Water-washable toilet

Abstract

The present invention aims to provide a flush toilet that allows the water supply pipe to be compactly housed within the toilet bowl body, and that allows the water supply pipe to be smoothly inserted into and removed from the toilet bowl body. [Solution] The present invention comprises a toilet bowl body 2 having 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 surrounding the bowl portion 12 and the drain trap pipe 14 from the outside; a water supply pipe 52 (water supply pipe) for supplying washing water from a water source for a sanitary washing device; and a water supply valve device 32 (internal member) arranged in the space S inside the toilet bowl body 2 surrounded by the skirt portion 16, wherein the water supply pipe 52 for the sanitary washing device is housed in the space S inside the toilet bowl body 2 in a state where it is bent in a circular shape around the water supply valve device 32.

Description

Technical Field

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[0001] The present invention relates to a flushing toilet.

Background Art

[0002] Conventionally, as described in Patent Document 1, there is known a flushing toilet equipped with a sanitary washing device, which has a water supply pipe for supplying washing water from a water supply source to the sanitary washing device. In such a flushing toilet, the water supply pipe is housed inside the toilet body and is concealed by the skirt portion of the toilet body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in a flushing toilet such as that of Patent Document 1, when many functional devices such as a pump device and a control device are housed inside the toilet body, it becomes impossible to secure a space for housing the water supply pipe. If the water supply pipe is forcibly housed inside the toilet body, there is a risk that the water supply pipe will kink. Also, there is a problem that when detaching and attaching the sanitary washing device, the water supply pipe cannot be smoothly inserted into and removed from the toilet body.

[0005] Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to provide a flushing toilet capable of compactly housing a water supply pipe inside a toilet body and smoothly inserting and removing the water supply pipe with respect to the toilet body.

Means for Solving the Problems

[0006] To solve the above-mentioned problems, the present invention provides 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 water supply pipe for supplying flushing water from a water source; and an internal member arranged in the space inside the toilet bowl body surrounded by the skirt portion, wherein the water supply pipe is housed in the space inside the toilet bowl body in a circularly bent state around the internal member. In the present invention configured in this way, the water supply pipe is housed in the space inside the toilet bowl body in a circularly bent state centered on the internal component. This allows the water supply pipe to be compactly housed inside the toilet bowl body and to be smoothly inserted into and removed from the toilet bowl body.

[0007] In the present invention, preferably, the water supply pipe is bent to form a vertically elongated circular shape. In this configuration of the present invention, the water supply pipe is bent into a vertically elongated circular shape, thus preventing abrupt bending of the water supply pipe.

[0008] Furthermore, in the present invention, preferably, the water supply pipe is bent in a circular shape that extends in the front-to-back direction. In the present invention configured in this way, the water supply pipe is bent into a circular shape that extends in the front-to-back direction, allowing the water supply pipe to be inserted into and removed from the toilet bowl more smoothly.

[0009] In the present invention, preferably, a sanitary cleaning device is attached to and detached from the toilet bowl body, the downstream side of the water supply pipe is connected to the sanitary cleaning device, and the bending radius of the water supply pipe after the sanitary cleaning device is attached to the toilet bowl body is set to be larger than the bending radius of the water supply pipe before the sanitary cleaning device is attached to the toilet bowl body. In the present invention configured as described above, the toilet has a sanitary cleaning device that can be attached to and detached from the toilet bowl body. The downstream side of the water supply pipe is connected to the sanitary cleaning device, and the bending radius of the water supply pipe after the sanitary cleaning device is attached to the toilet bowl body is set to be larger than the bending radius of the water supply pipe before the sanitary cleaning device is attached to the toilet bowl body. Therefore, the water supply pipe can be smoothly inserted into and removed from the toilet bowl body when attaching or detaching the sanitary cleaning device.

[0010] Furthermore, in the present invention, preferably, the bending radius of the upper portion of the water supply pipe is set to be approximately constant before and after the sanitary cleaning device is attached to the toilet bowl body, while the bending radius of the lower portion of the water supply pipe changes. In the present invention configured as described above, the bending radius of the upper portion of the water supply pipe is set to be approximately constant before and after the sanitary cleaning device is attached to the toilet bowl body, while the bending radius of the lower portion of the water supply pipe changes. This allows the water supply pipe to be inserted into and removed from the toilet bowl body more smoothly when attaching or detaching the sanitary cleaning device.

