Toilet bowl and antisweat material

Abstract

To provide a toilet bowl capable of excellently preventing dew condensation of a trap part.SOLUTION: The toilet 1 includes the toilet main body 10 having the toilet bowl part 20 and the toilet drainage channel 40 communicating with the toilet bowl part 20, the antisweat material 170 attached to the toilet main body 10 so as to form a space between the antisweat material 170 and the lower surface of the trap part 80 formed by the toilet drainage channel 40, and the limiting part provided between the trap part 80 and the antisweat material 170 and below the upper end of the antisweat material 170 to limit the movement of the antisweat material 200 in the direction approaching the trap part 80.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a toilet bowl and a moisture-proof material. [Background technology]

[0002] Patent Document 1 discloses a conventional toilet. This toilet includes a toilet body and a dew-proofing material. The toilet body has a toilet bowl and a toilet drainage channel that is connected to the toilet bowl. The toilet body has a trap section formed by the toilet drainage channel. The dew-proofing material is attached to the toilet body, forming a space between it and the underside of the trap section. The space formed between the dew-proofing material and the underside of the trap section functions as an insulating layer, and together with the insulating dew-proofing material, prevents condensation from forming on the underside of the trap section. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-159184 Summary of the Invention [Problem to be solved by the invention]

[0004] In the toilet disclosed in Patent Document 1, when attaching the dew prevention material to the toilet body, the material is moved from below the trap section toward the trap section. This can result in the dew prevention material getting too close to the underside of the trap section, or most of the upper surface of the dew prevention material coming into contact with the underside of the trap section. In this case, the space between the dew prevention material and the underside of the trap section cannot be properly formed, and the insulating function of the space can be compromised.

[0005] The present disclosure has been made in consideration of the above-described conventional situation, and has as its object to provide a toilet bowl that can effectively prevent condensation in the trap portion. [Means for solving the problem]

[0006] The toilet disclosed herein comprises a toilet body having a toilet bowl and a toilet drainage channel connected to the toilet bowl, a moisture-proof material attached to the toilet body, forming a space between the toilet body and the underside of a trap formed by the toilet drainage channel, and a restricting section located between the trap and the moisture-proof material and below the upper end of the moisture-proof material, which restricts movement of the moisture-proof material in a direction approaching the trap. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a cross-sectional view of the toilet bowl of embodiment 1 cut at the center in the left-right direction. [Figure 2] 1 is a partially cutaway perspective view showing a toilet body of the first embodiment. [Figure 3] FIG. 2 is a bottom view showing the toilet bowl of the first embodiment. [Figure 4] 1 is a perspective view showing a moisture-proof material of a first embodiment. [Figure 5] 2 is a cross-sectional view of the moisture-proof material of the first embodiment cut at the center of the restricting portion in the front-rear direction. FIG. [Figure 6] FIG. 10 is a cross-sectional view of the toilet bowl of embodiment 2 cut at the center in the left-right direction. DETAILED DESCRIPTION OF THE INVENTION

[0008] Embodiments 1 and 2 embodying the toilet of the present disclosure will be described with reference to the drawings. In the following description, the up-down direction refers to the positive direction of the X axis shown in Figures 1, 2, and 6 as the upward direction, and the negative direction of the X axis refers to the downward direction. Regarding the left-right direction, the positive direction of the Y axis shown in Figures 2 and 3 refers to the leftward direction, and the negative direction of the Y axis refers to the rightward direction. Regarding the front-rear direction, the negative direction of the Z axis shown in Figures 1, 2, 3, and 6 refers to the forward direction, and the positive direction of the Y axis refers to the rearward direction.

