Water-washable toilet

Abstract

The present invention aims to provide a flush toilet in which the functional device can be compactly housed within the toilet bowl body. [Solution] The present invention relates to a 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, and a functional device arranged in a space S within the toilet body 2 for supplying flushing water to the toilet body, wherein the functional device comprises a pump device 34 (first functional unit), a control device 38 (second functional unit) arranged above the pump device 34, and a switching valve device 36 (third functional unit) arranged above the control device 38, and each of the pump device 34, control device 38 and switching valve device 36 is arranged such that at least a portion of them overlaps with each other in a top view.

Description

Technical Field

[0001] The present invention relates to a flushing toilet, and particularly to a flushing toilet that is washed with washing water to discharge dirt.

Background Art

[0002] Conventionally, as described in Patent Documents 1 to 4, there is known a flushing toilet in which a water storage tank for storing washing water supplied to a toilet body is housed in the toilet body. Such a flushing toilet includes many functional devices in the toilet body, such as a pump device for supplying washing water to the toilet body and a control device for driving the pump device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a flushing toilet such as those of Patent Documents 1 to 4, it is conceivable to shorten the vertical height dimension of the toilet body to a low-sill design. However, when a flushing toilet such as those of Patent Documents 1 to 3 is made into a low-sill design, the space inside the toilet body becomes narrow, so there is a problem that the functional device interferes with the water storage tank and the functional device cannot be housed in the toilet body.

[0005] Therefore, the present invention has been made to solve the above-mentioned problems and aims to provide a flush toilet in which the functional device can be compactly housed within the toilet bowl body. [Means for solving the problem]

[0006] To solve the above-mentioned problems, the present invention provides a flush toilet that washes away waste with flushing water, comprising: a toilet 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; and a functional device disposed in the space inside the toilet body for supplying flushing water to the toilet body, wherein the functional device comprises: a first functional unit; a second functional unit disposed above the first functional unit; and a third functional unit disposed above the second functional unit, and each of the first, second, and third functional units is arranged such that at least a portion of them overlaps with each other when viewed from above. In the present invention configured as described above, the functional device comprises a first functional unit, a second functional unit positioned above the first functional unit, and a third functional unit positioned above the second functional unit. Since the first, second, and third functional units are arranged so that at least a portion of them overlap each other when viewed from above, the functional device can be made compact. As a result, the functional device can be compactly housed within the toilet bowl body.

[0007] In the present invention, preferably, the third functional part is fixed to the second functional part, and the second functional part is fixed to the first functional part. In the present invention configured in this way, the third functional part is fixed to the second functional part, and the second functional part is fixed to the first functional part. Therefore, each functional part can be removed one by one during maintenance, thereby improving maintainability.

[0008] Furthermore, in the present invention, preferably, the third functional part is located inside the outer peripheral edges of the first and second functional parts when viewed from above. In the present invention configured in this way, the third functional unit is positioned inside the outer edges of the first and second functional units when viewed from above, thus making the functional device compact.

[0009] In the present invention, preferably, the third functional part is located inside the outer peripheral edge of the first functional part when viewed from above. In the present invention configured in this way, the third functional part is positioned inside the outer edge of the first functional part when viewed from above, so the functional device can be made compact.

[0010] Furthermore, in the present invention, preferably, a connecting pipe is provided to connect the first functional unit and the third functional unit, and the connecting pipe is arranged in parallel with the second functional unit. In the present invention configured in this way, a connecting pipe is provided to connect the first functional part and the third functional part, and since the connecting pipe is arranged in parallel with the second functional part, the connecting pipe can be arranged without sharply bending it.

[0011] In the present invention, preferably, the connecting pipe is positioned inside the outer peripheral edge of the first functional part when viewed from above. In the present invention configured in this way, the connecting pipe is positioned inside the outer edge of the first functional part when viewed from above, so that the functional device and the connecting pipe can be made compact.

[0012] Furthermore, in the present invention, preferably, a water supply pipe is provided that extends forward from the third functional unit and connects to the toilet bowl body to supply flushing water to the toilet bowl body, and the second functional unit is positioned behind the third functional unit. In the present invention configured in this way, a water supply pipe extends forward from the third functional unit and connects to the toilet bowl body to supply flushing water to the toilet bowl body, and the second functional unit is positioned behind the third functional unit, so that even if flushing water leaks from the water supply pipe, the second functional unit will not be exposed to water.

