JP6988254B2 - Washing water tank device - Google Patents

Description

The disclosed embodiment relates to a wash water tank device.

Conventionally, a washing water tank device for storing washing water used in a washing toilet bowl is known (see, for example, Patent Document 1). The wash water tank device supplies the wash water stored in the tank to the bowl part of the flush toilet to discharge the filth, and then returns the water level in the bowl part that has dropped due to the discharge of the filth to the initial water level. , Washing water is replenished to the bowl part.

Further, in the above-mentioned washing water tank device, washing water is supplied from the water supply pipe to the overflow pipe provided in the tank, and washing water is supplied to the bowl portion of the washing toilet through the overflow pipe. ing.

Japanese Unexamined Patent Publication No. 2016-030994

By the way, the water supply pipe described above may be fixed to the overflow pipe by using a fixing portion such as a clip in a state where the water discharge port is located near the opening formed on the upper end side of the overflow pipe. In such a case, for example, when the fixing portion is arranged so as to be interposed between the water supply pipe and the overflow pipe, the separation distance (that is, the height) from the opening of the overflow pipe to the water supply pipe is the fixed portion. It will increase by the height of. As a result, there is a possibility that the storage space for accommodating the water supply pipe and the overflow pipe in the tank becomes large.

One aspect of the embodiment is to provide a wash water tank device capable of reducing the storage space of the water supply pipe and the overflow pipe in the tank.

The wash water tank device according to one embodiment has a tank for storing wash water and a tank extending in the vertical direction in the tank, and wash water exceeding the full water level is formed on the upper end side in the tank. The water supply unit is provided with an overflow pipe that overflows the opening and discharges the water to the toilet bowl, and a water supply unit that supplies wash water to the toilet bowl via the overflow pipe. The water supply unit discharges the wash water supplied from the water supply source. A water supply pipe that supplies wash water to the toilet bowl by supplying water from the water port to the opening of the overflow pipe, and a base end portion connected to the water supply pipe while the tip end being connected to the overflow pipe. The water supply pipe is provided with a fixing portion for fixing the water supply pipe to the overflow pipe, and the fixing portion is characterized in that the base end portion is displaced with respect to the water supply pipe in a plan view.

In this way, the fixed portion is arranged so that the base end portion is displaced from the water supply pipe in the plan view, for example, the fixed portion is arranged so as to be overlapped with respect to the water supply pipe in the side view. Is possible. This makes it possible to reduce the separation distance (height) from the overflow pipe to the water supply pipe by the height at which the fixed portions are overlapped, thereby reducing the storage space for the water supply pipe and the overflow pipe. Can be done.

Further, the water supply portion is formed so as to project laterally from the water supply pipe, and is characterized by including a protrusion to which the base end portion of the fixed portion is connected.

As a result, the base end portion of the fixed portion can be reliably displaced from the water supply pipe in a plan view, and thus the storage space for the water supply pipe and the overflow pipe can be reduced in size.

Further, the water supply pipe is characterized in that the water discharge port is fixed to the overflow pipe so as to be located above the opening of the overflow pipe.

Thereby, for example, even when the water supply pipe is arranged above the overflow pipe, the water supply pipe is arranged so as not to block the opening of the overflow pipe, so that the overflow capacity of the overflow pipe can be increased. It can be suppressed from being lowered by the water supply pipe.

Further, the water supply portion is characterized by being formed in the water supply pipe and provided with a contact portion that abuts on the peripheral edge of the opening of the overflow pipe when fixed to the overflow pipe. As a result, the water supply pipe can be stably fixed to the overflow pipe.

Further, the fixing portion includes a locking portion formed on the base end portion side, and the water supply portion includes a locked portion to which the locking portion is locked. As a result, it is possible to prevent the fixed portion from falling out of the water supply portion.

Further, the fixing portion is characterized by being a clip for fixing the water supply pipe to the overflow pipe by sandwiching the overflow pipe. This makes it possible to fix the water supply pipe to the overflow pipe with a simple configuration.