[0009] <Embodiment 1> As shown in FIG. 1, the toilet 1 of the first embodiment comprises a toilet body 10, a jet water spouting portion 100, a surface heater 130 serving as an anti-freeze member, a flame-retardant urethane foam sheet 150 serving as a cushioning material, and a dew prevention material 170. The toilet body 10 comprises a toilet bowl 20, an upper wall 30, a toilet drainage channel 40, an outer peripheral wall 50, a rear wall 60, and an inner wall 70. The toilet bowl 20 is generally bowl-shaped with an opening facing upward. In a plan view from above, the upper end opening 21 of the toilet bowl 20 is generally oval in shape and elongated in the front-to-rear direction. A lower end opening 23 is formed at the lower end of the toilet bowl 20, which is connected to the upstream end of the toilet drainage channel 40. The lower end opening 23 is open in the vertical direction. A water outlet (not shown) is formed in the upper left part of the toilet bowl 20. The water outlet is connected to a flush water supply source (not shown). Flush water discharged from the water discharge port flows from the lower end opening 23 into the toilet drainage channel 40 while swirling counterclockwise on the surface of the toilet bowl 20 in a plan view seen from above.

[0010] The upper wall portion 30 is continuous with the upper edge of the toilet bowl 20 and extends outward, forming the upper surface of the toilet body 10. The upper wall portion 30 has an upper surface recess 31 formed therein that extends in the front-to-rear and left-to-right directions along the rear edge of the upper opening 21 of the toilet bowl 20. The upper surface recess 31 opens toward the toilet bowl 20 and upward. A pair of mounting holes 30H, aligned left-to-right, are formed behind the upper surface recess 31 and penetrate the upper wall portion 30 in the vertical direction (see Figure 2). The mounting holes 30H are formed at symmetrical positions on the left and right of the toilet body 10. The pair of mounting holes 30H are used when attaching a toilet seat device (not shown) to the top of the toilet body 10.

[0011] The toilet drainage channel 40 comprises an inlet channel 41, an ascending channel 43, and a descending channel 45. The lower part of the toilet bowl 20, the inlet channel 41, and the ascending channel 43 form a trap section 80 where flush water accumulates below the pooled water level WL. The upper part of the inlet channel 41 communicates with the lower end opening 23 of the toilet bowl 20 over a range of approximately three-quarters of the way from the front end in the front-to-rear direction. The inlet channel 41 is located below the toilet bowl 20 and extends rearward from the lower end opening 23 of the toilet bowl 20. The inlet channel 41 is formed by an upper wall 41A, left and right walls 41B, and a lower wall 41C. The upper wall 41A is formed by a portion of the toilet bowl 20 rearward of the lower end opening 23 of the toilet bowl 20.

[0012] The left and right walls 41B of the inflow channel 41 extend downward from the lower part of the toilet bowl 20. The front end of the lower wall 41C of the inflow channel 41 is the lower part of the toilet bowl 20 and continues to the front edge of the lower end opening 23, and both left and right ends are continuous with the lower ends of the left and right walls 41B. The lower wall 41C of the inflow channel 41 has a curved portion 141 and a recessed portion 142. The lower wall 41C has a substantially uniform thickness. The curved portion 141 is curved so that it bulges diagonally forward and downward from the front end that is continuous with the lower part of the toilet bowl 20 in the central left-right cross-sectional shape of the toilet body 10.

[0013] As shown in Figures 1 and 2, recess 142 is continuous with the rear end of curved portion 141, with its inner surface recessed downward and its outer surface protruding downward. Recess 142 is formed by front surface portion 142A, bottom surface portion 142B, and rear surface portion 142C. Front surface portion 142A forms the front surface of recess 142. The upper end of front surface portion 142A is continuous with the rear end of curved portion 141 and is inclined downward and obliquely rearward. The front surface of recess 142, which is the inner surface of front surface portion 142A, and the outer surface of front surface portion 142A are approximately flat. A through hole 142H is formed in front surface portion 142A through which a water discharge nozzle 110, described later, is inserted.

[0014] The bottom surface portion 142B forms the bottom surface of the recessed portion 142. The front end of the bottom surface portion 142B is continuous with the lower end of the front surface portion 142A and extends rearward. The bottom surface of the recessed portion 142, which is the inner surface of the bottom surface portion 142B, and the outer surface of the bottom surface portion 142B are substantially flat except for the left and right edges and the rear edge, and extend in a substantially horizontal plane.