[0011] In the present invention, preferably, after the sanitary cleaning device is attached to the toilet bowl body, the water supply pipe is housed so as to be located above the lower end of the skirt portion of the toilet bowl body. In the present invention configured in this way, after the sanitary cleaning device is attached to the toilet bowl body, the water supply pipe is housed so as to be positioned above the lower end of the skirt portion of the toilet bowl body, thereby preventing the water supply pipe from being visible from the outside.

[0012] Furthermore, in the present invention, preferably, before the sanitary cleaning device is attached to the toilet bowl body, the water supply pipe is housed so that the opening at its downstream end faces forward. In the present invention configured in this way, before the sanitary cleaning device is attached to the toilet bowl body, the water supply pipe is housed so that the opening at its downstream end faces forward, making it easier to connect the water supply pipe to the sanitary cleaning device when attaching the sanitary cleaning device to the toilet bowl body.

[0013] In the present invention, preferably, a regulating means for regulating the movement range of the water supply pipe is provided. In the present invention configured as described above, since a regulating means for regulating the movement range of the water supply pipe is provided, the water supply pipe can be inserted into and removed from the toilet body more smoothly.

[0014] Also, in the present invention, preferably, the internal member is a water supply valve device that supplies washing water from a water supply source to the toilet body. In the present invention configured as described above, since the internal member is a water supply valve device that supplies washing water from a water supply source to the toilet body, the water supply pipe can be compactly accommodated in the toilet body together with the water supply valve device.

Effect of the Invention

[0015] According to the flush toilet of the present invention, the water supply pipe can be compactly accommodated in the toilet body, and the water supply pipe can be smoothly inserted into and removed from 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 the state where the sanitary washing 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 the 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 seen from obliquely 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 seen from obliquely above on the right side. [Figure 5] It is a configuration diagram showing a water supply path through which washing water of the flush toilet according to an embodiment of the present invention flows. [Figure 6A] It is a side view of the state before the sanitary washing device of the flush toilet according to an embodiment of the present invention is attached. [Figure 6B]A side view of the state after attaching the hygienic washing device of the water-washed toilet according to an embodiment of the present invention. [Figure 7A] In the water-washed toilet according to an embodiment of the present invention shown in FIG. 6A, it is a partially enlarged view of the water supply valve device and each water supply pipe. [Figure 7B] In the water-washed toilet according to an embodiment of the present invention shown in FIG. 6B, it is a partially enlarged view of the water supply valve device and each water supply pipe. [Figure 8] It is a schematic side view showing a first modification example of the regulating means of the water-washed toilet according to an embodiment of the present invention. [Figure 9] It is a schematic side view showing a second modification example of the regulating means of the water-washed toilet according to an embodiment of the present invention. [Figure 10] It is a schematic side view showing a third modification example of the regulating means of the water-washed toilet according to an embodiment of the present invention. [Figure 11] It is a schematic rear view showing a fourth modification example of the regulating means of the water-washed toilet according to an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0017] Hereinafter, the water-washed toilet 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings. First, the basic structure of the water-washed 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 a water-washed toilet according to an embodiment of the present invention, FIG. 2 is a top view of the state where the hygienic washing device of the water-washed toilet 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 channel, the jet water channel, and the jet water supply pipe are shown by dotted lines. In this specification, when the water-washed 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 6a, a washing nozzle (not shown) mounted to be movable back and forth from the main body, a water supply pipe 6b extending rearward from the main body 6a to supply washing water to the washing nozzle, a toilet seat (not shown) rotatably mounted to the main body, and a toilet seat cover rotatably mounted to the main body 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 inside 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, with reference to Figures 6A to 7B, the state of the water supply pipe 52 for the sanitary cleaning device before and after the installation of the sanitary cleaning device 6 of the flush toilet 1 according to one embodiment of the present invention will be described in detail. Figure 6A is a side view of a flush toilet before the installation of the sanitary cleaning device according to one embodiment of the present invention, Figure 6B is a side view of a flush toilet after the installation of the sanitary cleaning device according to one embodiment of the present invention, and Figures 7A and 7B are enlarged partial views of the water supply valve device and each water supply pipe in the flush toilet according to one embodiment of the present invention shown in Figures 6A and 6B, respectively.