According to one aspect of the embodiment, in the washing water tank device, it is possible to reduce the size of the storage space for the water supply pipe and the overflow pipe in the tank.

FIG. 1 is a perspective view showing a toilet device provided with a washing water tank device according to an embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is an enlarged perspective view of the water supply unit and the overflow pipe. FIG. 4 is an exploded perspective view of the water supply unit. FIG. 5 is a plan view of the water supply unit and the overflow pipe. FIG. 6 is a side view of the water supply unit and the overflow pipe. FIG. 7 is an enlarged partial cross-sectional view of the water supply section. FIG. 8 is a diagram showing how the fixed portion is inserted into the insertion hole of the protruding portion. FIG. 9 is an enlarged side view showing a fixed portion according to a modified example.

Hereinafter, embodiments of the washing water tank device disclosed in the present application will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments shown below.

(Embodiment)
FIG. 1 is a perspective view showing a toilet device provided with a washing water tank device according to an embodiment. In addition, in order to make the explanation easy to understand, FIG. 1 defines a three-dimensional Cartesian coordinate system in which the X-axis direction, the Y-axis direction, and the Z-axis direction which are orthogonal to each other are defined and the Z-axis positive direction is the vertical upward direction. It is shown in the figure. Such a Cartesian coordinate system may also be shown in other drawings used in the description below. Further, the figures shown in FIGS. 1 and 2 and thereafter are schematic views.

As shown in FIG. 1, the toilet device 1 includes a toilet bowl main body (hereinafter, may be referred to as “toilet bowl”) 2 and a washing water tank device 10. The toilet bowl 2 includes a bowl portion 3, a rim portion 4, a drain trap pipeline 5, and a headrace 6.

The bowl portion 3 is formed in a bowl shape capable of receiving filth. The rim portion 4 is formed on the upper edge of the bowl portion 3. For example, a toilet seat (not shown) is provided on the upper portion of the rim portion 4.

Further, a headrace 6 is connected to the rim portion 4. The headrace 6 includes a first spout 6a and a second spout 6b. When the toilet bowl is washed, the washing water discharged from the drain port 13 of the washing water tank device 10 flows into the headrace 6. Then, the washing water of the headrace 6 is discharged to the bowl portion 3 through the first and second spouts 6a and 6b, and the bowl portion 3 is washed while swirling. The number of spouts in the headrace 6 is not limited to two, and may be one or three or more.

The drain trap pipeline 5 is connected to the bowl portion 3. Specifically, the drain trap pipeline 5 includes an inlet portion 5a and a reservoir portion 5b. The inlet portion 5a is provided so as to be continuous with the bottom portion of the bowl portion 3, and the washing water from the bowl portion 3 is allowed to flow into the drain trap pipeline 5.

The water storage portion 5b is located on the downstream side of the inlet portion 5a and has a shape in which a predetermined amount of washing water is stored. The downstream side of the water reservoir 5b is connected to a drainage channel (not shown), so that the washing water flowing into the water reservoir 5b is discharged from the drainage channel. In this way, the drain trap pipeline 5 prevents the odor and the like from the drain pipe from flowing back to the bowl portion 3 side by collecting the washing water in the reservoir portion 5b and functioning as a sealing water.

The toilet bowl 2 is a so-called siphon type that draws in filth in the bowl portion 3 by utilizing the siphon action and discharges it from the drain trap pipe line 5. Therefore, in the toilet bowl 2, when the toilet bowl is washed, the washing water is drawn into the drain trap pipeline 5 together with the filth due to the siphon action. The water level will drop.

If the water level of the pooled water drops below the predetermined water level in the pooled water portion 5b, the pooled water does not function as a sealing water, and odors and the like may flow back to the bowl portion 3 side. Therefore, the washing water tank device 10 replenishes the bowl portion 3 with washing water in order to return the water level of the accumulated water to the initial water level after discharging the filth by washing the toilet bowl.

