is applied to the first wall portion 16, the second wall portion 18, the third wall portion 20, and the central portion O1 during ceramic molding, the inclined surfaces 28, 30, and P4 prevent glaze accumulation, thus preventing the glaze from remaining in the central portion O1. This prevents the glaze from peeling off due to foreign matter adhering to the inclined surfaces 28 and 30 when the glazed part G is fired during the pottery molding process.

[0023] Furthermore, in the flush toilet 1, which is a sanitary ware according to this embodiment, the X-axis joint 24 and the Y-axis joint 26 are each provided with a first inclined surface 28 and a second inclined surface 30, respectively, in areas 22a and 22b with predetermined distances L1 and L2 extending distally from the central part O1 along the X and Y axes, respectively. This prevents foreign matter from adhering to the first inclined surface 28 and the second inclined surface 30 of the glazed portion G in areas 22a and 22b, which are located at predetermined distances L1 and L2 distal to the X and Y axes from the central point O1 where the first wall portion 16, the second wall portion 18, and the third wall portion 20 intersect before glazing, during the ceramic molding process. Therefore, during the pottery molding process, when the glazed part G is fired, it is possible to prevent the glaze from peeling off due to foreign matter adhering to the first inclined surface 28 and the second inclined surface 30, respectively.

[0024] Furthermore, according to the flush toilet 1 which is sanitary ware according to this embodiment, at least one of the first wall portion 16, the second wall portion 18, and the third wall portion 20 forms a plane P1 that is substantially parallel to the horizontal support surface P5 of the base 10 during the firing process when the ceramic is formed, and the inclined surface P4 of the central part O1, the first inclined surface 28, and the second inclined surface 30 are inclined at predetermined angles α1 and β1 when viewed from the X-axis direction and the Y-axis direction, respectively, with respect to the plane P1 that is substantially parallel to the horizontal support surface P5, thereby preventing foreign matter from adhering to the inclined surfaces P4, 28, and 30. Furthermore, when glaze is applied to the first wall portion 16, the second wall portion 18, the third wall portion 20, and the central part O1 during the ceramic molding process, the inclined surfaces P4, 28, and 30 can prevent glaze from accumulating. This prevents the glaze from peeling off during firing of the glazed part G in the ceramic molding process due to foreign matter adhering to the inclined surfaces P4, 28, and 30.

[0025] Furthermore, according to the flush toilet 1 which is sanitary ware according to this embodiment, the sanitary ware is a floor-standing flush toilet which is placed on the floor surface, and its first wall portion 16 is a horizontal wall portion which is substantially parallel to the base 10 when the ceramic is formed, and the second wall portion 18 and the third wall portion 20 are vertical wall portions which rise up from the first wall portion 16 (horizontal wall portion). This prevents foreign matter from adhering to the first inclined surface 28 and the second inclined surface 30 of the glazed portion G in regions 22a and 22b at predetermined distances L1 and L2 distal to the center O1 where the first wall portion 16, the second wall portion 18, and the third wall portion 20 intersect before glazing, respectively. Therefore, during the pottery molding process, when the glazed part G is fired, it is possible to prevent the glaze from peeling off due to foreign matter adhering to the first inclined surface 28 and the second inclined surface 30, respectively.

[0026] Furthermore, in the flush toilet 1, which is sanitary ware according to this embodiment, the inclination angles α1 and β1 of the first wall portion 16, which is a horizontal wall portion, with respect to the horizontal plane P1 are set to 40 degrees or more and 50 degrees or less in a side view of the first inclined surface 28 and the second inclined surface 30, respectively, when viewed from the X and Y axes, respectively, thereby effectively preventing foreign matter from adhering to the first inclined surface 28 and the second inclined surface 30 during ceramic molding. Therefore, during the pottery molding process, it is possible to effectively prevent the glaze from peeling off due to foreign matter adhering to the first inclined surface 28 and the second inclined surface 30 when the glazed part G is fired.