[0015] The rear surface portion 142C forms the rear surface of the recessed portion 142. The lower end of the rear surface portion 142C is continuous with the rear end of the bottom surface portion 142B and is inclined obliquely rearward and upward. The rear surface of the recessed portion 142, which is the inner surface of the rear surface portion 142C, and the outer surface of the rear surface portion 142C are curved surfaces that curve forward from the left-right center in the left-right direction. The upper end portion of the rear surface portion 142C is continuous with the lower ends of the left and right walls 43B of the ascending flow path 43.

[0016] The outer surface of the recess 142 protrudes downward below the outer surface of the curved portion 141 of the lower wall 41C of the inlet channel 41, and is located at the lowest point of the trap portion 80 formed by the toilet bowl 20 and the toilet drainage channel 40.

[0017] The upstream end of the rising flow path 43 is connected to the downstream end of the inlet flow path 41. The boundary B1 between the rising flow path 43 and the inlet flow path 41 forms a flow path that faces diagonally upward toward the rear. The rising flow path 43 extends diagonally upward toward the rear along the left-right central portion of the toilet bowl 20 rearward of the lower end opening 23 of the toilet bowl 20. In its downstream portion, the rising flow path 43 changes the flow path that faces diagonally upward toward the rear into a flow path that faces rearward. The rising flow path 43 is formed by an upper wall 43A, left and right walls 43B, and a lower wall 43C. Most of the upper wall 43A is made up of the left and right central portion of the rear side of the toilet bowl 20. Each of the left and right walls 43B of the rising flow path 43 extends downward from the toilet bowl 20 in a cross section cut along a plane perpendicular to the flow path direction. The lower wall 43C of the ascending flow path 43 extends obliquely upward toward the rear, and in a cross section cut along a plane perpendicular to the flow path direction, the left-right central portion is curved and bulges downward.

[0018] The upstream end of the descending flow path 45 is connected to the downstream end of the ascending flow path 43. The boundary B2 between the descending flow path 45 and the ascending flow path 43 forms a flow path facing rearward. The descending flow path 45 is curved in the upstream portion, changing the flow path facing rearward into a flow path facing vertically downward. The descending flow path 45 is formed by a tubular portion 45A. A portion of the tubular portion 45A is exposed rearward beyond the rear wall portion 60 of the toilet body 10. The downstream portion of the tubular portion 45A is approximately cylindrical, and is located inside the toilet body 10, surrounded by the outer wall portion 50 and rear wall portion 60 of the toilet body 10.

[0019] As shown in Figures 1 to 3, the outer peripheral wall 50 extends downward, continuing from the outer edge extending in the left-right direction from the front edge of the upper wall 30. The outer peripheral wall 50 covers the toilet bowl 20 and the inlet channel 41 and ascending channel 43 of the toilet drainage channel 40 from the front and left and right sides. The rear wall 60 forms the rear surface of the toilet body 10. The lower end surface 50A of the outer peripheral wall 50 and the lower end surface 60A of the rear wall 60 come into contact with the ground when the toilet body 10 is set in a usable state. The toilet body 10 is surrounded by the outer peripheral wall 50 and the rear wall 60 and opens downward. The upper end of the inner wall 70 continues below the water level WL of the toilet bowl 20, and the lower end continues to the lower part of the outer peripheral wall 50.

[0020] As shown in FIG. 1, the jet water spouting section 100 has a water-spouting nozzle 110 and a water supply pipe 120. The water-spouting nozzle 110 is attached to the front surface 142A by being inserted through a through-hole 142H formed in the front surface 142A of the recess 142 of the inflow passage 41. The water supply pipe 120 communicates with a flushing water supply source (not shown), and its downstream end is connected to the water-spouting nozzle 110. The water supply pipe 120 connected to the water-spouting nozzle 110 is positioned higher than the outer surface of the bottom surface 142B of the recess 142 of the inflow passage 41 of the toilet drainage passage 40 (hereinafter referred to as the "lowest surface X of the trap section 80"). The front surface 142A to which the water-spouting nozzle 110 is attached is inclined diagonally downward and backward, and its inner surface faces diagonally upward and backward. Therefore, flush water discharged from the water discharge nozzle 110 is discharged obliquely upward and rearward, and flows along the lower wall 43C of the ascending flow path 43 of the toilet drainage channel 40.

