Water closet

Abstract

To provide a water closet capable of contributing to a low silhouette by reducing a volume required for a moisture condensation proof function.SOLUTION: A water closet according to an embodiment comprises a toilet bowl body and a functional part. The toilet bowl body has a bowl part that receives dirt and a drain trap pipeline that is connected to the bowl part and discharges the dirt in the bowl part. The functional part is provided behind the bowl part and has a function of controlling supply of wash water to the bowl part. The functional part further includes a tank that stores the wash water. At least one surface of the tank is adhered to the toilet bowl body. A moisture condensation proof material is provided on an outer covering of the tank except for the adhered surface.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION The disclosed embodiments relate to a flush toilet. [Background technology]

[0002] Previously, technology for a separable moisture-proofing material for the tank of a flush toilet has been disclosed (see Patent Document 1). Also, technology for preventing condensation in the tank by providing a space in the exterior of the tank has been disclosed (see Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-190248 [Patent Document 2] Japanese Patent Publication No. 2022-154508 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for flush toilets that have a reduced product height (low silhouette) to improve design, and to achieve this demand, functional components must be accommodated in a limited storage space. However, storage space is taken up by the space used to arrange the components for the condensation prevention function and the clearance between the tank and the toilet body. Therefore, there was a need for a flush toilet that could contribute to a low silhouette by reducing the volume required for the condensation prevention function.

[0005] One aspect of the embodiment has been made in light of the above, and aims to provide a flush toilet that can contribute to a low silhouette by reducing the volume required for the anti-condensation function. [Means for solving the problem]

[0006] A flush toilet according to one embodiment comprises a toilet body having a bowl portion for receiving waste and a drain trap pipe connected to the bowl portion for discharging waste within the bowl portion, and a functional portion provided behind the bowl portion and having the function of controlling the supply of flushing water to the bowl portion, the functional portion comprising a tank for storing the flushing water, at least one surface of the tank being bonded to the toilet body, and the exterior of the tank other than the bonded surface being provided with moisture-proof material to protect the tank from moisture.

[0007] Because it is possible to reduce the volume required for the anti-condensation function of a flush toilet, the tank can be made smaller and the water storage area can be increased to the area that was previously allocated for anti-condensation material.This allows the tank to be made smaller, and by lowering the tank top by the amount of the increased water storage area, flush toilets can contribute to a low silhouette.

[0008] The toilet body also includes a double wall portion that defines an internal space between the double wall portions, and the adhesive surface is set at least on the double wall portion.

[0009] Because the double wall of a flush toilet has insulating properties, the adhesive surfaces have a moisture-proof function. Furthermore, even if condensation does occur in the interior space, the flush toilet can prevent the condensed water from leaking from the interior space to the outside.

[0010] The toilet body also has a single wall portion, and the adhesive surface is set on at least the single wall portion.

[0011] In a flush toilet, the adhesive members and cushioning materials on the adhesive surfaces have heat insulating properties, making it possible for the adhesive surfaces to prevent moisture buildup.

[0012] The toilet body also has a skirt portion formed outside the respective side surfaces of the bowl portion and the drain trap pipe, and the adhesive surface is set on at least the inner surface of the skirt portion.

[0013] The skirt portion forms the outer shell of the toilet body and therefore includes the highest point of the toilet body. Therefore, in a flush toilet, the skirt portion includes the entire tank height, so the entire tank can be installed.

[0014] The adhesive surface is set at least on a bottom surface portion extending inward from the skirt portion.

[0015] In a flush toilet, the inner surface of the skirt and the bottom surface extending inward from the skirt can be used as contact surfaces, which allows the tank and the toilet body to be bonded together regardless of manufacturing errors in the toilet body.

[0016] Furthermore, the moisture-proof material is provided so as to include not only the tank but also the bowl portion and the storage portion of the drain trap pipe line.