[0027] Next, with reference to Figures 7 to 9, a flush toilet, which is a sanitary ware according to a second embodiment of the present invention, will be described. Figure 7 is a perspective view of a flush toilet, which is a sanitary ware according to the second embodiment of the present invention, viewed from an oblique direction, showing the state in which it is placed on the base during the drying process or firing process of the ceramic molding. Figure 8 is an enlarged perspective view of part B in Figure 7. Furthermore, Figure 9 is a partial enlargement view of the central part of the base end portion of the rib shown in Figure 8. In the flush toilet 100, which is sanitary ware according to this embodiment shown in Figures 7 to 9, the same reference numerals are used for parts that are the same as those in the flush toilet 1 according to the first embodiment of the present invention described above, and their descriptions are omitted. As shown in Figures 7 to 9, the flush toilet 100, which is sanitary ware according to this embodiment, is equipped with a reinforcing rib 104 at the rear end of the toilet bowl body 102. The lower end of this rib 104 is provided on a first wall portion 116 that forms the upper surface of a first rear portion 112 that extends a predetermined distance upward from the bottom portion 108 of the toilet bowl body 102. Furthermore, the rib 104 forms a second wall portion 118 that extends upward by a predetermined distance from the lower end 104a provided on the upper surface (first wall portion 116) of the first rear portion 112. This second wall portion 118 extends vertically along the third wall portion 120 which forms the back surface P103 of the second back surface portion 114, which is above and in front of the first back surface portion 112. As a result, the first wall portion 116, the second wall portion 118, and the third wall portion 120 are each integrally formed from ceramic material.

[0028] In other words, as shown in Figures 8 and 9, the first wall portion 116 forms a plane P101 that extends generally in the X-axis and Y-axis directions, forming the upper surface of the first rear portion 112. Furthermore, as shown in Figures 8 and 9, the second wall portion 118 forms a plane P102 that extends toward the Y-axis and Z-axis. Furthermore, as shown in Figures 8 and 9, the third wall portion 120 forms a plane P103 that extends toward the Z-axis and X-axis. As a result, the first wall section 116 is a horizontal wall section, and the second wall section 18 and the third wall section 20 are vertical wall sections that rise up relative to the first wall section 116 (horizontal wall section). Here, each of the planes P101, P102, and P103 may be formed as planes perpendicular to each other, or not limited to this, and each of the planes P101, P102, and P103 may be formed so as to intersect at angles other than orthogonal angles to each other.

[0029] Next, as shown in Figures 8 and 9, the toilet bowl body 102 includes an inclined region 122 that includes a central point O101 where the first wall portion 116, the second wall portion 118, and the third wall portion 120 intersect with each other. Furthermore, the flat surface P101 of the first wall portion 116, the flat surface P102 of the second wall portion 118, the flat surface P103 of the third wall portion 120, and the surface of the inclined region 122 are each provided with glazed areas G that are glazed during the ceramic molding process. Furthermore, the glazed portion G of the inclined region 122, including the central part O101, is provided with an inclined surface P104 to prevent glaze accumulation.

[0030] Next, as shown in Figures 8 and 9, the toilet bowl body 102 further includes an X-axis joint 124 that joins the first wall portion 116 and the third wall portion 120 along the X-axis direction from the center O101, and a Y-axis joint 126 that joins the first wall portion 116 and the second wall portion 118 along the Y-axis direction from the center O101. Furthermore, as shown in Figures 8 and 9, the glazed portion G is also provided at the X-axis joint 124 and the Y-axis joint 126, and the first inclined surface 128 and the second inclined surface 130 are provided in regions 122a and 122b, respectively, with predetermined distances L101 and L102 extending distally from the central part O101 along the X-axis and Y-axis. Furthermore, as shown in Figures 8 and 9, the glazed portion G is also provided in curved regions 132 and 134 (first curved region 132 and second curved region 134) located outward along the X and Y axes, respectively, with respect to each inclined region 122a and 122b.

[0031] Furthermore, as shown in Figures 8 and 9, the plane P101 of the first wall portion 116, one of the first wall portion 116, the second wall portion 118, and the third wall portion 120, forms a plane that is substantially parallel to the horizontal support surface P105 of the base 110 during the firing process when forming the ceramic. Furthermore, as shown in Figures 8 and 9, the inclined surface P104 and the first inclined surface 128 of the inclined region 122 including the central part O101 are inclined at a predetermined angle α101 when viewed from the X-axis direction with respect to the plane P101 of the first wall portion 116. Furthermore, as shown in Figures 8 and 9, the inclined surface P104 and the second inclined surface 130 of the inclined region 122 including the central part O101 are inclined at a predetermined angle β101 when viewed from the Y-axis direction with respect to the plane P101 of the first wall portion 116. Here, as shown in Figures 8 and 9, the inclination angles α101 and β101 of the first inclined surface 128 and the second inclined surface 130 with respect to the plane P101 (horizontal plane) of the first wall portion 116 (horizontal wall portion) are preferably set to 40 degrees or more and 50 degrees or less in a side view from the X axis and Y axis, respectively (40 degrees ≤ α101 ≤ 50 degrees, 40 degrees ≤ β101 ≤ 50 degrees), and most preferably set to 45 degrees (α101 = β101 = 45 degrees). Furthermore, as shown in Figure 9, each curved region 132, 134 forms curved surfaces P106, P107, respectively, in cross-sectional views from the X and Y axes. As a result, the glazed portion G of the X-axis joint 124 and the Y-axis joint 126 gradually changes from the inclined surfaces 128 and 130 of each inclined region 122a and 122b to the curved surface regions P106 and P107 of each curved region 132 and 134, respectively, along the X and Y axes. Furthermore, as shown in Figure 9, it is preferable to set the widths W101 and W102 of each inclined surface 128 and 130 to 3 mm or more.

