Water-washing toilet device

Abstract

To provide a flush toilet device that allows for easy operation of the shut-off valve while concealing it for a good appearance. [Solution] The present invention is a flush toilet device (1) equipped with a flush water tank, comprising: a flush toilet body (2) having a bowl portion (2a) for receiving waste and a drain trap pipe (2b) extending from the lower part of the bowl portion; a flush water tank (4) provided on the upper side of the flush toilet body for storing flush water to clean the bowl portion of the flush toilet body; a shut-off valve (12) disposed inside the flush water tank for switching the supply and stopping of flush water supplied from the water supply; and a branching member (14) disposed inside the flush water tank for branching the flush water that has flowed out from the shut-off valve into the flush water tank and into flush water to be supplied to a sanitary cleaning device.

Description

Technical Field

[0001] The present invention relates to a flush toilet device, and particularly to a flush toilet device provided with a wash water tank.

Background Art

[0002] Japanese Patent Application Laid-Open No. 2023-34308 (Patent Document 1) describes a flush toilet. In this flush toilet, a stop valve is attached to a water supply pipe rising from the floor surface of the toilet room, and the downstream side of this stop valve is branched, and a hose for supplying wash water to a sanitary washing device and a hose for supplying wash water to the flush toilet are connected. And these stop valves and hoses are provided near the floor surface at the rear side of the flush toilet on the side surface of the flush toilet, and are covered and hidden by a panel continuous with the skirt portion of the flush toilet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the flush toilet described in Patent Document 1, although a good appearance is obtained by hiding the stop valve etc. with a panel, since the stop valve is provided on the rear side surface of the flush toilet near the floor surface of the toilet room, there is a problem that it is difficult to operate the stop valve during maintenance etc. Further, in the flush toilet described in Patent Document 1, in the case where a water leak occurs in the stop valve or the hose connection part on the downstream side thereof, since the stop valve is covered with a panel, it is difficult to find the water leak, and there is a problem that the water leak flowing to the floor surface may stain the toilet room.

[0005] Therefore, an object of the present invention is to provide a flush toilet device that can easily operate a stop valve while hiding the stop valve to obtain a good appearance. [Means for solving the problem]

[0006] To solve the above-mentioned problems, the present invention provides a flush toilet device equipped with a flush water tank, comprising: a flush toilet body equipped with a bowl portion for receiving waste and a drain trap pipe extending from the lower part of the bowl portion; a flush water tank provided on the upper side of the flush toilet body for storing flush water for cleaning the bowl portion of the flush toilet body; a shut-off valve disposed inside the flush water tank for switching the supply and cessation of flush water supplied from the water supply; and a branching member disposed inside the flush water tank for branching the flush water that has flowed out from the shut-off valve into the flush water tank and into flush water supplied to a sanitary cleaning device.

[0007] With the present invention configured in this way, the shut-off valve is located inside the flushing water tank, which is situated above the toilet bowl body. This allows workers to easily see and operate the shut-off valve during maintenance. Furthermore, because the shut-off valve is located inside the flushing water tank, it is not visible to the user during normal use, ensuring a good appearance for the toilet bowl. In addition, because the shut-off valve is located inside the flushing water tank, even if a leak occurs, the leaked water flows into the flushing water tank, preventing soiling of the toilet floor and other surfaces.

[0008] Preferably, the present invention further includes a sanitary cleaning hose extending from a branching member and connected to a sanitary cleaning device, the sanitary cleaning hose being drawn out from a rear opening provided on the rear wall of the cleaning water tank, passing through the rear of the cleaning water tank and connected to the sanitary cleaning device.

[0009] According to the present invention configured in this way, the sanitary cleaning hose connected to the sanitary cleaning device is pulled out from a rear opening provided on the rear wall of the cleaning water tank, passes through the back of the cleaning water tank, and is connected to the sanitary cleaning device. As a result, the hose connected to the sanitary cleaning device can also be concealed from the user, and an excellent appearance for the flush toilet device can be obtained.