[0021] The sheet heater 130 is made of aluminum foil with a heater wire attached. The sheet heater 130 is attached so as to cover the downstream part of the inlet channel 41, the ascending channel 43, the water discharge nozzle 110, and the water supply pipe 120, leaving the bottom surface X of the trap section 80 exposed.

[0022] Similar to the sheet heater 130, the urethane foam sheet 150 is attached to the outside of the sheet heater 130, with the bottom surface X of the trap section 80 exposed. The urethane foam sheet 150 prevents contact between the sheet heater 130 and the moisture-proofing material 170. Because the urethane foam sheet 150 has a large number of air bubbles, sandwiching the urethane foam sheet 150 between the moisture-proofing material 170 and the sheet heater 130 can achieve the same insulating effect as forming an air layer between the moisture-proofing material 170 and the sheet heater 130.

[0023] The dew-proof material 170 is made of polystyrene foam. The dew-proof material 170 is inserted into the toilet body 10 from the lower opening of the toilet body 10 and attached by moving it from below the trap portion 80 in a direction approaching the trap portion 80. As shown in FIG. 3, the dew-proof material 170 comprises a dew-proof material main body 171 and a restriction portion 172. As shown in FIG. 1, the dew-proof material 170 is attached with the outer peripheral end surface 171A of the dew-proof material main body 171 in contact with the inner wall portion 70 of the toilet body 10 and the front outer peripheral surface of the tubular portion 45A that forms the downward flow path 45 of the toilet drainage channel 40. The dew-proof material main body 171 is located below the lower portion of the toilet bowl portion 20 that forms the trap portion 80 and below the inlet channel 41 and the ascending flow path 43 of the toilet drainage channel 40, and forms an enclosed space S with the underside of the trap portion 80. In detail, the dew-proofing material body 171 forms an enclosed space S between itself and the lower part of the toilet bowl 20, between itself and the left and right walls 41B and bottom wall 41C of the inlet passage 41 of the toilet drainage channel 40, and between itself and the left and right walls 43B and bottom wall 43C of the ascending passage 43. As described above, the sheet heater 130 and the urethane foam sheet 150 are arranged between the dew-proofing material body 171 and the left and right walls 41B and bottom wall 41C of the inlet passage 41 of the toilet drainage channel 40, and between itself and the left and right walls 43B and bottom wall 43C of the ascending passage 43.

[0024] As shown in FIG. 1, the toilet body 10 has a recess 142 in the inlet channel 41 of the toilet drainage channel 40 that is positioned lower than other portions. Therefore, as shown in FIGS. 1, 4, and 5, the dew-proof material body 171 has a downwardly recessed central portion 171B in the front-to-rear and left-to-right directions, and is formed so that the central portion 171B in the front-to-rear and left-to-right directions is lowest when the body is installed in the toilet body 10. The dew-proof material body 171 has a limiting portion 172 integrally formed with the central portion 171B in the front-to-rear and left-to-right directions. The limiting portion 172 has a rectangular parallelepiped shape that protrudes upward from the top surface of the central portion 171B in the front-to-rear and left-to-right directions of the dew-proof material body 171. In other words, the limiting portion 172 protrudes toward the trap portion 80 from the downwardly recessed central portion 171B in the front-to-rear and left-to-right directions of the dew-proof material body 171.