[0013] In the present invention, preferably, the second functional unit is covered by a cover member. In the present invention configured as described above, since the second functional unit is covered by the cover member, even if cleaning water leaks from the water supply pipe by any chance, it is possible to further prevent the second functional unit from being wetted.

[0014] Further, in the present invention, preferably, the first functional unit is a pump device that supplies cleaning water, the second functional unit is a control device for driving the pump device, and the third functional unit is a switching valve device that switches the water supply path of the cleaning water supplied from the pump device. In the present invention configured as described above, since the first functional unit is a pump device that supplies cleaning water, the second functional unit is a control device for driving the pump device, and the third functional unit is a switching valve device that switches the water supply path of the cleaning water supplied from the pump device, the pump device, the control device, and the switching valve device can be compactly housed in the toilet body. Further, since the pump device is disposed below the switching valve device and the control device, it is possible to suppress the switching valve device and the control device from shaking due to the vibration of the pump device as compared with the case where the pump device is disposed above the switching valve device and the control device.

Effects of the Invention

[0015] According to the flush toilet of the present invention, the functional device can be compactly housed in the toilet body.

Brief Description of the Drawings

[0016] [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 a state where the sanitary cleaning device of the flush toilet according to an embodiment of the present invention is removed. [Figure 3] It is a side cross-sectional view seen along line III-III of 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 viewed from obliquely above on the left side. [Figure 4B] Perspective view of the functional device of the water-washing toilet according to an embodiment of the present invention, seen from obliquely above on the right side. [Figure 5] Configuration diagram showing the water supply path through which the washing water of the water-washing toilet according to an embodiment of the present invention flows. [Figure 6] Schematic perspective view showing the arrangement of the functional device of the water-washing toilet according to an embodiment of the present invention. [Figure 7] Schematic side view showing the arrangement of the functional device of the water-washing toilet according to an embodiment of the present invention. [Figure 8] Schematic rear view showing the arrangement of the functional device of the water-washing toilet according to an embodiment of the present invention. [Figure 9] Schematic top view showing the arrangement of the functional device of the water-washing toilet according to an embodiment of the present invention.

Mode for Carrying Out the Invention

[0017] Hereinafter, with reference to the accompanying drawings, a water-washing toilet 1 according to an embodiment of the present invention will be described. First, the basic structure of the water-washing toilet 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing the water-washing toilet according to an embodiment of the present invention, FIG. 2 is a top view of the water-washing toilet in a state where the sanitary washing device according to an embodiment of the present invention is removed, and FIG. 3 is a side cross-sectional view taken along line III-III of FIG. 2. In FIG. 2, the rim water supply path, the jet water supply path, and the water supply pipe for the jet are indicated by dotted lines. When the water-washing toilet is viewed from the front, the front side will be described as "front", the back side as "rear", the left side as "left", and the right side as "right".

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Next, the arrangement of the functional devices of the flush toilet 1 according to an embodiment of the present invention will be described in detail with reference to Figures 6 to 9. Figure 6 is a schematic perspective view showing the arrangement of the functional devices of a flush toilet according to an embodiment of the present invention, Figure 7 is a schematic side view showing the arrangement of the functional devices of a flush toilet according to an embodiment of the present invention, Figure 8 is a schematic rear view showing the arrangement of the functional devices of a flush toilet according to an embodiment of the present invention, and Figure 9 is a schematic top view showing the arrangement of the functional devices of a flush toilet according to an embodiment of the present invention.

[0041] As shown in Figure 6, the pump device 34 (first functional unit) is fixed to the upper surface of the base plate 40, the control device 38 (second functional unit) is fixed to the upper surface of the pump device 34, and the switching valve device 36 (third functional unit) is fixed to the upper surface of the control device 38. Each of the pump device 34, control device 38, and switching valve device 36 is fixed by fastening members 64, which are screws. The fastening members 64 can be fastened or loosened from above. This allows each of the pump device 34, control device 38, and switching valve device 36 to be removed one by one from above during maintenance of each functional unit.

[0042] As shown in Figures 6 to 8, the pump device 34, the control device 38, and the switching valve device 36 are arranged in a nearly straight line in the vertical direction. The pump device 34, the control device 38, and the switching valve device 36 are located in the space S inside the toilet bowl body 2, in the area behind the water storage tank 42 of the tank device 4 (see Figure 7). The pump device 34, the control device 38, and the switching valve device 36 are also located in the space S inside the toilet bowl body 2 between the drain trap pipe 14 and the skirt portion 16 (see Figure 8).