[0010] In the present invention, preferably, the flushing water tank is further provided with a drain valve that switches between discharging the flushing water stored in the flushing water tank to the toilet bowl body and stopping the flow, and the rear opening is provided on the opposite side of the shut-off valve from the drain valve.

[0011] With the present invention configured in this way, since the rear opening is provided on the opposite side of the stopcock from the drain valve, even if the depth of the cleaning water tank is made small, the sanitary cleaning hose can be routed without difficulty inside the cleaning water tank, making it possible to miniaturize the cleaning water tank.

[0012] In the present invention, preferably, the flushing water tank is further provided with a water supply valve that switches between supplying and stopping the flushing water flowing out from the branching member into the flushing water tank, and a drain valve that switches between discharging and stopping the flushing water stored in the flushing water tank to the toilet body, with the shut-off valve and water supply valve being located on both sides of the drain valve, respectively.

[0013] With the present invention configured in this way, the shut-off valve and the water supply valve are arranged on both sides of the drain valve, respectively, so that the shut-off valve, the water supply valve, and the drain valve can be compactly arranged without interfering with each other. As a result, the depth of the flushing water tank can be reduced, and a flush toilet device with a good appearance can be provided.

[0014] In the present invention, preferably, the water supply valve has a water supply valve inlet for introducing cleaning water that opens toward the shut-off valve in approximately the width direction of the cleaning water tank.

[0015] With the present invention configured in this way, the water inlet of the water supply valve that allows cleaning water to flow in is open toward the shut-off valve in the substantially width direction of the cleaning water tank, so that the hose connected to the water inlet can be connected to the shut-off valve without bending it with a small radius of curvature.

[0016] In the present invention, preferably, the water stop plug outlet through which the washing water flows out opens in the substantially width direction of the washing water tank and in the direction opposite to the water supply valve.

[0017] According to the present invention configured as described above, since the water stop plug outlet through which the washing water flows out opens in the substantially width direction of the washing water tank and in the direction opposite to the water supply valve, the hose connected to the water supply valve inlet becomes longer, and the hose can be bent more gently and connected to the water stop plug, preventing kinking of the hose.

Effect of the Invention

[0018] According to the flushing toilet device of the present invention, while concealing the water stop plug to obtain a good appearance, the water stop plug can be easily operated.

Brief Description of the Drawings

[0019] [Figure 1] FIG. 1 is a side view of a flushing toilet device according to an embodiment of the present invention, showing a part in cross section. [Figure 2] FIG. 22 is a front cross-sectional view of a washing water tank provided in the flushing toilet device according to the embodiment of the present invention. [Figure 3] FIG. 25 is a plan cross-sectional view of a washing water tank provided in the flushing toilet device according to the embodiment of the present invention. [Figure 4] FIG. 28 is a perspective view of the flushing toilet device according to the embodiment of the present invention as viewed from obliquely below and rearward.

Mode for Carrying Out the Invention

[0020] Next, a flushing toilet device according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view of a flushing toilet device according to an embodiment of the present invention, showing a part in cross section.

[0021] As shown in FIG. 1, a flush toilet device 1 according to an embodiment of the present invention includes a flush toilet main body 2 having a bowl portion 2a, a washing water tank 4 for storing washing water for washing the bowl portion 2a, and a sanitary washing device 6 placed on the upper surface of the flush toilet main body 2. The flush toilet device 1 of the present embodiment is configured such that by operating a button 4a provided on the upper surface of the washing water tank 4, the washing water stored in the washing water tank 4 is discharged to the bowl portion 2a of the flush toilet main body 2, and the bowl portion 2a is washed.