[0017] In a flush toilet, the anti-condensation material for the tank can also serve as the anti-condensation material for the bowl portion and the storage portion of the drain trap pipe line. [Effects of the Invention]

[0018] According to one aspect of the embodiment, the volume required for the moisture-proofing function can be reduced, thereby contributing to a low silhouette. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic perspective view (part 1) showing a flush toilet according to an embodiment. [Figure 2] FIG. 2 is a schematic perspective view (part 2) showing a flush toilet according to an embodiment. [Figure 3] FIG. 3 is a schematic plan view showing a flush toilet according to an embodiment. [Figure 4] FIG. 4 is a schematic cross-sectional view of the flush toilet according to the embodiment taken along line IV-IV shown in FIG. [Figure 5] FIG. 5 is a schematic cross-sectional view of the flush toilet VV shown in FIG. 3 according to the embodiment. [Figure 6]FIG. 6 is a schematic cross-sectional view of the flush toilet VV shown in FIG. 3 according to a modified example. [Figure 7] FIG. 7 is a schematic cross-sectional view of the flush toilet VV shown in FIG. 3 according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0020] Embodiments of the flush toilet disclosed in this application will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below.

[0021] <Configuration of a flush toilet> First, the configuration of a flush toilet 1 according to an embodiment will be explained with reference to Figs. 1 to 5. Figs. 1 and 2 are schematic perspective views of a flush toilet 1 according to an embodiment. Fig. 1 shows the flush toilet 1 from diagonally above the front, and Fig. 2 shows the flush toilet 1 from diagonally above the rear. Fig. 3 is a schematic plan view of a flush toilet 1 according to an embodiment. Fig. 4 is a schematic cross-sectional view of the flush toilet 1 according to an embodiment taken along line IV-IV shown in Fig. 3. Fig. 5 is a schematic cross-sectional view of the flush toilet 1 according to an embodiment taken along line VV shown in Fig. 3.

[0022] Each figure also shows a three-dimensional Cartesian coordinate system including a Z-axis, with the positive direction being the upward vertical direction (upward). For ease of explanation, the positive direction of the X-axis will be defined as the left, the negative direction of the X-axis as the right, the positive direction of the Y-axis as the forward direction, and the negative direction of the Y-axis as the backward direction, with the X-axis direction being referred to as the left-right direction, the Y-axis as the front-back direction, and the Z-axis as the up-down direction.

[0023] As shown in Figure 1, the flush toilet 1 is a so-called floor-standing toilet that is installed on the floor of a toilet room. The flush toilet 1 is also a so-called full-skirt toilet, in which the outer periphery of the toilet body 2 is covered by a skirt part 24, which will be described later. The flush toilet 1 may also be, for example, a wash-down toilet, a siphon toilet, or any other type of toilet.

[0024] The flush toilet 1 comprises a toilet body 2 and a functional part 4.

[0025] The toilet body 2 is made of ceramic and comprises a bowl portion 21, a rim portion 22, a water outlet portion (not shown), a water channel (not shown), a storage portion 23, a drain trap pipe 3, a skirt portion 24, and a partition plate 25.

[0026] Bowl portion 21 is a portion that receives waste and is formed in a bowl shape. Rim portion 22 is provided on the upper edge of bowl portion 21. Rim portion 22 is formed in an overhanging shape toward the inside of bowl portion 21 to prevent flush water from splashing out of bowl portion 21.

[0027] The water discharge section discharges flush water stored in a tank 41, which will be described later, from a water discharge port (not shown) into the bowl section 21. The water conduit extends forward, for example, from a flush water supply port (not shown) in the toilet body 2, and is connected to a rim water passage (not shown) in the rim section 22.

[0028] The storage section 23 is formed behind the bowl section 21, and is a portion (space) with an open top at the rear of the bowl section 21. The storage section 23 stores the functional section 4.

[0029] The functional section 4 includes a tank 41 and controls the supply of cleaning water to the bowl section 21. The functional section 4 includes a valve unit for controlling the water supply, a pump for pressurization, and the like.

[0030] Tank 41 is made of resin and is housed in housing 23 behind bowl 21. Tank 41 stores flush water that is supplied to bowl 21 during toilet flushing.

[0031] Drain trap pipe 3 is a section that discharges waste from within bowl portion 21, and is a pipe that connects bowl portion 21 to external piping (not shown) of toilet body 2. Drain trap pipe 3 comprises storage portion 31 and drain portion 32. Storage portion 31 stores a portion of the flush water supplied to toilet body 2 (the stored water is referred to as "stored water"), and stored water W1 functions as a seal, preventing odors and the like from flowing back from drain trap pipe 3 toward bowl portion 21. Note that storage portion 21a, in which stored water W1 is stored, is also formed below bowl portion 21. Storage portions 21a, 31 are provided with moisture-proof material 44, such as polyethylene bead foam.