[0043] As shown in Figures 7 and 8, the control device 38 is positioned above the pump device 34 in the vertical direction. The switching valve device 36 is positioned above both the control device 38 and the pump device 34 in the vertical direction. The pump device 34, the control device 38, and the switching valve device 36 are positioned so that they partially overlap each other in the vertical direction. This ensures that each functional device is stably fixed and does not shift laterally. The pump device 34 and the switching valve device 36 are connected by a downstream connecting pipe 56. The downstream connecting pipe 56 extends in the vertical direction and is positioned in parallel with the control device 38 in its vicinity.

[0044] As shown in Figure 7, the pump device 34 and the switching valve device 36 are positioned at approximately the same location in the front-rear direction. The control device 38 is positioned behind the pump device 34 and the switching valve device 36 in the front-rear direction. A downstream connecting pipe 56 is positioned in front of the control device 38. The pump device 34 is connected to an upstream connecting pipe 54 that extends forward and connects to the water storage tank 42. The switching valve device 36 is connected to a jet water supply pipe 60 that extends forward and connects to the jet water conduit 28. The control device 38 is positioned a predetermined distance D behind the connection point between the switching valve device 36 and the jet water supply pipe 60. This prevents the control device 38 from being submerged in water even if cleaning water leaks from the connection point between the switching valve device 36 and the jet water supply pipe 60. Furthermore, since the control device 38 is covered by a cover member 38a, it is possible to further prevent the control device 38 from being submerged in water.

[0045] As shown in Figure 9, the pump device 34, the control device 38, and the switching valve device 36 are arranged so that, in a top view, at least a portion of each overlaps with the others. The switching valve device 36 is located inside the outer periphery 34a of the pump device 34 and the outer periphery 38b of the control device 38 in a top view. The switching valve device 36 is also located inside the outer periphery 34a of the pump device 34 in a top view. The downstream connecting pipe 56 is located inside the outer periphery 34a of the pump device 34 in a top view. These arrangements allow the pump device 34, the control device 38, the switching valve device 36, and the downstream connecting pipe 56 to be made compact.

[0046] The following describes the operation and effects of the flush toilet 1 according to the above-described embodiment. First, according to the flush toilet 1 according to an embodiment of the present invention, the functional device comprises a pump device 34 (first functional unit), a control device 38 (second functional unit) positioned above the pump device 34, and a switching valve device 36 (third functional unit) positioned above the control device 38. Since the pump device 34, the control device 38, and the switching valve device 36 are arranged so that at least a portion of them overlap each other when viewed from above, the pump device 34, the control device 38, and the switching valve device 36 can be made compact. As a result, the pump device 34, the control device 38, and the switching valve device 36 can be compactly housed within the toilet body 2.

[0047] Furthermore, according to the flush toilet 1 of the present invention, the switching valve device 36 is fixed to the control device 38, and the control device 38 is fixed to the pump device 34. Therefore, when performing maintenance on each functional part, the pump device 34, the control device 38, and the switching valve device 36 can be removed one by one, thereby improving maintainability.

[0048] Furthermore, according to the flush toilet 1 of the present invention, the switching valve device 36 is positioned inside the outer peripheral edges 34a and 38b of the pump device 34 and control device 38 in a top view, so the pump device 34, control device 38 and switching valve device 36 can be made more compact.

[0049] Furthermore, according to the flush toilet 1 of the present invention, the switching valve device 36 is located inside the outer peripheral edge 34a of the pump device 34 in a top view, so the pump device 34, control device 38, and switching valve device 36 can be made more compact.

[0050] Furthermore, according to the embodiment of the present invention, the flush toilet 1 is equipped with a downstream connecting pipe 56 (connecting pipe) that connects the pump device 34 and the switching valve device 36, and since the downstream connecting pipe 56 is arranged in parallel with the switching valve device 36, the downstream connecting pipe 56 can be arranged without sharply bending it.

[0051] Furthermore, according to the flush toilet 1 of the present invention, the downstream connecting pipe 56 is located inside the outer peripheral edge 34a of the pump device 34 when viewed from above, so the pump device 34, control device 38, switching valve device 36 and downstream connecting pipe 56 can be made more compact.

