Water-washable toilet

Abstract

The present invention aims to provide a flush toilet that allows for a larger space inside the toilet bowl and enables the tank device to be stably fixed to the toilet bowl. [Solution] The present invention relates to a wall-mounted flush toilet 1, comprising: a toilet body 2 having a bowl portion 12, a drain trap pipe 14, and a skirt portion 16 surrounding the bowl portion 12 and the drain trap pipe 14 from the outside; a tank device 4 disposed in the space S below the bowl portion 12 inside the toilet body 2 for storing flushing water supplied to the toilet body 2; and a fixing member 50 for fixing the tank device 4 to the toilet body 2. The toilet body 2 comprises a hollow portion 74 whose interior is formed by a closed space, and a first tank fixing portion 64, a second tank fixing portion 66, and a third tank fixing portion 68 to which the tank device 4 is fixed by the fixing member 50, with each tank fixing portion being provided in the hollow portion 74.

Description

Technical Field

[0004] ,

[0001] The present invention relates to a flush toilet, and particularly to a wall-mounted flush toilet.

Background Art

[0002] Conventionally, as described in Patent Documents 1 to 4, there is known a flush toilet in which a water storage tank is housed in a space below the bowl portion inside the toilet body. In the conventional flush toilet described in Patent Document 1, it is a wall-mounted flush toilet, and the water storage tank is fixed to the wall surface together with the toilet body. Further, in the conventional flush toilets described in Patent Documents 2 and 3, they are wall-mounted flush toilets and floor-standing flush toilets, and the water storage tank is fixed to the toilet body by brackets. <00​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​However, in conventional flush toilets such as those described in Patent Document 1, the water storage tank is fixed to the wall along with the toilet bowl, which presents a problem in that the water storage tank cannot be removed during maintenance without removing the toilet bowl. In contrast, in conventional flush toilets as described in Patent Documents 2 and 3, the water storage tank is fixed to the toilet body by a bracket, so the water storage tank can be removed during maintenance without removing the toilet body. However, because a bracket is used, there is a problem that the space for housing the water storage tank inside the toilet body becomes narrower. On the other hand, in conventional flush toilets such as those described in Patent Document 4, the water tank is fixed to a protrusion without the use of a bracket, which allows for a larger space to accommodate the water tank inside the toilet bowl. However, because the water tank is fixed to a protrusion that extends laterally from the inner wall of the toilet bowl, there is a problem that the protrusion may be damaged by the weight of the water tank.

[0005] Therefore, the present invention has been made to solve the above-mentioned problems, and aims to provide a flush toilet that can widen the space inside the toilet bowl and stably fix the tank device to the toilet bowl. [Means for solving the problem]

[0006] To solve the above-mentioned problems, the present invention provides a wall-mounted flush toilet, comprising: a toilet body having a bowl portion for receiving waste, a drain trap pipe connected below the bowl portion for discharging waste, and a skirt portion surrounding the bowl portion and the drain trap pipe from the outside; a tank device disposed in the space below the bowl portion inside the toilet body for storing flushing water supplied to the toilet body; and a fixing member for fixing the tank device to the toilet body, wherein the toilet body comprises a hollow portion whose interior is formed by a closed space and a tank fixing portion to which the tank device is fixed by the fixing member, and the tank fixing portion is provided in the hollow portion. In the present invention configured as described above, the toilet bowl body comprises a hollow section formed by a closed space inside, and a tank fixing section to which the tank device is fixed by a fixing member. Since the tank fixing section is provided in the hollow section, the space inside the toilet bowl body can be made wider, and the tank device can be stably fixed to the toilet bowl body.

[0007] In the present invention, preferably, the tank fixing portion is provided in the skirt portion. In this configuration of the present invention, the tank fixing part is provided in the skirt part, which allows for a wider space inside the toilet bowl body.

[0008] Furthermore, in the present invention, preferably, a recessed portion is formed on the bottom surface of the toilet bowl body, and the tank fixing portion is provided on the recessed portion. In the present invention configured in this way, a recessed portion is formed on the bottom surface of the toilet bowl body, and the tank fixing portion is provided on the recessed portion, so that the tank device can be stably fixed to the toilet bowl body.

[0009] In the present invention, preferably, the toilet bowl body is provided with a wall fixing part for fixing it to a wall surface, and the tank fixing part is provided on the wall fixing part. In the present invention configured in this way, the toilet bowl body is provided with a wall-fixing part for fixing it to the wall, and the tank fixing part is provided on the wall-fixing part, so that the space inside the toilet bowl body can be made wider.

[0010] Furthermore, in the present invention, preferably, three or more tank fixing parts are provided, and the tank fixing parts are arranged such that, in a bottom view, the center of gravity of the tank device is located inside the imaginary line connecting the tank fixing parts. In the present invention configured in this way, the tank fixing parts are provided in the form of three or more tank fixing parts, and the tank fixing parts are arranged such that, when viewed from below, the center of gravity of the tank device is located inside the imaginary line connecting the tank fixing parts, so that the tank device can be stably fixed to the toilet body.

[0011] In the present invention, preferably, the tank device is composed of an upper tank member and a lower tank member joined to the upper tank member, and the lower tank member is fixed to the tank fixing part. In the present invention configured in this way, the tank device is composed of an upper tank member and a lower tank member that is joined to the upper tank member, and since the lower tank member is fixed to the tank fixing part, the upper tank member and the lower tank member can be joined more stably compared to the case where the upper tank member is fixed to the tank fixing part.