[0032] The upstream side of the storage section 31 is connected to the bowl section 21. The upstream side of the drain section 32 is connected to the storage section 31, and the downstream side is connected to an external pipe (not shown).

[0033] The reservoir 31 includes an inlet pipe 311 and an uprising pipe 312. The inlet pipe 311 forms the upstream side of the reservoir 31 and extends from the bowl portion 21. The uprising pipe 312 forms the downstream side of the reservoir 31 and extends while sloping upward toward the rear.

[0034] The drainage section 32 includes a bent section 321 and a downcomer pipe 322. The bent section 321 forms the upstream side of the drainage section 32 and is provided at the upper end of the upcomer pipe 312. The bent section 321 rises and then descends as it extends rearward. The downcomer pipe 322 forms the downstream side of the drainage section 32 and descends rearward to be connected to external piping (not shown).

[0035] The skirt portion 24 is provided outside the sides of the bowl portion 21 and the drain trap pipe 3 so as to cover at least the front and both left and right sides of the bowl portion 21. The skirt portion 24 is provided integrally with the toilet body 2.

[0036] 5, the skirt portion 24 includes an outer wall portion 24a that forms the outer surface of the skirt portion 24, and an inner wall portion 24b that is provided on the inside of the outer wall portion 24a. The skirt portion 24 includes a double wall portion A formed by the outer wall portion 24a and the inner wall portion 24b. The double wall portion A forms an internal space B between the outer wall portion 24a and the inner wall portion 24b.

[0037] The skirt portion 24 has a bottom portion 26a that extends inward from the inner wall portion 24b below the tank 41. The bottom portion 26a is connected to a side portion 26b that extends downward from the side of the drain trap pipe 3. The partition plate 25 shown in Figure 2 forms the rear surface of the toilet body 2. The front and left and right sides of the toilet body 2 are covered by the skirt portion 24, and the rear is covered by the partition plate 25.

[0038] Next, the tank 41 will be described in detail with reference to Figures 5 to 7. Figures 6 to 7 are schematic cross-sectional views of the VV shown in Figure 3 of a flush toilet 1 according to a modified example.

[0039] The tank 41 includes a tank body 41a and a tank lid 41b that covers the upper surface of the tank body 41a.

[0040] As shown in FIG. 5, the tank body 41a has a front surface 41a1, a rear surface (not shown), an outer surface 41a2, an inner surface 41a3, and a bottom surface 41a4. The front surface 41a1 and the rear surface are configured so that their widths in the left-right direction decrease downward. The front surface 41a1 and the rear surface are located opposite each other. The outer surface 41a2 is a surface that connects the front surface 41a1 and the rear surface on the outer side (the skirt portion 24 side). The inner surface 41a3 is a surface that connects the front surface 41a1 and the rear surface on the inner side (the drain trap pipe 3 side). The outer surface 41a2 and the inner surface 41a3 are located opposite each other. The bottom surface 41a4 is a surface that connects the front surface 41a1, the rear surface, the outer surface 41a2, and the inner surface 41a3 at the lower end of the tank 41.

[0041] The inner surface 41a3 has a certain distance (clearance) from the side surface portion 26b and extends along the side surface portion 26b. The lower surface 41a4 has a certain distance from the bottom surface portion 26a and extends along the bottom surface portion 26a.

[0042] At least one surface of the tank 41 is bonded to the toilet body 2. For example, the outer surface 41a2 of the tank 41 is bonded to the inner wall portion 24b of the skirt portion 24 (the inner surface of the skirt portion 24). For example, an adhesive surface C is formed between the outer surface 41a2 and the inner wall portion 24b, and the outer surface 41a2 and the inner wall portion 24b are bonded together with butyl rubber at the adhesive surface C. For example, foamed EPDM (ethylene propylene rubber) may be provided between the outer surface 41a2 and the inner wall portion 24b as a cushioning material for the adhesive surface C.