[0022] The flush toilet main body 2 includes a bowl portion 2a for receiving dirt and a drain trap pipe 2b extending from the lower part of the bowl portion 2a. In addition, a rim water outlet 2c from which washing water is discharged is provided at the upper end portion of the bowl portion 2a. Further, in the present embodiment, the flush toilet main body 2 is a full skirt type flush toilet whose side surface is covered by a skirt portion 2d.

[0023] The washing water discharged from the washing water tank 4 is discharged from the rim water outlet 2c through a water guiding path provided inside the flush toilet main body 2. The washing water discharged from the rim water outlet 2c flows down while swirling in the bowl portion 2a to wash the dirt receiving surface of the bowl portion 2a.

[0024] Note that the flush toilet device 1 of the present embodiment is a wash-down type flush toilet without a jet water outlet, but the present invention can be applied to any type of flush toilet such as a siphon jet type flush toilet having a jet water outlet.

[0025] The drain trap pipe 2b is a conduit that extends from the bottom of the bowl section 2a toward the rear of the toilet bowl body 2. The drain trap pipe 2b is composed of an upward-sloping pipe that extends diagonally upward from the bottom of the bowl section 2a and a downward-sloping pipe that extends downward from the downstream end of the upward-sloping pipe. The height of the top between the upward-sloping pipe and the downward-sloping pipe determines the water level W of the water accumulated in the bowl section 2a. The water accumulated in the bowl section 2a seals the drain trap pipe 2b. The downstream end of the downward-sloping pipe of the drain trap pipe 2b is connected to a drain pipe (not shown), and flushing water and waste are discharged from the drain trap pipe 2b.

[0026] The flushing water tank 4 is mounted on the upper rear of the toilet bowl body 2. By opening and closing the drain valve 8 (Figure 2) located inside the flushing water tank 4, the flow of flushing water from the tank 4 to the toilet bowl body 2 can be switched on and off.

[0027] Furthermore, the flushing water tank 4 is formed in a generally box shape, with its width being longer than its depth, and its width is approximately the same as the width of the rear upper surface of the toilet bowl body 2. That is, the flushing water tank 4 has a front wall surface 4b that extends in the width direction on the front side of the toilet bowl body 2, side wall surfaces 4c that extend in the front-rear direction on both sides of the front wall surface 4b, and a rear wall surface 4d that extends in the width direction on the rear side of the toilet bowl body 2. Since the width of the flushing water tank 4 and the width of the rear upper surface of the toilet bowl body 2 are approximately the same, the side wall surface 4c of the flushing water tank 4 and the upper side surface of the toilet bowl body 2 are flush and smoothly connected.

[0028] Next, the internal structure of the cleaning water tank 4 will be described with reference to Figures 2 and 3. Figure 2 is a front cross-sectional view of the flushing water tank 4 provided in the flush toilet device 1 according to an embodiment of the present invention. Figure 3 is a plan cross-sectional view of the flushing water tank 4 provided in the flush toilet device 1 according to an embodiment of the present invention.

[0029] As shown in Figures 2 and 3, the cleaning water tank 4 contains a drain valve 8, a water supply valve 10, a shut-off valve 12, and a branching member 14. In this embodiment, the shut-off valve 12, drain valve 8, and water supply valve 10 located inside the cleaning water tank 4 are arranged in this order from left to right in the width direction of the cleaning water tank 4. That is, in this embodiment, the shut-off valve 12 and water supply valve 10 are located on both sides of the drain valve 8, which is located in the center of the width direction of the cleaning water tank 4.

[0030] The drain valve 8 is a valve body positioned approximately in the center in the width direction inside the flush water tank 4, and is configured to switch between discharging the flush water stored in the flush water tank 4 to the toilet body 2 and stopping the flow. In this embodiment, the drain valve 8 is a direct-acting valve body, and by pulling it upward, the drain port 4e (Figure 2) provided on the bottom surface of the flush water tank 4 is opened, and the flush water stored in the flush water tank 4 is discharged to the toilet body 2.