[0012] Furthermore, in the present invention, preferably, a functional device for supplying flushing water to the toilet bowl body, a base plate supporting the functional device, and a fixing member for fixing the base plate to the toilet bowl body, wherein the toilet bowl body has a fixing portion to which the base plate is fixed by the fixing member, and the base plate fixing portion is provided in a hollow part. In the present invention configured as described above, the toilet includes a functional device for supplying flushing water to the toilet bowl body, a base plate for supporting the functional device, and a fixing member for fixing the base plate to the toilet bowl body. The toilet bowl body is provided with a base plate fixing section to which the base plate is fixed by the fixing member, and the base plate fixing section is provided in a hollow section, which allows for a wider space inside the toilet bowl body and enables the base plate to be stably fixed to the toilet bowl body.

[0013] In the present invention, preferably, the base plate fixing portion is provided in the skirt portion. In the present invention configured in this way, the base plate fixing portion is provided in the skirt portion, which allows for a wider space inside the toilet bowl body.

[0014] Furthermore, in the present invention, preferably, a recessed portion is formed on the bottom surface of the toilet bowl body, and the base plate fixing portion is provided on the recessed portion. In the present invention configured as described above, a stepped portion that is recessed upward is formed on the bottom surface of the toilet body, and the base plate fixing portion is provided on the stepped portion. Therefore, the base plate can be stably fixed to the toilet body.

[0015] In the present invention, preferably, a wall fixing portion for fixing the toilet body to the wall surface is provided, and the base plate fixing portion is provided on the wall fixing portion. In the present invention configured as described above, a wall fixing portion for fixing the toilet body to the wall surface is provided, and the base plate fixing portion is provided on the wall fixing portion. Therefore, the space inside the toilet body can be widened.

[0016] Further, in the present invention, preferably, three or more base plate fixing portions are provided, and in a bottom view, the base plate fixing portions are arranged such that the center of gravity of the base plate is located inside the virtual line connecting the base plate fixing portions. In the present invention configured as described above, three or more base plate fixing portions are provided, and in a bottom view, the base plate fixing portions are arranged such that the center of gravity of the base plate is located inside the virtual line connecting the base plate fixing portions. Therefore, the base plate can be stably fixed to the toilet body.

[0017] In the present invention, preferably, at least one of the tank fixing portion and the base plate fixing portion is formed in common. In the present invention configured as described above, at least one of the tank fixing portion and the base plate fixing portion is formed in common. Therefore, the space inside the toilet body can be widened.

[0018] Further, in the present invention, preferably, the fixing portion of the tank closest to the center of gravity of the tank device is formed separately from the base plate fixing portion. In the present invention configured as described above, the fixing portion of the tank closest to the center of gravity of the tank device is formed separately from the base plate fixing portion. Therefore, the tank device can be stably fixed to the toilet body.

[0019] In the present invention, preferably, in the base plate fixing portion, the fixing portion closest to the center of gravity of the base plate is formed separately from the tank fixing portion. In the present invention configured as described above, since the fixing portion of the base plate closest to the center of gravity of the base plate is formed separately from the tank fixing portion, the base plate can be stably fixed to the toilet body.

[0020] Further, in the present invention, preferably, in a bottom view, the tank device is formed in an L shape, and the base plate is formed in a rectangular shape. In the present invention configured as described above, in a bottom view, since the tank device is formed in an L shape and the base plate is formed in a rectangular shape, the lower opening of the toilet body can be covered.

Advantages of the Invention

[0021] According to the flush toilet of the present invention, the space inside the toilet body can be widened, and the tank device can be stably fixed to the toilet body.

Brief Description of the Drawings

[0022] [Figure 1] It is a perspective view showing a flush toilet according to an embodiment of the present invention. [Figure 2] It is a top view of the flush toilet with the sanitary cleaning device removed according to an embodiment of the present invention. [Figure 3] It is a side sectional view taken along line III-III in FIG. 2. [Figure 4A] It is a perspective view of the functional device of the flush toilet according to an embodiment of the present invention as viewed obliquely from above on the left side. [Figure 4B] It is a perspective view of the functional device of the flush toilet according to an embodiment of the present invention as viewed obliquely from above on the right side. [Figure 5] It is a configuration diagram showing a water supply path through which the washing water of the flush toilet according to an embodiment of the present invention flows. [Figure 6] This is a bottom view of the toilet bowl body of a flush toilet according to one embodiment of the present invention. [Figure 7A] This is a perspective view of a flush toilet tank assembly according to one embodiment of the present invention, seen from the upper left at an angle. [Figure 7B] This is a perspective view of a flush toilet tank assembly according to one embodiment of the present invention, seen from the upper right at an angle. [Figure 8] This is a bottom view of the tank device of a flush toilet according to one embodiment of the present invention. [Figure 9] This is a perspective view of the base plate of a flush toilet according to one embodiment of the present invention. [Figure 10] This is a bottom view of the base plate of a flush toilet according to one embodiment of the present invention. [Figure 11] This is a bottom view showing a toilet bowl according to one embodiment of the present invention, with the tank device and base plate attached to the toilet bowl body. [Figure 12] This is an enlarged cross-sectional view along line XII-XII in Figure 11. [Figure 13] This is an enlarged cross-sectional view along the line XIII-XIII in Figure 11. [Modes for carrying out the invention]

[0023] A flush toilet 1 according to one embodiment of the present invention will be described below with reference to the attached drawings. First, the basic structure of a flush toilet 1 according to one embodiment of the present invention will be explained with reference to Figures 1 to 3. Figure 1 is a perspective view showing a flush toilet according to one embodiment of the present invention, Figure 2 is a top view of the flush toilet according to one embodiment of the present invention with the sanitary cleaning device removed, and Figure 3 is a side cross-sectional view taken along line III-III in Figure 2. In Figure 2, the rim water channel, jet water channel, and jet water supply pipe are indicated by dotted lines. In this specification, when viewing a flush toilet from the front, the front side is referred to as "front," the back side as "rear," the left side as "left," and the right side as "right."