[0043] The exterior of the tank 41, other than the adhesive surface C, is provided with a moisture-proof material D that protects the tank 41 from moisture. For example, the tank 41 is provided with moisture-proof material D such as polyethylene bead foam on the front surface 41a1, rear surface, inner surface 41a3, and bottom surface 41a4. This prevents condensation from forming on the exterior of the tank 41, other than the adhesive surface C.

[0044] The portion where the double wall portion A is formed is not particularly limited, and for example, the double wall portion A may be formed on the side surface portion 26b. When the double wall portion A of the tank 41 is formed on the side surface portion 26b, the inner surface 41a3 is adhered to the side surface portion 26b. In this case, the tank 41 is provided with moisture-proof material D on the front surface 41a1, the rear surface, the outer surface 41a2, and the bottom surface 41a4.

[0045] 6, the tank 41 may have the adhesive surface C set on the bottom surface 26a. For example, the outer surface 41a2 of the tank 41 is adhered to the inner wall portion 24b, and the lower surface 41a4 is adhered to the bottom surface 26a. In this case, the tank 41 has the moisture-proof material D provided on the front surface 41a1, the rear surface, and the inner surface 41a3.

[0046] As shown in FIG. 7, the dew-proofing material D may be provided not only in the tank 41 but also in the storage section 21a of the bowl section 21 (see FIG. 2) and the storage section 31 of the drain trap pipe line 3. For example, the dew-proofing material D provided on the inner surface 41a3 and the dew-proofing material D covering the underside of the storage sections 21a, 31 are formed integrally. In this case, the rear of the toilet body 2 is configured not to be covered by the skirt section 24 and the partition plate 25, and the tank 41 provided with the dew-proofing material D is attached by sliding it from the rear of the toilet body 2.

[0047] Although the above describes a configuration in which the skirt portion 24 has a double wall portion A, the present invention is not limited to this and, for example, the skirt portion 24 may have a single wall portion (not shown). The single wall portion does not form the internal space B and is composed only of a single wall portion that forms the outer surface of the skirt portion 24. For example, the outer surface 41a2 of the tank 41 is bonded to the single wall portion. In this case, the tank 41 is provided with moisture-proof material D on the front surface 41a1, rear surface, inner surface 41a3, and bottom surface 41a4.

[0048] As described above, a flush toilet 1 according to one aspect of the embodiment comprises a toilet body 2 having a bowl portion 21 for receiving waste and a drain trap pipe 3 connected to the bowl portion 21 for discharging waste within the bowl portion 21, and a functional portion 4 provided behind the bowl portion 21 and having the function of controlling the supply of flushing water to the bowl portion 21, the functional portion 4 comprising a tank 41 for storing flushing water, at least one surface of the tank 41 being bonded to the toilet body 2, and the exterior of the tank 41 other than the bonded surface C being provided with anti-moisture material D for protecting the tank 41 from moisture.

[0049] Because the flush toilet 1 can reduce the volume required for the anti-condensation function, it is possible to reduce the size of the tank 41 and increase the water storage area to the area that was previously allocated to anti-condensation material D. This allows the flush toilet 1 to reduce the size of the tank 41, and by lowering the top surface of the tank 41 (tank lid 41b) by the amount of the increased water storage area, it can contribute to a low silhouette.

[0050] Furthermore, in the past, to take into account variations in the dimensions of the toilet body 2 (ceramic), a clearance was provided to prevent interference between the tank 41 and the toilet body 2. The flush toilet 1 maintains an anti-condensation function to make effective use of limited storage space, while providing clearance between the tank 41 and the side surface 26b, for example, making it possible to create a storage structure for the tank 41 that is not affected by variations in the dimensions of the toilet body 2.

[0051] The toilet body 2 also has a double wall portion A that forms an internal space B between the double wall portions, and the adhesive surface C is set at least on the double wall portion A.

[0052] Because the double wall portion A of the flush toilet 1 has heat insulating properties, it has anti-condensation functionality at the adhesive surface C. Furthermore, even if condensation occurs in the interior space B, the flush toilet 1 can prevent the condensed water from leaking from the interior space B to the outside.

[0053] The toilet body 2 also has a single wall portion, and the adhesive surface C is set at least on the single wall portion.

[0054] In the flush toilet 1, the adhesive material (butyl rubber) and buffer material (foamed EPDM) at adhesive surface C have heat insulating properties, so adhesive surface C can prevent moisture buildup.