[0025] The upper surface 172A of the limiting portion 172 is substantially flat. The protruding height of the limiting portion 172 is approximately ¼ of the length of one side of the upper surface 172A. The area of ​​the upper surface 172A of the limiting portion 172 is greater than the area of ​​the bottom surface X of the trap portion 80. When the dew-proof material main body 171 is attached to the toilet body 10, the upper surface 172A of the limiting portion 172 comes into contact with the bottom surface X of the trap portion 80. In this case, the entire upper surface 172A of the limiting portion 172 may not contact the bottom surface X of the trap portion 80, or it may only contact it partially. The upper surface 172A of the limiting portion 172 corresponds to the contact surface that contacts the bottom surface X of the trap portion 80. The contact of the upper surface 172A of the limiting portion 172 with the bottom surface X of the trap portion 80 restricts the movement of the central portion 171B in the front-to-rear direction of the dew-proof material main body 171 toward the trap portion 80. In other words, limiting portion 172 limits the movement of dew prevention material 170 in the direction approaching trap portion 80. Limiting the movement of dew prevention material 170 in the direction approaching trap portion 80 means limiting the movement of the outer periphery of dew prevention material main body 171 in the direction approaching trap portion 80. Limiting the movement of dew prevention material 170 in the direction approaching trap portion 80 means limiting the movement of dew prevention material main body 171 in the direction approaching trap portion 80 in a direction perpendicular to upper surface 172A, which corresponds to the contact surface of limiting portion 172. Limiting the movement of dew prevention material 170 in the direction approaching trap portion 80 means limiting the movement of dew prevention material main body 171 in the direction approaching trap portion 80 in the vertical direction.

[0026] As described above, the toilet 1 of Embodiment 1 includes a toilet body 10, a dew prevention material 170, and a restricting portion 172. The toilet body 10 includes a toilet bowl 20 and a toilet drainage channel 40 that communicates with the toilet bowl 20. The dew prevention material 170 is attached to the toilet body 10, forming an enclosed space S between itself and the underside of the trap portion 80, which is formed by the toilet drainage channel 40. The restricting portion 172 is integrally formed with a central portion 170B of the dew prevention material 170 in the front-to-rear direction, which is located below the upper end of the dew prevention material 170, and its upper surface 172A contacts the lowermost surface X of the trap portion 80. The restricting portion 172 is located inside the outer periphery of the dew prevention material 170. In other words, the restricting portion 172 is located between the lowermost surface X, which is the lowermost end of the trap portion 80, and the dew prevention material 170, and restricts movement of the dew prevention material 170 in a direction approaching the trap portion 80.

[0027] In this toilet 1, a restricting portion 172 formed on the dew prevention material 170 is attached to the toilet body 10 in contact with the lowermost surface X of the trap portion 80, restricting movement of the dew prevention material 170 in a direction approaching the trap portion 80. As a result, in this toilet 1, an enclosed space S is formed between the dew prevention material 170 and the underside of the trap portion 80, and the enclosed space S can effectively perform its insulating function. Therefore, this toilet 1 can effectively prevent condensation in the trap portion 80.

[0028] The toilet 1 of embodiment 1 is equipped with a jet water spouting section 100. The water spouting nozzle 110 of the jet water spouting section 100 is attached to the front surface 142A of the recess 142 of the inlet channel 41 of the toilet drainage channel 40 that forms the trap section 80, and spouts flush water along the underside of the ascending flow path 43 of the toilet drainage channel 40. The water supply pipe 120 connected to the water spouting nozzle 110 is positioned higher than the bottom surface X of the trap section 80. For this reason, the restricting section 172 restricts the movement of the dew prevention material 170 so that it does not come into contact with the water spouting nozzle 110 and the water supply pipe 120 that make up the jet water spouting section 100. In this way, this toilet 1 can prevent force from being applied to the connection between the water spouting nozzle 110 and the water supply pipe 120 due to the dew prevention material 170 coming into contact with the water spouting nozzle 110 or the water supply pipe 120, which could cause water leakage.