[0041] As shown in Figure 6A, the sanitary bidet 6 is positioned in front of the toilet bowl 2 before being attached to the toilet bowl 2. The water supply pipe 6b of the sanitary bidet 6 extends rearward from the main body 6a of the sanitary bidet 6. The upstream end of the water supply pipe 6b of the sanitary bidet 6 is provided with a connection part 6c having a screw thread on its outer circumference. The downstream end of the water supply pipe 52 for the sanitary bidet is provided with a connection part 52a having a cap nut. The water supply pipe 6b of the sanitary bidet 6 and the water supply pipe 52 for the sanitary bidet 6 are connected by screwing the connection parts 6c and 52a together. The opening of the connection part 52a of the water supply pipe 52 for the sanitary bidet 6 faces forward before the sanitary bidet 6 is attached to the toilet bowl 2. This makes it easier to connect the connection part 52a of the water supply pipe 52 for the sanitary bidet 6 and the connection part 6c of the water supply pipe 6b of the sanitary bidet 6.

[0042] The water supply valve device 32 (internal component) is fixed to the base plate 40. The water supply pipe 52 for the sanitary washing device is arranged around this water supply valve device 32. Specifically, the water supply pipe 52 for the sanitary washing device is housed in the space S inside the toilet bowl body 2, bent in a vertically elongated circular shape around the water supply valve device 32. The water supply pipe 52 for the sanitary washing device is also bent in a circular shape that extends in the front-to-back direction. A connector 52b with a cap nut is provided at the upstream end of the water supply pipe 52 for the sanitary washing device. This connector 52b is connected to a connector 32a provided on the rear side of the water supply valve device 32.

[0043] As shown in Figure 6B, the sanitary cleaning device 6 is mounted on the upper surface of the toilet bowl body 2 after being attached to it. The water supply pipe 6b of the sanitary cleaning device 6 extends downward from the main body 6a of the sanitary cleaning device 6. Each connection part 6c, 52a abuts against the front surface of the control device 38 (regulating means), restricting the backward movement of the water supply pipe 52 for the sanitary cleaning device. The water supply pipe 52 for the sanitary cleaning device also abuts against the bottom surface of the water supply pipe 44 (regulating means) for the tank, restricting its upward movement. Furthermore, the water supply pipe 52 for the sanitary cleaning device abuts against the upper surface of the base plate 40 (regulating means), restricting its downward movement.

[0044] Because the water supply pipe 52 for the sanitary washing device is restricted from moving backward by the front of the control device 38, it bends in a larger vertical circle than before the sanitary washing device 6 was attached to the toilet bowl body 2. The radius of the bend of the water supply pipe 52 for the sanitary washing device after the sanitary washing device 6 is attached to the toilet bowl body 2 is larger than before the attachment. Also, because the water supply pipe 52 for the sanitary washing device is restricted from moving downward by the upper surface of the base plate 40, it is positioned above the lower end of the skirt portion 16 of the toilet bowl body 2.

[0045] As shown in Figures 7A and 7B, before and after the sanitary cleaning device 6 is attached to the toilet bowl body 2, the upward movement of the water supply pipe 52 for the sanitary cleaning device is restricted by the bottom surface of the water supply pipe 44 for the tank, so the bending radius R1 of the upper part of the water supply pipe 52 for the sanitary cleaning device remains almost constant. In contrast, the bending radius of the lower part of the water supply pipe 52 for the sanitary cleaning device is R2 before the sanitary cleaning device 6 is attached to the toilet bowl body 2, and after attachment, it becomes a bending radius R3 which is larger than R2 (R3 > R2).

[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 water supply pipe 52 (water supply pipe) for the sanitary washing device is housed in the space S inside the toilet body 2 in a state where it is bent in a circular shape around the water supply valve device 32 (internal member). Therefore, the water supply pipe 52 for the sanitary washing device can be compactly housed inside the toilet body 2, and the water supply pipe 52 for the sanitary washing device can be smoothly inserted into and removed from the toilet body 2.

[0047] Furthermore, according to the flush toilet 1 of the present invention, the water supply pipe 52 for the sanitary washing device is bent into a vertically elongated circular shape, which prevents the water supply pipe 52 for the sanitary washing device from bending sharply.

[0048] Furthermore, according to the flush toilet 1 of the present invention, the water supply pipe 52 for the sanitary washing device is bent in a circular shape that extends in the front-to-back direction, so that the water supply pipe 52 for the sanitary washing device can be inserted into and removed from the toilet body 2 more smoothly.

[0049] Furthermore, according to the flush toilet 1 of the present invention, it has a sanitary cleaning device 6 that can be attached to and detached from the toilet bowl body 2, and the downstream side of the water supply pipe 52 for the sanitary cleaning device is connected to the sanitary cleaning device 6, and the bending radius R3 of the water supply pipe 52 for the sanitary cleaning device after the sanitary cleaning device 6 is attached to the toilet bowl body 2 is set to be larger than the bending radius R2 of the water supply pipe 52 for the sanitary cleaning device before the sanitary cleaning device 6 is attached to the toilet bowl body 2, so that the water supply pipe 52 for the sanitary cleaning device can be smoothly inserted into and removed from the toilet bowl body 2 when attaching and detaching the sanitary cleaning device 6.