[0055] The toilet body 2 also has a skirt portion 24 formed outside the respective side surfaces of the bowl portion 21 and the drain trap pipe 3, and the adhesive surface C is set on at least the inner wall portion 24b of the skirt portion 24.

[0056] The skirt portion 24 forms the outer shell of the toilet body 2, and therefore includes the highest point of the toilet body 2. Therefore, since the skirt portion 24 includes the entire tank 41 in the height direction, the entire tank 41 can be attached to the flush toilet 1.

[0057] The adhesive surface C is set at least on the bottom surface portion 26a extending inward from the skirt portion 24.

[0058] In the flush toilet 1, the contact surfaces can be the inner wall portion 24b of the skirt portion 24 and the bottom surface portion 26a extending inward from said skirt portion 24. This allows the tank 41 and the toilet body 2 to be bonded together regardless of manufacturing errors in the toilet body 2 (ceramic).

[0059] Moreover, the dew prevention material D is provided so as to include not only the tank 41 but also the storage portion 21a of the bowl portion 21 and the storage portion 31 of the drain trap pipe line 3.

[0060] In the flush toilet 1, the dew prevention material D of the tank 41 can also serve as the dew prevention material D for the storage section 21a of the bowl section 21 and the storage section 31 of the drain trap pipe 3.

[0061] Further advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

[0062] <Additional Notes> (1) a toilet body having a bowl portion for receiving waste and a drain trap pipe line connected to the bowl portion for discharging waste within the bowl portion; a functional section provided behind the bowl section and having a function of controlling the supply of cleaning water to the bowl section, The functional unit includes a tank that stores the cleaning water, At least one surface of the tank is bonded to the toilet body, A flush toilet in which moisture-proofing material is provided on the exterior of the tank other than the adhesive surface to protect the tank from moisture. (2) The toilet body has a double wall portion that forms an internal space between the double wall portions, The flush toilet according to (1), wherein the adhesive surface is set at least on the double wall portion. (3) The toilet body has a single wall portion, The flush toilet according to (1), wherein the adhesive surface is set on at least the single wall portion. (4) The toilet body includes a skirt portion formed outside the side surfaces of the bowl portion and the drain trap pipe line, The flush toilet according to any one of (1) to (3), wherein the adhesive surface is set on at least the inner surface of the skirt portion. (5) The flush toilet according to (4), wherein the adhesive surface is set on at least the bottom surface portion that extends inward from the skirt portion. (6) A flush toilet as set forth in any one of (1) to (5), wherein the moisture-proofing material is provided so as to include not only the tank, but also the bowl portion and the storage portion of the drain trap pipe line. [Explanation of symbols]

[0063] 1 flush toilet 2 Toilet body 3 Drain trap pipe 4 Functional Section 21 Bowl section 21a Storage section 24 Skirt Club 26a Bottom part 31 Storage section 41 Tank A Double wall section B Interior space C Adhesive surface D Anti-fouling material

Claims

1. a toilet body having a bowl portion for receiving waste and a drain trap pipe line connected to the bowl portion for discharging waste within the bowl portion; a functional section provided behind the bowl section and having a function of controlling the supply of cleaning water to the bowl section, The functional unit includes a tank that stores the cleaning water, At least one surface of the tank is bonded to the toilet body, A flush toilet in which moisture-proofing material is provided on the exterior of the tank other than the adhesive surface to protect the tank from moisture.

2. The toilet body has a double wall portion that forms an internal space between the double wall portions, The flush toilet according to claim 1, wherein the adhesive surface is set at least in the double wall portion.

3. The toilet body has a single wall portion, The flush toilet according to claim 1, wherein the adhesive surface is set on at least the single wall portion.

4. The toilet body includes a skirt portion formed outside the side surfaces of the bowl portion and the drain trap pipe line, The flush toilet according to claim 1, wherein the adhesive surface is set on at least the inner surface of the skirt portion.

5. The flush toilet according to claim 4, wherein the adhesive surface is set on at least the bottom surface portion that extends inward from the skirt portion.

6. 6. The flush toilet according to claim 1, wherein the moisture-proofing material is provided not only on the tank but also on the bowl portion and the storage portion of the drain trap pipe.

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