[0029] The upper surface 172A of the restricting portion 172 of the toilet 1 of embodiment 1, which is the contact surface that comes into contact with the lowermost surface X of the trap portion 80, has a larger area than the lowermost surface X of the trap portion 80 and is formed to be flat, just like the lowermost surface X of the trap portion 80. In other words, the upper surface 172A of the restricting portion 172 has a shape that corresponds to the lowermost surface X of the trap portion 80. Therefore, with this toilet 1, when installing the moisture-proofing material 170 inside the toilet body 10, the installer can reliably bring the upper surface 172A of the restricting portion 172 into contact with the lowermost surface X of the trap portion 80, even if the installer cannot see the restricting portion 172.

[0030] In the toilet 1 of embodiment 1, an enclosed space S is formed between the trap section 80 and the dew-proofing material 170. Therefore, in this toilet 1, the enclosed space S functions as an air insulating layer, and together with the dew-proofing material 170, prevents condensation from forming in the trap section 80.

[0031] <Embodiment 2> As shown in Figure 6, the toilet 2 of embodiment 2 differs from embodiment 1 in the shape of the toilet body 210, the shape of the dew prevention material 370, and the positions and number of the restriction sections 372, 373, and does not include a jet water spouting section, anti-freeze member, or cushioning material. Components similar to those of embodiment 1 are given the same reference numerals, and detailed explanations will be omitted.

[0032] The toilet 2 of embodiment 2 comprises a toilet body 210 and a dew prevention material 370. The toilet body 210 has the same configuration as in embodiment 1, and comprises a toilet bowl 220, an upper wall 230, a toilet drainage channel 240, an outer wall 250, a rear wall 260, and an inner wall 270. The toilet drainage channel 240 also has the same configuration as in embodiment 1, and comprises an inlet channel 241, an ascending channel 243, and a descending channel 245. The lower part of the toilet bowl 220, the inlet channel 241, and the ascending channel 243 form a trap section 280 where flush water accumulates below the pooled water level WL.

[0033] The inlet channel 241 and the ascending channel 243 are formed by a continuous tubular portion 240A. The inlet channel 241 extends downward from the lower end opening 223 of the toilet bowl 220, slanting diagonally backward. The inlet channel 241 curves in its downstream portion, changing the downward-facing channel into a rearward-facing channel. The upstream end of the ascending channel 243 is connected to the downstream end of the inlet channel 241. A boundary B1 between the ascending channel 243 and the inlet channel 241 forms a channel facing rearward. The ascending channel 243 curves in its upstream portion and extends upward, slanting diagonally backward. The ascending channel 243 curves in its downstream portion, turning the channel that faces upward and diagonally rearward slightly backward. The upstream end of the descending channel 245 is connected to the downstream end of the ascending channel 243. A boundary B2 between the descending channel 245 and the ascending channel 243 forms a channel facing diagonally upward and rearward. The descending flow path 245 has a wide upstream section and a downstream end that extends substantially vertically downward. The downstream end of the descending flow path 245 is formed by a substantially cylindrical tube section 245A, and is located inside the toilet body 210, surrounded by the outer wall section 250 and rear wall section 260 of the toilet body 210.

[0034] The dew prevention material 370 is made of polystyrene foam. The dew prevention material 370 is inserted into the toilet body 210 from the lower opening of the toilet body 210 and attached by moving it from below the trap portion 280 in a direction approaching the trap portion 280. The dew prevention material 370 comprises a dew prevention material main body 371 and restriction portions 372, 373. The dew prevention material main body 371 is attached with its outer peripheral end surface 371A in contact with the inner wall portion 270 of the toilet body 210 and the front outer peripheral surface of the tubular portion 245A that forms the downward flow path 245 of the toilet drainage channel 240. The dew prevention material main body 371 is located below the lower portion of the toilet bowl portion 220 that forms the trap portion 280 and below the inlet path 241 and the upward flow path 243 of the toilet drainage channel 240, and forms an enclosed space S with the underside of the trap portion 280.