The washing water tank device 10 is installed in the upper part behind the toilet bowl 2 (in the negative direction of the Y axis). The washing water tank device 10 includes a tank 11 and a lid 12. The tank 11 is a rectangular parallelepiped container having an open upper surface, and stores washing water for washing the bowl portion 3 of the toilet bowl 2. The drainage port 13 described above is provided on the bottom surface of the tank 11. The internal configuration of the tank 11 will be described later with reference to FIG. Further, the shape of the tank 11 shown in FIG. 1 and the installation position of the tank 11 with respect to the toilet bowl 2 are merely examples and are not limited.

The lid 12 is detachably attached to the upper part of the tank 11 so as to cover the entire upper surface of the tank 11.

Further, an operation unit 20 is provided at an appropriate position in the toilet room where the toilet device 1 is installed. The operation unit 20 includes an operation button 21 to which a user inputs a start instruction or the like to start cleaning the toilet bowl. The operation unit 20 outputs a signal indicating a start instruction input from the user via the operation button 21 to a control device (not shown). As the operation unit 20, for example, a remote controller can be used, but the operation unit 20 is not limited to this. Further, although not shown, a motion sensor may be provided, and a signal indicating a start instruction may be output based on the output of the motion sensor.

FIG. 2 is a sectional view taken along line II-II of FIG. In FIG. 2, the washing water tank device 10 is mainly shown, and the lid 12 is omitted for convenience of understanding.

As shown in FIG. 2, the washing water tank device 10 includes a water supply device 30, a drainage device 50, a manual operation unit 60, an electric operation unit 70, and an overflow pipe 80, which are arranged in the tank 11. Being housed.

The water supply device 30 supplies washing water into the tank 11. For example, the water supply device 30 includes a float 31, and supplies or stops the supply of wash water into the tank 11 according to the vertical fluctuation of the float 31. That is, when the washing water in the tank 11 is drained to the toilet bowl 2 (see FIG. 1) by the operation of the draining device 50 described later, the water level of the washing water is lowered and the float 31 is lowered. When the float 31 descends, a water supply valve (not shown) opens, and the washing water supplied from the water supply source is discharged into the tank 11. After that, when the water level in the tank 11 rises, the float 31 also rises, whereby the above-mentioned water supply valve closes and the water discharge into the tank 11 is stopped. As a result, the water level of the washing water in the tank 11 after washing the toilet bowl is maintained at a predetermined water level.

The water supply device 30 further includes a water supply unit 40 for replenishing wash water. The water supply unit 40 replenishes the bowl portion 3 of the toilet bowl 2 with washing water in order to return the water level of the pooled water in the pooled water portion 5b to the initial water level after cleaning the toilet bowl. In the water supply unit 40 according to the present embodiment, the cleaning water is supplied to the overflow pipe 80 in the tank 11, and the cleaning water is supplied to the bowl portion 3 of the toilet bowl 2 via the overflow pipe 80. The detailed configuration of the water supply unit 40 will be described later with reference to FIGS. 3 and 3.

The drainage device 50 includes a drainage valve 51 and wires 52 and 53. The drain valve 51 is configured to be movable up and down, and the drain port 13 is opened and closed by such vertical movement. One end of the wires 52 and 53 is connected to the drain valve 51. The other end of the wire 52 is connected to the manual operation unit 60.

In the manual operation unit 60, when the operation lever 61 is operated, a gear (not shown) rotates to wind up the wire 52. As a result, the drain valve 51 is pulled by the wire 52 and rises, and the drain port 13 is opened. By opening the drain port 13, the washing water in the tank 11 is drained to the toilet bowl 2 (see FIG. 1), that is, the toilet bowl is washed.

Further, the other end side of the wire 53 is connected to the electric operation unit 70. Specifically, the electric operation unit 70 includes a drive motor (not shown), and the wire 53 is connected to the drive motor.

Then, when a signal indicating a start instruction to start cleaning the toilet bowl is output from the operation unit 20 to the control device, the control device drives the drive motor of the electric operation unit 70 and winds up the wire 53. As a result, the drain valve 51 is pulled by the wire 53 and rises, the drain port 13 is opened, and the toilet bowl is washed. The above-mentioned control device may be provided in the electric operation unit 70.