[0050] Furthermore, according to the flush toilet 1 of the embodiment of the present invention, the bending radius R1 of the upper portion of the water supply pipe 52 for the sanitary washing device is set to be almost constant before and after the sanitary washing device 6 is attached to the toilet bowl body 2, while the bending radii R2 and R3 of the lower portion of the water supply pipe 52 for the sanitary washing device are set to change. Therefore, when attaching or detaching the sanitary washing device 6, the water supply pipe 52 for the sanitary washing device can be inserted into and removed from the toilet bowl body 2 more smoothly.

[0051] Furthermore, according to the flush toilet 1 of the present invention, after the sanitary washing device 6 is attached to the toilet bowl body 2, the water supply pipe 52 for the sanitary washing device is housed so as to be located above the lower end of the skirt portion 16 of the toilet bowl body 2, thereby preventing the water supply pipe 52 for the sanitary washing device from being visible from the outside.

[0052] Furthermore, according to the flush toilet 1 of the present invention, before the sanitary washing device 6 is attached to the toilet body 2, the water supply pipe 52 for the sanitary washing device is housed so that the opening of the connection portion 52a at its downstream end faces forward. This makes it easier to connect the water supply pipe 52 for the sanitary washing device to the water supply pipe 6b of the sanitary washing device 6 when attaching the sanitary washing device 6 to the toilet body 2.

[0053] Furthermore, according to the embodiment of the present invention, the flush toilet 1 is equipped with restricting means (control device 38, water supply pipe 44 for tank, base plate 40) that restrict the range of movement of the water supply pipe 52 for the sanitary cleaning device, so that the water supply pipe 52 for the sanitary cleaning device can be inserted into and removed from the toilet body 2 more smoothly.

[0054] Furthermore, according to the flush toilet 1 of the present invention, the internal component is a water supply valve device 32 that supplies flushing water from the water source to the toilet body 2, so the water supply pipe 52 for the sanitary flushing device can be compactly housed inside the toilet body 2 together with the water supply valve device 32.

[0055] In the water-flushing toilet 1 according to one embodiment of the present invention, the case in which the internal component is a water supply valve device 32 has been described, but the invention is not limited to this form, and in other forms, the internal component may be a pump device 34, a control device 38, or a switching valve device 36, or other internal components other than these.

[0056] Next, with reference to Figures 8 to 11, a modified example of a regulating means for a flush toilet according to one embodiment of the present invention will be described. Figures 8 to 10 are schematic side views showing first to third modified examples of the toilet flushing control device according to one embodiment of the present invention. Figure 11 is a schematic rear view showing a fourth modified example of the toilet flushing control device according to one embodiment of the present invention. These first to fourth modifications are variations of the regulating means in the embodiments described above. Only the parts that differ from the embodiments described above will be explained, and similar configurations, operations, and effects will not be described.

[0057] First, as shown in Figure 8, in the first modified example, the water supply valve device 32 is provided with a ring member 80 as a regulating means. The ring member 80 is fixed to the connection portion 32a of the water supply valve device 32. The ring member 80 has a through hole through which the water supply pipe 52 for the sanitary cleaning device passes. The inner diameter of the through hole in the ring member 80 is set to be larger than the outer diameter of the water supply pipe 52 for the sanitary cleaning device, and smaller than the outer diameter of the connection portion 52b of the water supply pipe 52 for the sanitary cleaning device. As a result, the connection portion 52a of the water supply pipe 52 for the sanitary cleaning device comes into contact with the ring member 80, preventing the water supply pipe 52 for the sanitary cleaning device from moving further downward.

[0058] Next, as shown in Figure 9, in the second modified example, the water supply valve device 32 is provided with a wire member 82 as a regulating means. The wire member 82 comprises a straight portion 82a that extends in a straight line and a C-ring portion 82b that is formed in a C-ring shape. The wire member 82 is fixed to the water supply valve device 32 in a state that extends diagonally upward to the rear. The inner diameter of the C-ring portion 82b of the wire member 82 is set to be larger than the outer diameter of the water supply pipe 52 for the sanitary cleaning device and smaller than the connection portion 52b of the water supply pipe 52 for the sanitary cleaning device. As a result, the connection portion 52a of the water supply pipe 52 for the sanitary cleaning device comes into contact with the C-ring portion 82b, preventing the water supply pipe 52 for the sanitary cleaning device from moving further downward.