[0032] According to the flush toilet bowl 100, which is a sanitary ware according to the second embodiment of the present invention described above, the glazed portion G of the central part O101 where the first wall portion 116, the second wall portion 118, and the third wall portion 120 intersect is provided with inclined surfaces 128, 130, and P104 to prevent glaze accumulation, thereby preventing foreign matter from adhering to the central part O101. Furthermore, when glaze is applied to the first wall portion 116, the second wall portion 118, the third wall portion 120, and the central part O101 during pottery molding, the inclined surfaces 128, 130, and P104 prevent glaze accumulation, thus preventing the glaze from remaining in the central part O101. This prevents the glaze from peeling off due to foreign matter adhering to the inclined surfaces 128 and 130 when the glazed part G is fired during the pottery molding process.

[0033] Furthermore, in the flush toilet 100, which is sanitary ware according to this embodiment, the X-axis joint 124 and the Y-axis joint 126 are each provided with a first inclined surface 128 and a second inclined surface 130, respectively, in areas 122a and 122b, which are predetermined distances L101 and L102 from the central part O101 in the distal direction along the X-axis and Y-axis, respectively. This prevents foreign matter from adhering to the first inclined surface 128 and the second inclined surface 130 of the glazed portion G in areas 122a and 122b, which are located at predetermined distances L101 and L102 distally along the X and Y axes, respectively, from the central point O101 where the first wall portion 116, the second wall portion 118, and the third wall portion 120 intersect, during the ceramic molding process. Therefore, during the pottery molding process, when the glazed part G is fired, it is possible to prevent the glaze from peeling off due to foreign matter adhering to the first inclined surface 128 and the second inclined surface 130, respectively.

[0034] Furthermore, according to the flush toilet bowl 100, which is sanitary ware according to this embodiment, at least one of the first wall portion 116, the second wall portion 118, and the third wall portion 120 forms a plane P101 that is substantially parallel to the horizontal support surface P105 of the base 110 during the firing process when the ceramic is formed. The inclined surface P104, the first inclined surface 128, and the second inclined surface 130 of the central part O101 are inclined at predetermined angles α101 and β101 when viewed from the X-axis and Y-axis directions, respectively, with respect to the plane P101 that is substantially parallel to the horizontal support surface P105. This prevents foreign matter from adhering to the inclined surfaces P104, 128, and 130. Furthermore, when glaze is applied to the first wall portion 116, the second wall portion 118, the third wall portion 120, and the central part O101 during pottery molding, the inclined surfaces P104, 128, and 130 prevent glaze from accumulating. This prevents the glaze from peeling off during firing of the glazed parts G in the pottery molding process due to foreign matter adhering to the inclined surfaces P104, 128, and 130.

[0035] Furthermore, according to the flush toilet 100 which is sanitary ware according to this embodiment, the sanitary ware is a floor-standing flush toilet which is placed on the floor surface, and its first wall portion 116 is a horizontal wall portion which is substantially parallel to the base 110 when the ceramic is formed, and the second wall portion 118 and the third wall portion 120 are vertical wall portions which rise up from the first wall portion 116 (horizontal wall portion). This prevents foreign matter from adhering to the first inclined surface 128 and the second inclined surface 130 of the glazed portion G in regions 122a and 122b at predetermined distances L101 and L102 distally along the X and Y axes, respectively, from the central point O101 where the first wall portion 116, the second wall portion 118, and the third wall portion 120 intersect before glazing. Therefore, during the pottery molding process, when the glazed part G is fired, it is possible to prevent the glaze from peeling off due to foreign matter adhering to the first inclined surface 128 and the second inclined surface 130, respectively.

[0036] Furthermore, according to the flush toilet 100, which is sanitary ware according to this embodiment, the inclination angles α101 and β101 of the first wall portion 116 (horizontal wall portion) with respect to the horizontal plane P1 are set to 40 degrees or more and 50 degrees or less in side views of the first inclined surface 128 and the second inclined surface 130, respectively, when viewed from the X and Y axes, respectively, thereby effectively preventing foreign matter from adhering to the first inclined surface 128 and the second inclined surface 130 during ceramic molding. Therefore, during the pottery molding process, it is possible to effectively prevent the glaze from peeling off due to foreign matter adhering to the first inclined surface 128 and the second inclined surface 130 when the glazed part G is fired.