[0024] As shown in Figure 1, a flush toilet 1 according to one embodiment of the present invention is a wall-mounted flush toilet whose back surface is fixed to a wall W. The flush toilet 1 comprises a ceramic toilet bowl body 2, a tank device 4 for storing flushing water supplied to the toilet bowl body 2, and a sanitary washing device 6 mounted on the top surface of the toilet bowl body 2. A shut-off valve 8 is provided on the wall W for supplying or stopping the flow of flushing water from a water source (not shown), such as a water supply, to the flush toilet 1. This shut-off valve 8 is connected to the flush toilet 1 via a water supply pipe 10.

[0025] As shown in Figures 2 and 3, the toilet bowl body 2 has a bowl portion 12 for receiving waste, a drain trap pipe 14 connected below the bowl portion 12 for discharging waste, and a skirt portion 16 that surrounds the bowl portion 12 and the drain trap pipe 14 from the outside. A space S is formed inside the toilet bowl body 2 between the bowl portion 12 and the drain trap pipe 14 and the skirt portion 16.

[0026] The bowl portion 12 comprises a bowl-shaped waste receiving surface 18 and a rim portion 20 formed along the upper edge of the bowl portion 12. Water is formed inside the bowl portion 12.

[0027] The rim portion 20 has a rim outlet 22 for discharging cleaning water towards the rear, and a rim water channel 24 for guiding the cleaning water to the rim outlet 22. The rim outlet 22 is located near the center in the front-to-back direction on the right side of the bowl portion 12. The cleaning water discharged from the rim outlet 22 flows down the waste receiving surface 18 while swirling along the inner circumferential surface of the rim portion 20, cleaning the bowl portion 12.

[0028] Below the bowl section 12, a jet outlet 26 is formed, which discharges cleaning water toward the inlet 14a of the drain trap pipe 14, and a jet water channel 28 is formed, which supplies cleaning water to the jet outlet 26. The jet outlet 26 is positioned opposite the inlet 14a of the drain trap pipe 14. The cleaning water discharged from the jet outlet 26 flows into the drain trap pipe 14 to activate a siphon effect.

[0029] One embodiment of the present invention describes a flush toilet 1 which is a siphon-jet type flush toilet that discharges waste by generating a siphon action through a jet of water. However, it is not limited to this form, and other forms may include, for example, a wash-down type flush toilet that washes away waste with the flowing action caused by the difference in water pressure, or a siphon-type flush toilet that discharges waste by generating a siphon action solely through rim water discharge.

[0030] The drain trap pipe 14 comprises an inlet 14a connected to the bottom of the bowl section 12, an upward pipe 14b extending upward from the inlet 14a, a top 14c located at the highest point of the upward pipe 14b that defines the water level, and a rear pipe 14d extending almost horizontally backward from this top 14c. The rear pipe 14d of the drain trap pipe 14 is connected to a drain pipe (not shown) inside the wall W via a drain socket 30.

[0031] The sanitary washing device 6 comprises a main body (not shown), a washing nozzle (not shown) that is movable forward and backward from the main body, a toilet seat (not shown) that is rotatably attached to the main body, and a toilet seat cover that is rotatably attached to the main body so as to cover the toilet seat. The water supply pipe 10 connected to the shut-off valve 8 is connected to the main body of the sanitary washing device 6 and supplies washing water to be sprayed from the washing nozzle.

[0032] As shown in Figures 2 and 3, a space S is formed within the toilet bowl body 2 between the bowl portion 12 and the drain trap pipe 14 and the skirt portion 16. The tank device 4 is housed in the space S surrounded by the skirt portion 16 below the bowl portion 12 within the toilet bowl body 2. Functional devices for supplying flushing water to the toilet bowl body are housed in the space S behind the bowl portion 12 within the toilet bowl body 2. These functional devices include, for example, a water supply valve device 32, a pump device 34, a switching valve device 36, and a control device 38. Furthermore, a base plate 40 is provided in the lower opening 2a surrounded by the skirt portion 16 of the toilet bowl body 2, and the above-mentioned functional devices are supported by this base plate 40.

[0033] Next, the tank device 4, functional device, and base plate 40 housed in the space S within the toilet bowl body 2 will be described with reference to Figures 4A and 4B. Figure 4A is a perspective view of the functional device of a flush toilet according to one embodiment of the present invention, viewed from the upper left, and Figure 4B is a perspective view of the functional device of a flush toilet according to one embodiment of the present invention, viewed from the upper right, at an angle. In Figure 4A, the direction of the flow of flushing water is indicated by an arrow.

[0034] The tank device 4 includes a water storage tank 42 for storing flushing water supplied to the toilet bowl 2, a tank water supply unit 46 for allowing flushing water from a water supply pipe 44 to flow into the water storage tank 42, a float switch 48 for detecting the water level of flushing water stored in the water storage tank 42, and a fixing member 50 for fixing the tank device 4 to the bottom surface of the toilet bowl 2.

[0035] The water storage tank 42 is formed in an L-shape when viewed from above, extending forward to the right of the drain trap pipe 14, then bending and extending to the left. The water storage tank 42 is a resin tank that stores cleaning water used for rim discharge and jet discharge, and can store approximately 4 liters of cleaning water.

[0036] The tank water supply unit 46 is located on top of the water storage tank 42. The upstream side of the tank water supply unit 46 is connected to the tank water supply pipe 44, and the downstream side of the tank water supply unit 46 is connected to the water storage tank 42. Inside the tank water supply unit 46, a flow path is formed to guide the cleaning water from the tank water supply pipe 44 towards the water storage tank 42.