[0031] Furthermore, in this embodiment, the drain valve 8 is configured to be raised by the user pressing a button 4a (Figure 2) provided on the upper surface of the cleaning water tank 4. However, the drain valve 8 may also be configured to be opened by, for example, operating a lever handle (not shown) provided on the side wall surface 4c of the cleaning water tank 4, or by a motor (not shown) for driving the drain valve.

[0032] Furthermore, as shown in Figure 2, an overflow pipe 8a extending vertically is provided on the side of the drain valve 8. When the water level of the flushing water in the flushing water tank 4 rises above a predetermined level, the flushing water in the flushing water tank 4 flows in from the upper end of the overflow pipe 8a, bypassing the drain valve 8 and discharging the flushing water into the toilet bowl body 2. In addition, the overflow pipe 8a is configured to receive a portion of the flushing water that flows out from the water supply valve 10, and after the bowl section 2a has finished flushing, refill water flows into the bowl section 2a via the overflow pipe 8a.

[0033] As shown in Figure 2, the water supply valve 10 is located inside the cleaning water tank 4 and is configured to switch the supply and stop of cleaning water supplied from the water supply into the cleaning water tank 4. In this embodiment, the cleaning water supplied from the water supply is configured to be supplied to the water supply valve 10 via the stopcock 12 and the branching member 14. That is, in this embodiment, the cleaning water that flows out from the branching member 14 flows into the water supply valve 10, and the supply and stop of this cleaning water into the cleaning water tank 4 is switched by the water supply valve 10.

[0034] Furthermore, the water supply valve 10 is equipped with a float 10a, and is configured such that when the water level in the cleaning water tank 4 drops, the float 10a descends and the water supply valve 10 opens. When the water supply valve 10 is open, the supplied cleaning water flows into the cleaning water tank 4 through a descending pipe 10b that extends vertically downward from the water supply valve 10. The water supply valve 10 is also supported above the overflow pipe 8a by a water supply valve fixing member 10c.

[0035] As shown in Figure 3, the shut-off valve 12 is a faucet connected to a water supply pipe 16 extending from the rear wall (not shown) of the flush toilet unit 1. It is configured so that the supply of tap water to the flush toilet unit 1 can be stopped by turning the knob 12a during maintenance of the flush toilet unit 1. Specifically, a notch 4f is provided in the upper part of the rear wall 4d of the flush water tank 4, and the shut-off valve 12 is connected to the water supply pipe 16 that extends into the inside of the flush water tank 4 through the notch 4f. Furthermore, during maintenance, etc., by removing the lid 4g (Figure 2) of the flush water tank 4, the worker can easily operate the shut-off valve 12 inside the flush water tank 4 to stop the supply of tap water. Note that during normal use of the flush toilet unit 1, the shut-off valve 12 is always open.

[0036] The branching member 14 is positioned inside the cleaning water tank 4 and is configured to branch the cleaning water flowing out from the stopcock 12 into cleaning water that flows into the cleaning water tank 4 and cleaning water that is supplied to the sanitary cleaning device 6. As shown in Figure 2, in this embodiment, the branching member 14 is configured in a substantially T-shape overall, and a water passage (not shown) is formed inside. That is, the branching member 14 consists of a main body portion 14a that extends vertically and a leg portion 14b that extends horizontally from the center of the main body portion 14a.

[0037] The main body 14a of the branching member 14 has a water supply hose connection port 14c and a sanitary washing hose connection port 14d that are positioned vertically and open horizontally. A water supply valve connection port 14e is formed at the tip of the leg portion 14b of the branching member 14. This water supply valve connection port 14e, the water supply hose connection port 14c, and the sanitary washing hose connection port 14d are aligned in a straight line in plan view. In other words, the central axes of the water supply hose connection port 14c, the sanitary washing hose connection port 14d, and the water supply valve connection port 14e are oriented parallel to each other.