The overflow pipe 80 extends vertically in the tank 11. An opening 81 is formed on the upper end side of the overflow pipe 80, while the lower end side communicates with the drain port 13. Therefore, the overflow pipe 80 overflows the washing water exceeding the full water level into the opening 81 in the tank 11 and discharges it to the toilet bowl 2 through the drain port 13.

By the way, in the washing water tank device 10, various devices and members such as the electric operation unit 70 are housed in the tank 11 as described above. However, since the storage space in the tank 11 is limited, it has been required to reduce the size of the equipment and members housed in the tank 11.

Therefore, in the washing water tank device 10 according to the present embodiment, the storage space for accommodating the water supply unit 40 and the overflow pipe 80 can be reduced in size in the tank 11.

Such a configuration will be described in detail with reference to FIGS. 3 and later. FIG. 3 is an enlarged perspective view of the water supply unit 40 and the overflow pipe 80. As shown in FIG. 3, the water supply unit 40 is fixedly attached to the opening 81 on the upper end side of the overflow pipe 80.

FIG. 4 is an exploded perspective view of the water supply unit 40. As shown in FIGS. 3 and 4, the water supply unit 40 includes a water supply hose 41, a water supply pipe 42, a fixing portion 43, a protruding portion 45, an insertion portion 46 (see FIG. 4), and a contact portion 47. And.

One end of the water supply hose 41 is connected to the water supply device 30 (see FIG. 2), while the other end is connected to the water supply pipe 42. Therefore, the water supply hose 41 supplies the washing water supplied from the water supply source via the water supply device 30 to the water supply pipe 42. As the water supply hose 41, for example, a flexible hose that can be flexed can be used, but the water supply hose 41 is not limited to this.

The water supply pipe 42 has a water discharge port 42a formed at an end opposite to the end to which the water supply hose 41 is connected. As shown in FIG. 3, the water supply pipe 42 is arranged at a position where the water discharge port 42a faces the opening 81 of the overflow pipe 80. Then, the water supply pipe 42 supplies the washing water supplied from the water supply hose 41 to the opening 81 of the overflow pipe 80 from the water discharge port 42a, and supplies the washing water to the toilet bowl 2 (see FIG. 1).

The fixing portion 43 is a member for fixing the water supply pipe 42 to the overflow pipe 80. As the fixing portion 43, for example, a metal clip can be used. The fixing portion 43 is not limited to being made of metal, and may be made of resin or the like.

As shown in FIG. 4, the fixing portion 43 is, for example, a flat plate-shaped member. The fixing portion 43 is a long member, and is formed by being curved like a crank in a side view. Then, in the fixing portion 43, the base end portion 43a is connected to the water supply pipe 42, while the tip end portion 43b is connected to the overflow pipe 80. At this time, the base end portion 43a of the fixing portion 43 is connected to the water supply pipe 42 in a state of being displaced.

FIG. 5 is a plan view of the water supply unit 40 and the overflow pipe 80. In FIG. 5, since the base end portion 43a is hidden and cannot be seen, it is shown by a broken line. As shown in FIG. 5, in the fixing portion 43, the base end portion 43a is arranged so as to be offset from the water supply pipe 42 in a plan view.

Specifically, when the line passing through the center of the base end portion 43a and parallel to the axis line 42e of the water supply pipe 42 is the center line 43e of the base end portion 43a, the center line 43e of the base end portion 43a is the water supply pipe 42. It is arranged so as to be offset from the axis 42e by a predetermined distance A. As a result, the storage space of the water supply pipe 42 and the overflow pipe 80 of the water supply unit 40 can be reduced in size. This will be described with reference to FIG.

FIG. 6 is a side view of the water supply unit 40 and the overflow pipe 80. In FIG. 6, the overflow pipe 80 is shown in cross section for convenience of understanding.

Here, for example, if the base end portion 43a is not displaced with respect to the water supply pipe 42 in a plan view, the fixing portion 43 will be arranged between the water supply pipe 42 and the overflow pipe 80. Therefore, as shown by an imaginary line in FIG. 6, the separation distance C (height C) from the peripheral edge 82 of the opening 81 of the overflow pipe 80 to the upper end of the water supply pipe 42 increases by the amount of the fixed portion 43.