[0037] The float switch 48 is located above the water storage tank 42. The float switch 48 turns off when the water level in the tank falls below the shut-off level (full water level), opening the water supply valve device 32. Conversely, the float switch 48 turns on when the water level in the tank rises to the shut-off level, closing the water supply valve device 32.

[0038] The water storage tank 42 is equipped with an overflow unit 62 for draining cleaning water outside the tank in the event that, for example, the float switch 48 malfunctions and the tank continues to supply water. The overflow unit 62 is connected to a drain socket 30, so that cleaning water overflowing from the water storage tank 42 is discharged into the drain socket 30 via the overflow unit 62.

[0039] The water supply valve device 32 includes a constant flow valve (not shown) for maintaining a constant flow rate of cleaning water, an on-off valve (not shown) located downstream of the constant flow valve for switching between supplying and shutting off cleaning water, and a solenoid valve (not shown) for driving this on-off valve. The upstream side of the water supply valve device 32 is connected to a water source (not shown) via a stopcock 8 and a water supply pipe 10, while the downstream side of the water supply valve device 32 is connected to the sanitary cleaning device 6 via a water supply pipe 52 for the sanitary cleaning device, and also to the tank device 4 via a water supply pipe 44 for the tank. When the solenoid valve opens electromagnetically, the on-off valve opens, and cleaning water from the water source is supplied to the tank device 4 via the water supply pipe 44 for the tank.

[0040] The pump device 34 is a pressurized pump that draws in the flushing water stored in the tank device 4 and pumps it to the toilet bowl body 2. The upstream side of the pump device 34 is connected to the tank device 4 via an upstream connecting pipe 54, and the downstream side of the pump device 34 is connected to the switching valve device 36 via a downstream connecting pipe 56. When the pump device 34 is operated, the flushing water stored in the tank device 4 is pumped and discharged from the rim outlet 22 and the jet outlet 26, thereby flushing the toilet bowl. In this embodiment of the flush toilet 1, the flushing water stored in the tank device 4 is supplied to the rim outlet 22 and the jet outlet 26, but the invention is not limited to this configuration, and other configurations are also applicable, such as a configuration in which all the flushing water stored in the tank device 4 is discharged from the rim outlet 22.

[0041] The switching valve device 36 includes a switching valve body (not shown) and switches the water supply channels that supply cleaning water from the pump device 34 to the rim discharge port 22 and the jet discharge port 26, respectively. The upstream side of the switching valve device 36 is connected to the pump device 34 via a downstream connecting pipe 56, and the downstream side of the switching valve device 36 is connected to the rim water supply channel 24 via a rim water supply pipe 58 and to the jet water supply channel 28 via a jet water supply pipe 60. When the switching valve body is closed, cleaning water from the pump device 34 is supplied to the rim discharge port 22, and when the switching valve body is open, cleaning water from the pump device 34 is supplied to both the rim discharge port 22 and the jet discharge port 26.

[0042] The control device 38 is electrically connected to a remote control (not shown), a tank device 4 (float switch 48), a sanitary cleaning device 6, a water supply valve device 32, and a pump device 34, and is capable of sending and receiving various signals. When the control device 38 receives a cleaning start signal for a large or small cleaning from the remote control, it drives or stops the pump device 34 based on a pre-stored cleaning sequence. Specifically, when the user operates the remote control, the control device 38 drives the pump device 34 to discharge the cleaning water stored in the tank device 4 from the rim outlet 22 and the jet outlet 26. The control device 38 also opens the water supply valve device 32 to supply water to the tank, and when the float switch 48 detects that the tank is full, it closes the water supply valve device 32 to stop the tank water supply.

[0043] The pipes connected to each of the above-mentioned functional devices (water supply pipe 10, water supply pipe 44 for the tank, water supply pipe 52 for the sanitary cleaning device, upstream connecting pipe 54, downstream connecting pipe 56, water supply pipe 58 for the rim, and water supply pipe 60 for the jet) are flexible and can absorb manufacturing errors in the ceramic toilet bowl body 2.

[0044] Next, with reference to Figure 5, the water supply channel through which the flushing water of a flush toilet 1 according to one embodiment of the present invention flows will be explained. Figure 5 is a diagram showing the water supply channel through which flushing water flows for a flush toilet according to one embodiment of the present invention.

[0045] The water supply channel of the flush toilet 1 is configured, from upstream, with a stopcock 8, a water supply valve device 32, a tank device 4, a pump device 34, and a switching valve device 36. First, flushing water is supplied from the water source to the water supply valve device 32 via the stopcock 8 and the water supply pipe 10. The flushing water supplied to the water supply valve device 32 is supplied to the sanitary flushing device 6 via the sanitary flushing device water supply pipe 52, and also to the tank device 4 via the tank water supply pipe 44. The flushing water stored in the tank device 4 is drawn up by the pump device 34 via the upstream connecting pipe 54 and supplied to the switching valve device 36 via the downstream connecting pipe 56. The flushing water supplied to the switching valve device 36 is discharged from the rim outlet 22 via the rim water supply pipe 58 and the rim water conduit 24, and also discharged from the jet outlet 26 via the jet water supply pipe 60 and the jet water conduit 28. Furthermore, the cleaning water that overflows from the tank device 4 is discharged to the drain socket 30 via the overflow unit 62.