[0035] When the dew prevention material main body 371 is attached to the toilet body 210, two restricting portions 372, 373 are integrally formed which come into contact with the lower surface of the intermediate portion of the inlet passage 241 and the lower surface of the intermediate portion of the ascending passage 243, which are below the vertical center of the trap portion 280. The upper surfaces 372A, 373A of each restricting portion 372, 373 come into contact with the lower surface of the intermediate portion of the inlet passage 241 of the trap portion 280 and the lower surface of the intermediate portion of the ascending passage 243. In this case, the upper surfaces 372A, 373A of each restricting portion 372, 373 may not come into contact entirely with the lower surface of the intermediate portion of the inlet passage 241 of the trap portion 280 and the lower surface of the intermediate portion of the ascending passage 243, or may come into partial contact.

[0036] The upper surfaces 372A, 373A of the limiting portions 372, 373 correspond to the contact surfaces that come into contact with the lower surface of the trap portion 280. The upper surfaces 372A, 373A of the limiting portions 372, 373 are curved surfaces that correspond to the curvature of the lower surfaces of the inlet passage 241 and the ascending passage 243. The upper surfaces 372A, 373A of the limiting portions 372, 373 come into contact with the lower surface of the middle part of the inlet passage 241 of the trap portion 280 and the lower surface of the middle part of the ascending passage 243, thereby restricting the movement of the dew prevention material main body 371 in the direction approaching the trap portion 280. In other words, the limiting portions 372, 373 restrict the movement of the dew prevention material 370 in the direction approaching the trap portion 280. Restricting the movement of the dew prevention material 370 in the direction approaching the trap portion 280 means restricting the movement of the outer periphery of the dew prevention material main body 371 in the direction approaching the trap portion 280. Furthermore, restricting the movement of the dew prevention material 370 in the direction approaching the trap portion 280 means restricting the movement of the dew prevention material 370 in the direction approaching the trap portion 280 in a direction perpendicular to the upper surfaces 372A, 373A that correspond to the contact surfaces of the limiting portions 372, 373. Furthermore, restricting the movement of the dew prevention material 370 in the direction approaching the trap portion 280 means restricting the movement of the dew prevention material main body 371 in the direction approaching the trap portion 280 in the vertical direction.

[0037] As explained above, the toilet 2 of Embodiment 2 comprises a toilet body 210, a dew prevention material 370, and two restriction portions 372, 373. The toilet body 210 has a toilet bowl 220 and a toilet drainage channel 240 that communicates with the toilet bowl 220. The dew prevention material 370 is attached to the toilet body 210, forming an enclosed space S between itself and the underside of a trap portion 280 formed by the toilet drainage channel 240. The restriction portions 372, 373 are formed integrally with the dew prevention material 370 at two locations located below the upper end of the dew prevention material 370, with upper surfaces 372A, 373A in contact with the underside of the middle portion of the inlet channel 241 of the trap portion 280 and the underside of the middle portion of the ascending flow path 243. In other words, each restricting section 372, 373 is provided between the underside of the trap section 280, which is located below the center of the trap section 280 in the vertical direction, and the moisture-proof material 370, and restricts the movement of the moisture-proof material 370 in the direction approaching the trap section 280.

[0038] In this toilet 2, restricting sections 372, 373 formed on the dew prevention material 370 contact the underside of the trap section 280 and are attached inside the toilet body 210, restricting movement of the dew prevention material 370 in a direction approaching the trap section 280. As a result, in this toilet 2, an enclosed space S is formed between the dew prevention material 370 and the underside of the trap section 280, and the enclosed space S can effectively perform its insulating function. Therefore, this toilet 2 can effectively prevent condensation on the trap section 280.

[0039] In the toilet 2 of embodiment 2, the upper surfaces 372A, 373A of each restricting portion 372, 373, which are the contact surfaces that come into contact with the underside of the trap portion 280, are formed as curved surfaces that correspond to the curvature of the undersides of the inlet channel 241 and the ascending channel 243. In other words, the upper surfaces 372A, 373A of each restricting portion 372, 373 have a shape that corresponds to the shape of the underside of the trap portion 280. For this reason, when installing the moisture prevention material 370 inside the toilet body 210 of this toilet 2, the installer cannot see the restricting portions 372A, 373, but can reliably bring the upper surfaces 372A, 373A of each restricting portion 372, 373 into contact with the underside of the trap portion 280.