On the other hand, in the present embodiment, the fixing portion 43 is arranged so that the base end portion 43a is displaced from the water supply pipe 42 in the plan view. Therefore, as shown in FIG. 6, the fixing portion 43 is arranged in the side view. Can be arranged so as to overlap the water supply pipe 42 in the height direction (Z-axis direction).

As a result, the separation distance B (height B) from the overflow pipe 80 to the upper end of the water supply pipe 42 can be lowered by the height at which the fixing portions 43 are overlapped (B <C). That is, the storage space for accommodating the water supply pipe 42 and the overflow pipe 80 can be miniaturized.

Returning to FIG. 4 and continuing the description of the fixing portion 43, the locking portion 43c is formed on the base end portion 43a side of the fixing portion 43. The locking portion 43c will be described later with reference to FIGS. 7 and 8.

The tip portion 43b of the fixing portion 43 is formed so as to be bifurcated, for example, and when connected to the overflow pipe 80, the bifurcated portion is bent so as to face the overflow pipe 80 side. As a result, in the fixed portion 43, the bifurcated portion of the tip portion 43b is caught by the overflow pipe 80, and the fixed portion 43 is securely connected to the overflow pipe 80.

As shown in FIGS. 4 and 5, the projecting portion 45 is formed so as to project laterally from the water supply pipe 42. Then, the base end portion 43a of the fixing portion 43 described above is connected to the protruding portion 45.

In this way, since the proximal end portion 43a is connected to the protruding portion 45 projecting laterally from the water supply pipe 42, the proximal end portion 43a of the fixed portion 43 is referred to the water supply pipe 42 in a plan view. It is possible to reliably displace the water supply pipe 42 and the like, so that the storage space for the water supply pipe 42 and the like can be reduced in size.

Here, the connection between the fixed portion 43 and the protruding portion 45 will be described. As shown in FIG. 4, the locking portion 43c described above is formed in the fixing portion 43. The locking portion 43c is formed by, for example, an appropriate position of the base end portion 43a of the fixing portion 43 being cut out in a U shape by punching or the like, and the U-shaped portion being bent. More specifically, the locking portion 43c is a so-called "return" formed by bending so that the tip portion 43b side rises from the base end portion 43a side as a starting point.

FIG. 7 is an enlarged partial cross-sectional view of the water supply unit 40. In addition, in FIG. 7, the portion of the protrusion 45 to which the fixing portion 43 is connected is shown as a cross section.

As shown in FIG. 7, the protruding portion 45 is formed with an insertion hole 45a into which the fixing portion 43 can be inserted. Then, inside the insertion hole 45a, a locked portion 45c to which the locking portion 43c of the fixing portion 43 is locked is formed. The locked portion 45c is formed in a convex shape in a side view, for example, and includes a tapered portion 45c1. This makes it possible to facilitate the insertion of the fixing portion 43 into the insertion hole 45a.

FIG. 8 is a diagram showing how the fixing portion 43 is inserted into the insertion hole 45a of the protruding portion 45. As shown by the arrow D1 in FIG. 8, when the fixing portion 43 is inserted into the insertion hole 45a with the base end portion 43a at the head, the locking portion 43c abuts on the tapered portion 45c1 of the locked portion 45c.

When the fixing portion 43 is further inserted into the insertion hole 45a, as shown by the alternate long and short dash line in FIG. 8, the locking portion 43c moves upward while elastically deforming in the arrow D2 direction following the shape of the tapered portion 45c1. When it moves and then passes through the tapered portion 45c1, it returns to its original shape by elastic force as shown in FIG. 7 and is locked to the locked portion 45c.

As described above, since the locking portion 43c is gradually deformed following the shape of the tapered portion 45c1, it is difficult for the locking portion 43c to be caught in the locked portion 45c, and thus the fixing portion 43 can be easily inserted into the insertion hole 45a. can.