[0038] Furthermore, the water supply valve connection port 14e at the tip of the leg portion 14b is connected to the water supply valve inlet 10d of the water supply valve 10. The water supply hose 18 extending from the stopcock 12 and the sanitary cleaning hose 20 connected to the sanitary cleaning device 6 are connected to the water supply hose connection port 14c and the sanitary cleaning hose connection port 14d of the main body portion 14a, respectively, in an orderly fashion. Therefore, the portions of the water supply hose 18 and the sanitary cleaning hose 20 connected to the branching member 14 are oriented in the same direction as the water supply valve inlet 10d of the water supply valve 10. Also, as shown in Figure 3, the water supply valve inlet 10d opens in the approximate width direction of the cleaning water tank 4 toward the side where the stopcock 12 is located.

[0039] As a result, the cleaning water flowing out from the shut-off valve 12 flows into the branching member 14 through the water supply hose 18, and a portion of the cleaning water flows into the water supply valve 10 through the leg portion 14b of the branching member 14. In addition, a portion of the cleaning water that flows into the branching member 14 flows into the sanitary cleaning device 6 through the sanitary cleaning hose 20 connected to the main body portion 14a. Specifically, as shown in Figure 3, the water supply hose 18 connects the shut-off valve outlet 12b of the shut-off valve 12 to the water supply hose connection port 14c provided on the main body portion 14a of the branching member 14. Also, as shown in Figure 2, the sanitary cleaning hose 20 is connected to the sanitary cleaning hose connection port 14d provided on the main body portion 14a of the branching member 14.

[0040] As shown in Figure 3, in this embodiment, the shut-off valve outlet 12b of the shut-off valve 12 opens horizontally toward the left in the width direction of the cleaning water tank 4. The water supply hose 18 connected to the shut-off valve outlet 12b also extends horizontally toward the left from the shut-off valve 12. On the other hand, the water supply hose connection port 14c provided on the main body portion 14a of the branching member 14 also opens horizontally toward the left in the width direction of the cleaning water tank 4.

[0041] Therefore, the water supply hose 18 connecting the shut-off valve outlet 12b and the water supply hose connection port 14c extends within the cleaning water tank 4 in a roughly U-shape when viewed from above. That is, since the shut-off valve outlet 12b opens in the width direction of the cleaning water tank 4, opposite to the water supply valve 10, the water supply hose 18 can connect the shut-off valve 12 and the water supply valve 10 by drawing a gentle curve (a curve with a large radius of curvature) inside the narrow cleaning water tank 4. Also, as described above, since the water supply hose connection port 14c and the water supply valve connection port 14e of the branching member 14 are oriented parallel to each other, the branching member 14 to which the water supply hose 18 is connected in a gentle curve can be connected to the water supply valve 10 in the same direction. Note that the water supply hose 18 is connected to the water supply valve inlet 10d of the water supply valve 10 via the branching member 14, so the water supply hose 18 is the hose connected to the water supply valve inlet 10d.

[0042] As shown in Figure 2, the sanitary cleaning hose 20 is connected to the sanitary cleaning hose connection port 14d of the branching member 14. A portion of the cleaning water flowing in from the water supply hose connection port 14c of the branching member 14 flows into the sanitary cleaning hose 20 via the sanitary cleaning hose connection port 14d. The sanitary cleaning hose 20 extends to the sanitary cleaning device 6 (Figure 1) which is placed on the upper surface of the toilet bowl body 2.

[0043] Next, referring to Figure 4, we will explain the routing of the sanitary cleaning hose 20. Figure 4 is a perspective view of the flush toilet device 1, seen from the rear and diagonally below.