[0037] In the first and second embodiments of the present invention described above, the flush toilet 1,100, which is sanitary ware, is described as a so-called "floor-standing flush toilet" that is installed in contact with the floor surface of the toilet room. However, the invention is not limited to this form, and may also be a so-called "wall-mounted flush toilet" in which the bottom 8 of the toilet bowl body 2 is positioned so as to be spaced above the floor surface of the toilet room, and the rear end of the toilet bowl body 2 is fixed to the wall behind it. Furthermore, if a "wall-mounted flush toilet" is adopted, for example, during the ceramic molding process, the drying and firing processes are carried out in such a position that the rear end of the toilet bowl body 2,102, as it would appear in a toilet room installation, is positioned on the base 10,110 within the kiln space K.

[0038] Furthermore, while the first and second embodiments of the present invention described above used flush toilets 1 and 100 as examples of sanitary ware, other forms such as urinals and washbasins may also be used as long as they are sanitary ware. [Explanation of symbols]

[0039] 1. A flush toilet made of sanitary ware according to the first embodiment of the present invention. 2 Toilet bowl 4 Bowl section 6. Skirt section 8. Bottom of the toilet bowl 10 bases 12 Mounting part 14 Mounting part 16 1st wall section 18 Second wall section 20 Third wall 22 Slope area 22a Slope area 22b Slope area 24 X-axis junction 26 Y-axis joint 28 1st slope 30 Second slope 32 First curved surface area 34 Second curved surface area 100 A flush toilet, which is sanitary ware according to the second embodiment of the present invention. 102 Toilet bowl 104 Rib 108 Bottom of the toilet bowl 110 base 112 1st back section 114 2nd back section 116 1st wall 118 Second wall section 120 Third wall 122 Slope area 122a Slope area 122b Slope area 124 X-axis joint 126 Y-axis joint 128 1st slope 130 Second slope 132 First curved surface area 134 Second curved surface area G Glaze section K Space inside the kiln L1 Predetermined distance L2 predetermined distance O1 center P1 plane P2 plane P3 plane P4 Inclined surface P5 Horizontal support surface of the base P6 Curved surface P7 Curved surface P101 Plane P102 Plane P103 Plane P104 Inclined surface P105 Horizontal support surface of the base P106 Curved surface P107 Curved surface XX axis YY axis ZZ axis W1 Width of the inclined surface W2 Width of the inclined surface W101 Width of the inclined surface W102 Width of the inclined surface α1 Predetermined angle α101 Predetermined angle β1 Predetermined angle β101 Predetermined angle

Claims

1. Sanitary ware consisting of a flush toilet, urinal, or washbasin made of ceramic, The X, Y, and Z axes are perpendicular to each other, A first wall portion that forms a plane extending toward the X-axis and Y-axis, A second wall portion that forms a plane extending toward the Y-axis and Z-axis, A third wall portion that forms a plane extending toward the Z-axis and X-axis, The first wall portion, the second wall portion, and the third wall portion each have a central point where they intersect, Each of the above-mentioned first wall portion, second wall portion, third wall portion, and central portion is equipped with a glazed portion that is glazed during the ceramic molding process. The sanitary ware is characterized by having a sloping surface in the glazed central part to prevent the glaze from accumulating.

2. Furthermore, it has an X-axis joint that joins the first wall portion and the third wall portion along the X-axis direction from the center, and a Y-axis joint that joins the first wall portion and the second wall portion along the Y-axis direction from the center, The sanitary ware according to claim 1, wherein the glazed portion is provided at the X-axis joint and the Y-axis joint, and the first inclined surface and the second inclined surface are provided in areas extending a predetermined distance from the center toward the distal direction along the X-axis and the Y-axis, respectively.

3. Sanitary ware according to claim 2, wherein at least one of the first wall portion, the second wall portion, and the third wall portion forms a plane substantially parallel to the horizontal support surface of the base during the firing process when forming the ceramic, and the inclined surface in the center, the first inclined surface, or the second inclined surface is inclined at a predetermined angle with respect to the substantially parallel plane when viewed from the X-axis direction or the Y-axis direction.

4. The sanitary ware described above is a floor-standing flush toilet bowl positioned on the floor surface, wherein the first wall portion is a horizontal wall portion substantially parallel to the base during ceramic molding, and the second wall portion and the third wall portion are each vertical wall portions rising from the horizontal wall portion, as described in claim 2.

5. The sanitary ware according to claim 2, wherein the first inclined surface and the second inclined surface are set to have an inclination angle of 40 degrees or more and 50 degrees or less with respect to the horizontal plane of the horizontal wall portion in a side view as seen from the X axis and the Y axis, respectively.

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