[0046] Next, with reference to Figure 6, the toilet bowl body 2 of the flush toilet 1 according to one embodiment of the present invention will be described in detail. Figure 6 is a bottom view of the toilet bowl body of a flush toilet according to one embodiment of the present invention. In Figure 6, the inner wall 16a and outer wall 16b of the skirt portion 16 of the toilet bowl body 2 are shown by dotted lines.

[0047] As shown in Figure 6, the bottom surface of the toilet bowl body 2 is provided with a first tank fixing part 64 on the front right side, a second tank fixing part 66 on the rear right side, and a third tank fixing part 68 on the front left side, which serve as fixing parts for fixing the tank device 4 to the toilet bowl body 2. The bottom surface of the toilet bowl body 2 is also provided with a first base plate fixing part 70 on the front left side and a second base plate fixing part 72 on the rear left side, which serve as fixing parts for fixing the base plate 40 to the toilet bowl body 2. The third tank fixing part 68 and the first base plate fixing part 70 are formed as the same fixing part in common. Each of the fixing parts of the tank device 4 and the base plate 40 is provided with a fixing hole into which a fixing member 50 is inserted.

[0048] As shown in Figure 6, the skirt portion 16 comprises an inner wall 16a that forms the inner wall surface and an outer wall 16b that is positioned outside the inner wall 16a and forms the outer wall surface. In a bottom view, the skirt portion 16 has a space enclosed by the inner wall 16a and the outer wall 16b. Thus, the skirt portion 16 has a hollow portion 74 formed inside by a closed space (see Figure 6). The hollow portion 74 is a part formed by single molding to form a hollow molded body. The tank fixing part of the tank device 4 and the base plate fixing part of the base plate 40 are provided in the hollow portion 74. As a result, the hollow portion 74 formed by the space enclosed by the inner wall 16a and the outer wall 16b has greater strength and does not break compared to the solid portion (a part formed by double molding to form a solid molded body), so the tank device 4 and the base plate 40 can be stably fixed.

[0049] The fixing parts for the tank device 4 and the base plate 40 are provided on the bottom surface of the skirt portion 16. The second tank fixing part 66 and the second base plate fixing part 72 are provided on the wall fixing part 76 for fixing the toilet bowl body 2 to the wall surface W. The wall fixing part 76 has a predetermined thickness extending from the back to the front of the toilet bowl body 2. Furthermore, two stepped portions 78 that are recessed upward are formed on the bottom surface of the wall fixing part 76. The stepped portions 78 are arranged symmetrically with respect to the center line CL in the left-right direction of the center of the toilet bowl body 2. The second tank fixing part 66 and the second base plate fixing part 72 are provided on these stepped portions 78. This allows the tank device 4 and the base plate 40 to be stably fixed.

[0050] Next, the tank device 4 of the flush toilet 1 according to one embodiment of the present invention will be described in detail with reference to Figures 7A, 7B, and 8. Figure 7A is a perspective view of the tank device of a flush toilet according to one embodiment of the present invention, viewed from the upper left. Figure 7B is a perspective view of the tank device of a flush toilet according to one embodiment of the present invention, viewed from the upper right. Figure 8 is a bottom view of the tank device of a flush toilet according to one embodiment of the present invention.

[0051] As shown in Figures 7A and 7B, the water storage tank 42 of the tank device 4 is formed in an L-shape when viewed from above, and is formed asymmetrically with respect to the center line CL in the left-right direction of the toilet bowl body 2. The water storage tank 42 comprises a first tank section 80 located to the right of the center line CL, a second tank section 82 located to the left of the center line CL, and a connecting section 84 that connects the first tank section 80 and the second tank section 82.

[0052] The capacity (volume) of the second tank section 82 is set to be smaller than that of the first tank section 80. The upper wall 82a of the second tank section 82 is set to be lower than the upper wall 80a of the first tank section 80. The vertical height dimension of the second tank section 82 is set to be smaller than that of the first tank section 80, and the front-to-back length of the second tank section 82 is set to be smaller than that of the first tank section 80. As a result, functional devices such as the pump device 34 and the base plate 40 can be placed in the rear region A of the second tank section 82.

[0053] An inlet pipe 80b extending vertically is formed in the upper wall 80a of the first tank section 80, allowing cleaning water from the water source to flow into the tank through the inlet pipe 80b. A float switch 48 for detecting the water level of the cleaning water stored in the tank is also fixed to the upper wall 80a of the first tank section 80. Furthermore, an overflow pipe 80c is fixed to the upper wall 80a of the first tank section 80 for discharging cleaning water from the tank in the event that, for example, the float switch 48 malfunctions and the tank water supply continues. The overflow pipe 80c is connected to an overflow unit 62, and the cleaning water discharged from the overflow pipe 80c is discharged into the drain socket 30 via the overflow unit 62.

[0054] An outlet pipe 82c extending in the front-rear direction is formed in the rear wall 82b of the second tank section 82. The outlet pipe 82c is connected to the upstream connecting pipe 54, so that the cleaning water in the tank is supplied to the pump device 34. The upper wall 84a of the connecting section 84 is set to be lower than the upper wall 82a of the second tank section 82. Furthermore, the upper wall 84a of the connecting section 84 is formed in a concave shape toward downward. A jet water conduit 28 is arranged in this concave upper wall 84a.

[0055] As shown in Figures 7A and 7B, the water storage tank 42 of the tank device 4 comprises an upper tank member 86 and a lower tank member 88 that is joined to the upper tank member 86, and is constructed by joining the upper tank member 86 and the lower tank member 88. The joint between the upper tank member 86 and the lower tank member 88 is joined in a way that prevents cleaning water from leaking.