[0044] First, as shown in Figure 4, a recess 4h is formed on the rear wall surface 4d of the cleaning water tank 4, projecting inward from the cleaning water tank 4. This recess 4h is elongated vertically and extends vertically from the top of the cleaning water tank 4 to the bottom of the cleaning water tank 4. A rear opening 4i is provided at the upper end of this recess 4h. This rear opening 4i opens upward at the upper end of the recess 4h, connecting the inside and outside of the cleaning water tank 4 above the water level of the cleaning water inside the tank 4. Furthermore, as shown in Figure 3, the rear opening 4i is positioned on the opposite side of the stopcock 12 in the width direction of the cleaning water tank 4 relative to the drain valve 8. In other words, in this embodiment, the stopcock 12 and the rear opening 4i are provided on both sides of the drain valve 8, which is located approximately in the center in the width direction of the cleaning water tank 4.

[0045] On the other hand, as shown in Figure 3, the sanitary cleaning hose 20 extending from the sanitary cleaning hose connection port 14d of the branching member 14 curves gently inside the cleaning water tank 4, forming a roughly U-shape in plan view, and is then pulled out to the outside of the cleaning water tank 4 through a rear opening 4i provided at the upper end of the recess 4h. In other words, in this embodiment, the sanitary cleaning hose 20 extends in a roughly U-shape inside the cleaning water tank 4 from the branching member 14 in front of the drain valve 8, surrounding the drain valve 8, and is pulled out through a rear opening 4i provided on the rear wall surface 4d of the cleaning water tank 4. By making the sanitary cleaning hose 20 take a roundabout route in this way, the hose can be routed inside the narrow cleaning water tank 4 without sharply bending it.

[0046] Furthermore, as shown in Figure 4, the sanitary cleaning hose 20, which is drawn out to the outside of the flushing water tank 4, extends downward through the recess 4h and is drawn into the interior of the flush toilet body 2 from the rear side. The sanitary cleaning hose 20 then passes through a circular insertion opening 2e provided on the rear upper surface of the flush toilet body 2 and is connected to the sanitary cleaning device 6 (Figure 1) which is mounted on the flush toilet body 2. In this way, the sanitary cleaning hose 20 is drawn out from the rear opening 4i provided on the rear wall surface 4d of the flushing water tank 4, passes through the rear of the flushing water tank 4 and is connected to the sanitary cleaning device 6.

[0047] Furthermore, in this embodiment, the sanitary cleaning hose 20 extending from the insertion opening 2e passes through a recess 4h provided in the rear wall surface 4d of the cleaning water tank 4. Therefore, even when the back of the flush toilet device 1 is in contact with the wall surface (not shown) of the toilet room, space for the sanitary cleaning hose 20 to pass through can be reliably secured. In this embodiment, the electrical cable 22 that supplies power to the sanitary cleaning device 6 is also connected to the sanitary cleaning device 6 through the insertion opening 2e.

[0048] Next, the operation of the flush toilet device 1 according to an embodiment of the present invention will be described. First, when a user of the flush toilet device 1 operates the operating switch (not shown) of the sanitary cleaning device 6, tap water is supplied to the sanitary cleaning device 6 through the water supply pipe 16, stopcock 12, water supply hose 18, branching member 14, and sanitary cleaning hose 20, and cleaning water is sprayed from the nozzle (not shown) of the sanitary cleaning device 6. Next, when the user operates the button 4a of the cleaning water tank 4, the drain valve 8 is opened, and the cleaning water stored in the cleaning water tank 4 flows into the flush toilet body 2 through the drain port 4e and is discharged from the rim outlet 2c. This cleans the bowl portion 2a.

[0049] When the flushing water in the flushing water tank 4 is discharged from the drain port 4e, the water level in the flushing water tank 4 decreases, and consequently, the float 10a of the water supply valve 10 also descends. The descent of the float 10a opens the water supply valve 10, and tap water flows into the water supply valve 10 through the water supply pipe 16, stopcock 12, water supply hose 18, and branching member 14. The flushing water that has flowed into the water supply valve 10 flows into the flushing water tank 4 from the lower end of the descending pipe 10b of the water supply valve 10. As the water level in the flushing water tank 4 rises due to the inflow of flushing water, the float 10a of the water supply valve 10 also rises, and when the water level rises to a predetermined level, the water supply valve 10 is closed, and one toilet flush is completed.