[0040] In the toilet 2 of the second embodiment, an enclosed space S is formed between the trap section 280 and the dew prevention material 370. Therefore, in this toilet 2, the enclosed space S functions as an air insulating layer, and together with the dew prevention material 370, prevents condensation from forming in the trap section 80.

[0041] The present disclosure is not limited to the first and second embodiments described above with reference to the drawings, and the following embodiments are also included within the technical scope. (1) In the first and second embodiments, the limiting portion is provided integrally with the moisture-proof material. However, the present invention is not limited to this, and the limiting portion does not have to be integral with the moisture-proof material, and may be provided in the trap portion. (2) In the first embodiment, the toilet bowl is provided with a jet water spouting section. However, the present invention is not limited to this, and the toilet bowl does not have to be provided with a jet water spouting section. (3) In the first embodiment, the toilet bowl is provided with an anti-freeze member and a buffer material. However, the present invention is not limited to this, and the toilet bowl does not have to be provided with an anti-freeze member and a buffer material. (4) The shape and material of the moisture-proof material are not limited to those of the first and second embodiments, as long as it forms a space between itself and the underside of the trap portion and has heat insulating properties. (5) The number of restricting members may be three or more. (6) The shape of the restricting member can be changed as appropriate. (7) In the first embodiment, the restricting portion is in contact with the lowermost surface of the trap portion. However, this is not limiting, and the restricting portion may be in contact with the trap portion below the water supply pipe connected to the water discharge nozzle. [Explanation of symbols]

[0042] 1,2... Toilet bowl, 10,210... Toilet bowl body, 20,220... Toilet bowl portion, 40,240... Toilet drainage channel, 80,280... Trap portion, 100... Jet water discharge portion, 170,370... Dew prevention material, 171,371... Dew prevention material body, 172,372,373... Restriction portion, 172A,372A,373A... Upper surface (contact surface) of restriction portion

Claims

1. a toilet body having a toilet bowl and a toilet drainage channel communicating with the toilet bowl; a dew-proof material provided below a trap portion formed by the toilet drainage channel; A protruding portion protruding upward from the upper surface of the dew-proof material; It is equipped with The toilet body has a contact portion that contacts the protrusion, A toilet in which the lower surface of the contact portion and the upper surface of the protrusion contact below the vertical center of the trap portion.

2. The toilet according to claim 1 , wherein the protrusion restricts movement of the moisture-proof material in a direction vertically approaching the trap portion.

3. A toilet described in any one of claims 1 and 2, wherein the underside of the contact portion is approximately flat.

4. The toilet according to any one of claims 1 to 3, wherein the upper surface of the protrusion is substantially flat.

5. The toilet according to any one of claims 1 to 4, wherein the protrusion is provided inside the outer periphery of the moisture-proof material.

6. Equipped with a jet water discharge section, The toilet according to any one of claims 1 to 5, wherein the dew-proofing material is provided below the jet water spouting portion.

7. The toilet body has a through-hole through which a water spouting nozzle of the jet water spouting section is inserted, The toilet according to claim 6, wherein the lower surface of the contact portion is located below the through-hole.

8. 8. The toilet according to claim 1, wherein the lower surface of the contact portion and the upper surface of the protrusion extend in a substantially horizontal plane.

9. A moisture-proofing material attached to a toilet body having a toilet bowl and a toilet drainage channel communicating with the toilet bowl, A dew-proof material body attached below a trap portion formed by the toilet drainage channel; A protruding portion protruding upward from the upper surface of the dew-proof material body; It is equipped with The upper surface of the protrusion contacts the lower surface of the contact portion of the toilet body below the vertical center of the trap portion.

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