[0056] As shown in Figure 8, the lower tank member 88 is formed in an L-shape. The lower tank member 88 has mounting portions that, when viewed from the bottom, extend outward from the outer edge of the upper tank member 86. These mounting portions include a first mounting portion 88a on the right front, a second mounting portion 88b on the right rear, and a third mounting portion 88c on the left front. The first mounting portion 88a, the second mounting portion 88b, and the third mounting portion 88c of the lower tank member 88 are positioned to correspond to the first tank fixing portion 64, the second tank fixing portion 66, and the third tank fixing portion 68 of the toilet bowl body 2, respectively. Each mounting portion of the lower tank member 88 has a through hole into which a fixing member 50 is inserted. By inserting the fixing member 50 into this through hole, the tank device 4 is fixed to the toilet bowl body 2.

[0057] The lower tank member 88 is provided with a temporary fixing portion 88d for temporarily fixing the tank device 4 to the base plate 40. The temporary fixing portion 88d of the tank device 4 is designed to engage with the temporary fixing portion 40c of the base plate 40. The temporary fixing portion 88d is used for positioning when fixing the tank device 4 and the base plate 40.

[0058] Next, the base plate 40 of the flush toilet 1 according to one embodiment of the present invention will be described in detail with reference to Figures 9 and 10. Figure 9 is a perspective view of the base plate of a flush toilet according to one embodiment of the present invention, and Figure 10 is a bottom view of the base plate of a flush toilet according to one embodiment of the present invention.

[0059] As shown in Figures 9 and 10, the base plate 40 is formed from a rectangular resin plate. The base plate 40 has mounting portions that extend outward from the outer edge of the rectangular shape of the base plate 40 when viewed from below. These mounting portions include a first mounting portion 40a on the left front side and a second mounting portion 40b on the left rear side. The first mounting portion 40a and the second mounting portion 40b of the base plate 40 are positioned to correspond to the first base plate fixing portion 70 and the second base plate fixing portion 72 of the toilet bowl body 2, respectively. Each mounting portion of the base plate 40 has a through hole into which a fixing member 50 is inserted. By inserting the fixing member 50 into this through hole, the base plate 40 is fixed to the toilet bowl body 2.

[0060] The base plate 40 is provided with a temporary fixing portion 40c for temporarily fixing the base plate 40 to the tank device 4. The temporary fixing portion 40c of the base plate 40 is designed to engage with the temporary fixing portion 88d of the tank device 4. The temporary fixing portion 40c of the base plate 40 is used for positioning when fixing the tank device 4 and the base plate 40. The temporary fixing portion 40c of the base plate 40 is positioned to correspond to the temporary fixing portion 88d of the lower tank member 88. The temporary fixing portion 40c of the base plate 40 overlaps the temporary fixing portion 88d of the lower tank member 88 from above, so that the base plate 40 is supported by the lower tank member 88.

[0061] The upper surface of the base plate 40 is provided with a pump fixing portion 40d that extends upward and is used to mount the pump device 34. The upper surface of the base plate 40 is also provided with a water supply valve fixing portion 40e that extends upward and is used to mount the water supply valve device 32. Furthermore, the base plate 40 has a through hole 40f through which the water supply pipe 10 passes.

[0062] Next, the positional relationship between the toilet bowl body 2, the tank device 4, and the base plate 40 of a flush toilet according to one embodiment of the present invention will be described in detail with reference to Figures 11 to 13. Figure 11 is a bottom view showing the toilet bowl body of a flush toilet according to one embodiment of the present invention with the tank device and base plate attached; Figure 12 is an enlarged cross-sectional view along the line XII-XII in Figure 11; and Figure 13 is an enlarged cross-sectional view along the line XIII-XIII in Figure 11.

[0063] As shown in Figure 11, the tank device 4 and the base plate 40 are fixed so as to cover the lower opening 2a of the toilet bowl body 2. The first tank fixing part 64 and the first mounting part 88a of the lower tank member 88 are located to the right and in front of the center line CL of the toilet bowl body 2. The second tank fixing part 66 and the second mounting part 88b of the lower tank member 88 are located to the right and in the rear of the center line CL. Furthermore, the third tank fixing part 68, the first base plate fixing part 70, the third mounting part 88c of the lower tank member 88, and the first mounting part 40a of the base plate 40 are located to the left and in front of the center line CL. The second base plate fixing part 72 and the second mounting part 40b of the base plate 40 are located to the left and in the rear of the center line CL.

[0064] The tank device 4 is fixed to the toilet bowl body 2 by a first tank fixing part 64, a second tank fixing part 66, and a third tank fixing part 68. The first tank fixing part 64, the second tank fixing part 66, and the third tank fixing part 68 are positioned such that, in a bottom view, the center of gravity G1 of the tank device is located inside the imaginary line V connecting the first tank fixing part 64, the second tank fixing part 66, and the third tank fixing part 68. This ensures that the tank device 4 is stably fixed. In one embodiment of the present invention, the flush toilet 1 has the tank device 4 fixed to the toilet bowl body 2 by three fixing parts, but the invention is not limited to this form, and other forms may be used, such as by two fixing parts or four or more fixing parts.

[0065] The base plate 40 is fixed to the toilet bowl body 2 by the first base plate fixing portion 70 and the second base plate fixing portion 72 of the toilet bowl body 2. The base plate 40 is also supported by the lower tank member 88, with the temporary fixing portion 40c of the base plate 40 engaging with the temporary fixing portion 88d of the lower tank member 88. In the flush toilet 1 according to one embodiment of the present invention, the base plate 40 is fixed to the toilet bowl body 2 by two base plate fixing portions, but the invention is not limited to this form, and in other forms, it may be fixed by three or more base plate fixing portions. In such cases, it is preferable that the base plate fixing portions are arranged so that the center of gravity of the base plate is located inside the imaginary line connecting the base plate fixing portions.