[0050] In this embodiment of the flush toilet device 1, refilling is not performed to supply flushing water to the bowl portion 2a after the drain valve 8 is closed. However, if refilling is to be performed, a refill pipe (not shown) can be provided so that, for example, a portion of the flushing water that flows into the water supply valve 10 flows into the overflow pipe 8a of the drain valve 8. In this case, the refill pipe (not shown) can be provided to connect the water supply valve 10 and the upper part of the overflow pipe 8a, similar to the water supply valve fixing member 10c. Then, the flushing water that flows into the overflow pipe 8a due to the refilling flows into the bowl portion 2a of the flush toilet body 2, raising the water level in the bowl portion 2a. Since the overflow pipe 8a bypasses the drain valve 8 and communicates with the drain outlet 4e, flushing water flows into the bowl portion 2a even after the drain valve 8 is closed.

[0051] On the other hand, when performing maintenance on the flush toilet system 1, the worker can expose the shut-off valve 12 inside the flush water tank 4 by removing the lid 4g on the top surface of the flush water tank 4. Furthermore, since the shut-off valve 12 is located at the top of the flush water tank 4, the worker can easily turn the knob 12a of the shut-off valve 12 to stop the water supply and begin maintenance. In addition, since the shut-off valve 12 is located inside the flush water tank 4, even if a leak occurs nearby, the leaked water will flow into the flush water tank 4, and the floor of the toilet room will not be soiled.

[0052] In the flush toilet device 1 of the present invention, the shut-off valve 12 is located inside the flush water tank 4, which is provided on the upper side of the flush toilet body 2. Therefore, during maintenance, etc., workers can easily see and operate the shut-off valve 12. Furthermore, because the shut-off valve 12 is located inside the flush water tank 4, it cannot be seen by the user during normal use, thus ensuring a good appearance for the flush toilet device 1. Moreover, because the shut-off valve 12 is located inside the flush water tank 4, even if a leak occurs, the leaked water flows into the flush water tank 4, preventing soiling of the toilet room floor, etc.

[0053] Furthermore, according to the flush toilet device 1 of this embodiment, the sanitary cleaning hose 20 connected to the sanitary cleaning device 6 is pulled out from a rear opening 4i provided on the rear wall surface 4d of the flush water tank 4, passes through the back of the flush water tank 4, and is connected to the sanitary cleaning device 6. As a result, the hose connected to the sanitary cleaning device 6 can also be concealed from the user, and the flush toilet device 1 can be given an excellent appearance.

[0054] Furthermore, according to the flush toilet device 1 of this embodiment, since the rear opening 4i is provided on the opposite side of the stopcock 12 from the drain valve 8, even if the depth of the flush water tank 4 is made small, the sanitary cleaning hose 20 can be routed without difficulty inside the flush water tank 4, making it possible to miniaturize the flush water tank 4.

[0055] Furthermore, in the flush toilet device 1 of this embodiment, since the shut-off valve 12 and the water supply valve 10 are arranged on both sides of the drain valve 8, the shut-off valve 12, the water supply valve 10, and the drain valve 8 can be compactly arranged without interfering with each other. As a result, the depth of the flush water tank 4 can be made small, and a flush toilet device 1 with a good appearance can be provided.

[0056] Furthermore, according to the flush toilet device 1 of this embodiment, the water supply valve inlet 10d of the water supply valve 10 that brings in flushing water is open toward the shut-off valve 12 in the substantially width direction of the flushing water tank 4, so that the hose (water supply hose 18) connected to the water supply valve inlet 10d can be connected to the shut-off valve 12 without bending it with a small radius of curvature.