[0059] Next, as shown in Figure 10, in the third modified example, the water supply valve device 32 is provided with a guide member 84 as a regulating means. The guide member 84 comprises a first guide member 84a extending diagonally upward to the rear, a second guide member 84b extending diagonally upward to the front, and a third guide member 84c extending to the rear. The first guide member 84a, the second guide member 84b, and the third guide member 84c are fixed to the water supply valve device 32. The first guide member 84a, the second guide member 84b, and the third guide member 84c are arranged with circumferential spacing around the water supply valve device 32. As a result, the water supply pipe 52 for the sanitary washing device moves in a circular motion around the water supply valve device 32.

[0060] Next, as shown in Figure 11, in the fourth modified example, the water supply valve device 32 is provided with a guide member 86 as a regulating means. The guide member 86 is fixed to the water supply valve device 32 and extends downward from the water supply valve device 32. A notch 86a extending downward is provided in the left-right center of the guide member 86. The water supply pipe 52 for the sanitary cleaning device passes through this notch 86a, preventing the water supply pipe 52 for the sanitary cleaning device from moving in the left-right direction.

[0061] The regulatory means according to the first to fourth modifications described above can also produce similar effects and benefits to those achieved by the regulatory means in the embodiment described above.

[0062] 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.

[0063] 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]

[0064] 1: Flush toilet 2: Toilet bowl 4: Tank equipment 6: Sanitary cleaning equipment 6a: Main body of the sanitary cleaning device 6b: Water supply pipe for sanitary cleaning equipment 6c: Connection point for the water supply pipe of the sanitary cleaning device 8: Shut-off valve 10: Water supply pipe 12: Bowl section 14: Drain trap pipe 16: Skirt section 32: Water supply valve device 32a: Connection part of the water supply valve device 34: Pumping equipment 36: Switching valve device 38: Control device 40: Base plate 42: Water storage tank 44: Water supply pipe for tank 52: Water supply pipe for sanitary cleaning equipment 52a: Connection part for water supply pipe of sanitary cleaning equipment 52b: Connection part for water supply pipe of sanitary cleaning equipment 54: Upstream connecting pipe 56: Downstream connecting pipe 58: Rim water supply pipe 60: Water supply pipe for jet 80: Ring component 82: Wire component 82a: Straight section of wire member 82b: C-ring portion of wire component 84: Guide member 84a: First guide member 84b: Second guide member 84c: Third guide member 86: Guide member 86a: Notch in guide member R1~R3: Bending radius of water supply pipe for sanitary cleaning equipment S: Space inside the toilet bowl W: Wall surface

Claims

1. 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 water supply pipe for supplying washing water from the water source, An internal component is placed in the space within the toilet bowl body surrounded by the above-mentioned skirt portion, It has, A flush toilet characterized in that the water supply pipe is housed in the space inside the toilet bowl body in a circularly bent state centered on the internal component.

2. The flush toilet according to claim 1, wherein the water supply pipe is bent to form a vertically elongated circular shape.

3. The flush toilet according to claim 1 or 2, wherein the water supply pipe is bent to form a circular shape extending in the front-to-back direction.

4. The toilet bowl has a sanitary cleaning device that can be attached to and detached from the toilet bowl body, The downstream end of the above water supply pipe is connected to the above sanitary cleaning device. The flush toilet according to claim 1, wherein the bending radius of the water supply pipe after the sanitary cleaning device is attached to the toilet bowl body is set to be larger than the bending radius of the water supply pipe before the sanitary cleaning device is attached to the toilet bowl body.

5. The flush toilet according to claim 4, wherein, before and after the above-mentioned sanitary cleaning device is attached to the toilet bowl body, the bending radius of the upper portion of the water supply pipe is set to be substantially constant, and the bending radius of the lower portion of the water supply pipe is set to change.

6. The flush toilet according to claim 4 or 5, wherein, after the above-mentioned sanitary cleaning device is attached to the toilet bowl body, the water supply pipe is housed so as to be located above the lower end of the skirt portion of the toilet bowl body.

7. The flush toilet according to claim 4, wherein, before the above-mentioned sanitary cleaning device is attached to the toilet bowl body, the water supply pipe is housed so that the opening at its downstream end faces forward.

8. The flush toilet according to claim 1, further comprising a restricting means for restricting the range of movement of the above-mentioned water supply pipe.

9. The flush toilet according to claim 1, wherein the above-mentioned internal component is a water supply valve device that supplies flushing water from a water source to the toilet bowl body.

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