[0066] The third tank fixing portion 68 and the first base plate fixing portion 70 of the toilet bowl body 2 are formed in common. This allows the third mounting portion 88c of the lower tank member 88 and the first mounting portion 40a of the base plate 40 to be fixed together with a single fixing member 50. The other fixing portions (64, 66, 72) of the toilet bowl body 2, other than the third tank fixing portion 68 and the first base plate fixing portion 70, are formed independently. In particular, the first tank fixing portion 64, which is closest to the center of gravity G1 of the tank device 4, is formed separately from the base plate fixing portion. This allows the tank device 4 to be fixed stably. Also, the second base plate fixing portion 72, which is closest to the center of gravity G2 of the base plate 40, is formed separately from the tank fixing portion. This allows the base plate 40 to be fixed stably.

[0067] As shown in Figure 12, the first mounting portion 88a of the lower tank member 88 is fixed to the first tank fixing portion 64 by a fixing member 50. The fixing member 50 includes a rubber bushing 50a inserted into the hollow portion 74 through a fixing hole in the first tank fixing portion 64, a nut 50b embedded in the rubber bushing 50a, a bolt 50c screwed onto the nut 50b, and a washer 50d that contacts the surface of the lower tank member 88 when the bolt 50c is tightened. When the bolt 50c is tightened, the nut 50b is pulled downward, and the rubber bushing 50a elastically deforms and is pressed against the back surface of the first tank fixing portion 64. As a result, the first mounting portion 88a of the lower tank member 88 is fixed to the first tank fixing portion 64. Note that the fixing structure using the fixing member 50 is the same configuration for the fixing portions of other toilet bowl bodies 2.

[0068] As shown in Figure 13, the third tank fixing portion 68 (first base plate fixing portion 70) of the toilet bowl body 2 is fixed together with the third mounting portion 88c of the lower tank member 88 and the first mounting portion 40a of the base plate 40 by a fixing member 50. The first mounting portion 40a of the base plate 40 is fixed above the third mounting portion 88c of the lower tank member 88. As a result, the base plate 40 is supported by the tank device 4.

[0069] The following describes the operation and effects of the flush toilet 1 according to the above-described embodiment. First, according to one embodiment of the present invention, the toilet bowl 1 comprises a hollow section 74 whose interior is formed by a closed space, and a first tank fixing section 64, a second tank fixing section 66, and a third tank fixing section 68 to which the tank device 4 is fixed by a fixing member 50. Since each tank fixing section is provided in the hollow section 74, the space S inside the toilet bowl 2 can be made wider, and the tank device 4 can be stably fixed to the toilet bowl 2.

[0070] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, the first tank fixing part 64, the second tank fixing part 66, and the third tank fixing part 68 are provided on the skirt part 16, so the space S inside the toilet body 2 can be widened.

[0071] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, a recessed portion 78 is formed on the bottom surface of the toilet bowl body 2, and the second tank fixing portion 66 is provided on the recessed portion 78, so that the tank device 4 can be stably fixed to the toilet bowl body 2.

[0072] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, the toilet body 2 is provided with a wall fixing part 76 for fixing it to the wall surface W, and the second tank fixing part 66 is provided on the wall fixing part 76, so that the space S inside the toilet body 2 can be widened.

[0073] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, it is equipped with three or more first tank fixing parts 64, second tank fixing parts 66 and third tank fixing parts 68, and each tank fixing part is arranged such that, in a bottom view, the center of gravity of the tank device 4 is located inside the imaginary line V connecting the first tank fixing part 64, the second tank fixing part 66 and the third tank fixing part 68, so that the tank device 4 can be stably fixed to the toilet body 2.

[0074] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, the tank device 4 is composed of an upper tank member 86 and a lower tank member 88 that is joined to the upper tank member 86, and since the lower tank member 88 is fixed to each tank fixing part, the upper tank member 86 and the lower tank member 88 can be joined more stably compared to the case where the upper tank member 86 is fixed to each tank fixing part.

[0075] Furthermore, according to one embodiment of the present invention, a flush toilet 1 includes a functional device for supplying flushing water to the toilet body 2, a base plate 40 supporting the functional device, and a fixing member 50 for fixing the base plate 40 to the toilet body 2. The toilet body 2 includes a first base plate fixing part 70 and a second base plate fixing part 72 to which the base plate 40 is fixed by the fixing member 50. Since the first base plate fixing part 70 and the second base plate fixing part 72 are provided in a hollow part 74, the space S inside the toilet body 2 can be widened, and the base plate 40 can be stably fixed to the toilet body 2.

[0076] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, the first base plate fixing part 70 and the second base plate fixing part 72 are provided on the skirt part 16, so the space S inside the toilet body 2 can be widened.

[0077] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, a recessed portion 78 is formed on the bottom surface of the toilet body 2, and the second base plate fixing portion 72 is provided on the recessed portion 78, so that the base plate 40 can be stably fixed to the toilet body 2.

[0078] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, the toilet body 2 is provided with a wall fixing part 76 for fixing it to the wall surface W, and the second base plate fixing part 72 is provided on the wall fixing part 76, so that the space S inside the toilet body 2 can be widened.

[0079] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, the third tank fixing part 68 and the first base plate fixing part 70 are formed in common, so the space S inside the toilet body 2 can be widened. Also, the tank device and base plate can be easily fixed to the toilet body.

[0080] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, the tank fixing portion is such that the first tank fixing portion 64, which is closest to the center of gravity of the tank device 4, is formed separately from the first base plate fixing portion 70 and the second base plate fixing portion 72, so that the tank device 4 can be stably fixed to the toilet body 2.