[0052] Furthermore, according to the embodiment of the present invention, the flush toilet 1 is equipped with a jet water supply pipe 60 that extends forward from the switching valve device 36 and connects to the toilet body 2 to supply flushing water to the toilet body 2, and the control device 38 is positioned behind the switching valve device 36, so even if flushing water leaks from the water supply pipe, it is possible to prevent the control device 38 from being submerged in water.

[0053] Furthermore, according to the flush toilet 1 of the present invention, the control device 38 is covered by the cover member 38a, so even if flushing water leaks from the water supply pipe, it is possible to further prevent the control device 38 from being exposed to water.

[0054] Furthermore, according to the flush toilet 1 of the embodiment of the present invention, the first functional unit is a pump device 34 that supplies flushing water, the second functional unit is a control device 38 for driving the pump device 34, and the third functional unit is a switching valve device 36 that switches the water supply path of the flushing water supplied from the pump device 34. Therefore, the pump device 34, the control device 38, and the switching valve device 36 can be compactly housed within the toilet body 2. In addition, since the pump device 34 is positioned below the switching valve device 36 and the control device 38, vibrations of the pump device 34 can suppress the shaking of the switching valve device 36 and the control device 38 compared to the case where the pump device 34 is positioned above the switching valve device 36 and the control device 38.

[0055] In the water-flushing toilet 1 according to one embodiment of the present invention, the first, second, and third functional units are described as a pump device 34, a control device 38, and a switching valve device 36, respectively. However, the invention is not limited to this form, and in other forms, for example, the order of the pump device 34, the control device 38, and the switching valve device 36 may be changed, or other functional units may be used as the first, second, and third functional units.

[0056] Furthermore, although the flush toilet 1 according to one embodiment of the present invention has been described as a wall-mounted flush toilet, the present invention is not limited to this form, and may also be applied to a floor-standing flush toilet fixed to the floor surface.

[0057] 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]

[0058] 1: Flush toilet 2: Toilet bowl 4: Tank equipment 6: Sanitary cleaning equipment 12: Bowl section 14: Drain trap pipe 16: Skirt section 20: Rim section 22: Rim spout 24: Rim water conduit 26: Jet nozzle 28: Jet water conduit 32: Water supply valve device 34: Pumping equipment 34a: Outer edge of the pump device 36: Switching valve device 38: Control device 38a: Cover member of the control device 38b: Peripheral edge of the control device 40: Base plate 42: Water storage tank 54: Upstream connecting pipe 56: Downstream connecting pipe 58: Rim water supply pipe 60: Water supply pipe for jet 64: Fastening member D: Predetermined distance S: Space inside the toilet bowl W: Wall surface

Claims

1. A flush toilet that uses flushing water to wash away waste, 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 functional device, which is placed in the space inside the toilet bowl body and supplies flushing water to the toilet bowl body, It has, The above-mentioned functional device comprises a first functional unit and a second functional unit positioned above the first functional unit. It comprises a third functional section located above this second functional section, A flush toilet characterized in that each of the first functional unit, the second functional unit, and the third functional unit is arranged such that, in a top view, at least a portion of them overlaps with each other.

2. The flush toilet according to claim 1, wherein the third functional part is fixed to the second functional part, and the second functional part is fixed to the first functional part.

3. The flush toilet according to claim 1 or 2, wherein the third functional part is located inside the outer edges of the first functional part and the second functional part when viewed from above.

4. The flush toilet according to claim 3, wherein the third functional part is located inside the outer peripheral edge of the first functional part when viewed from above.

5. It includes a connecting pipe that connects the first functional unit and the third functional unit. The flush toilet according to claim 1, wherein the above-mentioned connecting pipe is arranged in parallel with the above-mentioned second functional unit.

6. The flush toilet according to claim 5, wherein the connecting pipe is located inside the outer edge of the first functional part when viewed from above.

7. The third functional unit extends forward from the above-mentioned third functional unit and is connected to the toilet bowl body, and is equipped with a water supply pipe that supplies flushing water to the toilet bowl body. The flush toilet according to claim 5 or 6, wherein the second functional unit is located behind the third functional unit.

8. The flush toilet according to claim 7, wherein the above-mentioned second functional part is covered by a cover member.

9. The flush toilet according to claim 1, wherein the first functional unit is a pump device for supplying flushing water, the second functional unit is a control device for driving the pump device, and the third functional unit is a switching valve device for switching the water supply channel for flushing water supplied from the pump device.

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