[0057] Furthermore, according to the flush toilet device 1 of this embodiment, the shut-off valve outlet 12b, which discharges flushing water from the shut-off valve 12, opens in the direction opposite to the water supply valve 10, approximately in the width direction of the flushing water tank 4. As a result, the water supply hose 18 connected to the water supply valve inlet 10d becomes longer, and the water supply hose 18 can be bent more gently when connected to the shut-off valve 12, preventing kinking of the water supply hose 18.

[0058] Preferred embodiments of the present invention have been described above, but various modifications can be made to the embodiments described above. In particular, in the embodiments described above, a recess is provided on the rear wall surface of the cleaning water tank, and a sanitary cleaning hose is inserted through a rear opening provided at the upper end of this recess. In contrast, as a modification, the present invention can also be configured such that a vertical pipe is provided extending upward from the bottom surface of the cleaning water tank through the inside of the cleaning water tank, and the sanitary cleaning hose is inserted through an opening at the upper end of this vertical pipe, thereby bringing the sanitary cleaning hose out to the outside. [Explanation of Symbols]

[0059] 1 Flush toilet device 2 Flush toilet body 2a Bowl section 2b Drain trap pipe 2c Rim spout 2D skirt part 2e Through opening 4. Washing water tank 4a button 4b Front wall 4c Side wall 4d back wall 4e Drain 4f notch 4g Lid 4h recess 4i back opening 6. Sanitary cleaning equipment 8. Drain valve 8a Overflow pipe 10 Water supply valve 10a Float 10b downcomer 10c Water supply valve fixing member 10d Water supply valve inlet 12. Shut-off valve 12a Knob 12b Water stop valve outlet 14 Branch Member 14a Main body 14b Legs 14c Water supply hose connection port 14d Sanitary cleaning hose connection port 14e Water supply valve connection port 16. Water supply piping 18. Water supply hose 20 Sanitary cleaning hoses 22 Electrical Cables

Claims

1. A flush toilet system equipped with a flushing water tank, A flush toilet body comprising a bowl section for receiving waste and a drain trap pipe extending from the lower part of the bowl section, A flush water tank is provided on the upper side of the toilet bowl and stores flush water for cleaning the bowl portion of the toilet bowl. Inside this cleaning water tank is a shut-off valve that switches the supply of cleaning water from the water tap on and off. A branching member is placed inside the above-mentioned cleaning water tank and divides the cleaning water that has flowed out from the above-mentioned stopcock into cleaning water that flows into the above-mentioned cleaning water tank and cleaning water that is supplied to the sanitary cleaning device. A flush toilet device characterized by having the following features.

2. Furthermore, the flush toilet device according to claim 1, further comprising a sanitary cleaning hose extending from the branching member and connected to a sanitary cleaning device, wherein the sanitary cleaning hose is drawn out from a rear opening provided on the rear wall of the cleaning water tank and connected to the sanitary cleaning device through the rear of the cleaning water tank.

3. Furthermore, the flushing water tank is provided with a drain valve that switches between discharging and stopping the flushing water stored in the flushing water tank to the flushing toilet body, and the rear opening is provided on the opposite side of the stopcock from the drain valve, as described in claim 2.

4. Furthermore, the flushing water tank is provided with a water supply valve that switches between supplying and stopping the flushing water that has flowed out from the branching member into the flushing water tank, and a drain valve that switches between discharging and stopping the flushing water stored in the flushing water tank to the flushing toilet body, and the shut-off valve and the water supply valve are respectively arranged on both sides of the drain valve, as described in claim 1.

5. The flush toilet device according to claim 4, wherein the water supply valve has a water supply valve inlet for introducing flushing water that opens toward the stopcock in substantially the width direction of the flushing water tank.

6. The toilet flushing device according to claim 5, wherein the shut-off valve outlet from which flushing water is discharged from the shut-off valve is open in the direction opposite to the water supply valve, in substantially the width direction of the flushing water tank.

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