[0081] Furthermore, according to a modified example of the flush toilet 1 according to one embodiment of the present invention, the base plate fixing portion is such that the fixing portion closest to the center of gravity of the base plate 40 is formed separately from the tank fixing portion, so that the base plate 40 can be stably fixed to the toilet body 2.

[0082] Furthermore, according to the flush toilet 1 of one embodiment of the present invention, in a view from the bottom, the tank device 4 is formed in an L-shape and the base plate 40 is formed in a rectangular shape, so that it can cover the lower opening 2a of the toilet body 2.

[0083] According to another embodiment of the present invention, the flush toilet is equipped with three or more base plate fixing parts, and the base plate fixing parts are arranged such that, in a view from the bottom, the center of gravity of the base plate 40 is located inside the imaginary line connecting the base plate fixing parts, so that the base plate 40 can be stably fixed to the toilet body 2.

[0084] The present invention is not limited to the embodiments described above, and various modifications and variations are possible within the scope of the technical idea described in the claims. [Explanation of symbols]

[0085] 1: Flush toilet 2: Toilet bowl 4: Tank equipment 12: Bowl section 14: Drain trap pipe 16: Skirt section 16a:Outside wall 16b:Inner wall 32: Water supply valve device 34: Pumping equipment 36: Switching valve device 38: Control device 40: Base plate 40a: First mounting portion of the base plate 40b: Second mounting section of the base plate 40c: Temporary fixing part of the base plate 40d: Pump mounting section of the base plate 40e: Water supply valve fixing part of the base plate 40f: Through hole in base plate 42: Water storage tank 50: Fixing member 50a: Rubber bushing 50b: Nut 50c: Bolt 50d: Washer 64: First tank fixing section 66: Second tank fixing section 68: Third tank fixing section 70: First base plate fixing part 72: Second base plate fixing part 74:Hollow part 76: Wall fixing part 78 :Dan section 86: Upper tank component 88: Lower tank component 88a: First mounting portion of the lower tank member 88b: Second mounting portion of the lower tank member 88c: Third mounting portion of the lower tank member 88d: Temporary fixing part of the lower tank component CL: The center line in the left-right direction of the toilet bowl. S: Space inside the toilet bowl A: The rear area of ​​the second tank section within the toilet bowl body. G1: Center of gravity of the water storage tank V: Imaginary line connecting the tank fixing points W: Wall surface

Claims

1. It is a wall-mounted flush toilet, A toilet bowl body comprising a bowl portion for receiving waste, a drain trap pipe connected below the bowl portion for discharging waste, and a skirt portion surrounding the bowl portion and the drain trap pipe from the outside, A tank device is provided, which is located in the space below the bowl portion within the toilet body and stores the flushing water supplied to the toilet body. A fixing member for fixing the above-mentioned tank device to the above-mentioned toilet bowl body, It has, The toilet bowl body comprises a hollow section formed by a closed space inside, and a tank fixing section to which the tank device is fixed by the fixing member. A flush toilet characterized in that the tank fixing part is provided in the hollow part.

2. The above-mentioned tank fixing part is provided in the above-mentioned skirt part, as described in claim 1.

3. The toilet bowl body has a recessed portion formed on its bottom surface that is indented upward, and the tank fixing portion is provided on the recessed portion, as described in claim 2.

4. The above toilet bowl body is equipped with a wall-mounting part for fixing it to the wall, The above-mentioned tank fixing part is provided on the above-mentioned wall fixing part, as described in any one of claims 1 to 3.

5. Equipped with three or more of the above-mentioned tank fixing parts, A flush toilet according to any one of claims 1 to 3, wherein, in a bottom view, the tank fixing part is positioned such that the center of gravity of the tank device is located inside a virtual line connecting the tank fixing parts.

6. The above-mentioned tank device is composed of an upper tank member and a lower tank member that is joined to the upper tank member. The flush toilet according to claim 1, wherein the lower tank member is fixed to the tank fixing part.

7. A functional device for supplying flushing water to the toilet bowl body, A base plate supporting the above-mentioned functional device, A fixing member for fixing the above base plate to the above toilet bowl body, It has, The above toilet bowl body includes a base plate fixing part to which the base plate is fixed by the fixing member, The above-mentioned base plate fixing portion is provided in the above-mentioned hollow portion, as described in claim 1.

8. The above-mentioned base plate fixing portion is provided on the above-mentioned skirt portion, as described in claim 7.

9. The flush toilet according to claim 8, wherein a recessed portion is formed on the bottom surface of the toilet bowl body, and the base plate fixing portion is provided on the recessed portion.

10. The above toilet bowl body is equipped with a wall-mounting part for fixing it to the wall, The above-mentioned base plate fixing portion is provided on the above-mentioned wall fixing portion, as described in any one of claims 7 to 9.

11. The base plate is equipped with three or more of the above-mentioned base plate fixing parts, A flush toilet according to any one of claims 7 to 9, wherein, in a view from below, the base plate fixing portion is positioned such that the center of gravity of the base plate is located inside the imaginary line connecting the base plate fixing portions.

12. The flush toilet according to claim 7, wherein at least one of the tank fixing portion and the base plate fixing portion is formed in common.

13. The flush toilet according to claim 12, wherein the tank fixing part closest to the center of gravity of the tank device is formed separately from the base plate fixing part.

14. The flush toilet according to claim 12 or 13, wherein the base plate fixing portion closest to the center of gravity of the base plate is formed separately from the tank fixing portion.

15. The flush toilet according to claim 7, wherein, in a view from below, the tank device is formed in an L-shape, and the base plate is formed in a rectangular shape.

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