Further, as shown in FIG. 7, since the locking portion 43c of the fixing portion 43 that has returned to the original shape is locked to the locked portion 45c, the fixing portion 43 falls off from the protruding portion 45. Can be suppressed.

As shown in FIG. 4, the insertion portion 46 is a flat plate-shaped member extending below the protrusion 45. Further, the insertion portion 46 is formed so as to face the fixing portion 43 connected to the protrusion 45. Then, when the water supply pipe 42 is fixed to the overflow pipe 80, the insertion portion 46 is inserted through the opening 81 of the overflow pipe 80 as shown in FIG.

As a result, the fixing portion 43 and the insertion portion 46 can sandwich the overflow pipe 80, and thus the water supply pipe 42 can be reliably fixed to the overflow pipe 80. Further, since the fixing portion 43 is a clip that sandwiches the overflow pipe 80 with the insertion portion 46, the water supply pipe 42 can be fixed to the overflow pipe 80 with a simple configuration.

The contact portion 47 is formed in the water supply pipe 42 and has a shape (for example, a brim shape) extending in the horizontal direction with respect to the water supply pipe 42. The contact portion 47 is not limited to the above-mentioned brim shape, and may have other shapes such as a rectangular parallelepiped shape or a spherical shape.

As shown in FIG. 6, the contact portion 47 contacts the peripheral edge 82 of the opening 81 of the overflow pipe 80 when the water supply pipe 42 is fixed to the overflow pipe 80. Specifically, the water supply pipe 42 is fixed to the overflow pipe 80 in a state where the bottom surface of the flange-shaped contact portion 47 extending in the horizontal direction is in contact with the peripheral edge 82 of the opening 81 of the overflow pipe 80. As a result, rattling of the water supply pipe 42 with respect to the overflow pipe 80 can be suppressed, and thus the water supply pipe 42 can be stably fixed to the overflow pipe 80.

Further, when the water supply pipe 42 is attached to the overflow pipe 80, for example, the water supply pipe 42 is moved downward toward the opening 81 of the overflow pipe 80. At this time, in the water supply pipe 42, after the insertion portion 46 is inserted through the opening 81, the contact portion 47 abuts on the peripheral edge 82 of the overflow pipe 80, and the downward movement of the water supply pipe 42 is restricted. Will be. As described above, the contact portion 47 according to the present embodiment can also function as a stopper.

As described above, when the water supply pipe 42 is fixed to the overflow pipe 80, the water supply pipe 42 is arranged so that the water discharge port 42a is located above the opening 81 of the overflow pipe 80 (see FIG. 6). In other words, the water supply pipe 42 is arranged so that the water discharge port 42a is separated upward from the opening 81 of the overflow pipe 80 by a predetermined distance. As described above, in the present embodiment, even when the water supply pipe 42 is arranged above the overflow pipe 80, the water supply pipe 42 is arranged so as not to block the opening 81 of the overflow pipe 80. In other words, the flow path of the overflow pipe 80 was not narrowed. As a result, it is possible to prevent the overflow capacity of the overflow pipe 80 from being lowered by the water supply pipe 42.

As described above, the washing water tank device 10 according to the embodiment includes a tank 11, an overflow pipe 80, and a water supply unit 40. The tank 11 stores wash water. The overflow pipe 80 is extended in the tank 11 in the vertical direction, and the washing water exceeding the full water level in the tank 11 overflows into the opening 81 formed on the upper end side and is discharged to the toilet bowl 2. The water supply unit 40 replenishes the toilet bowl 2 with washing water via the overflow pipe 80.

The water supply unit 40 includes a water supply pipe 42 and a fixing unit 43. The water supply pipe 42 supplies the washing water supplied from the water supply source from the spout 42a to the opening 81 of the overflow pipe 80 to supply the washing water to the toilet bowl 2. The fixing portion 43 fixes the water supply pipe 42 to the overflow pipe 80 by connecting the base end portion 43a to the water supply pipe 42 and connecting the tip end portion 43b to the overflow pipe 80. The fixing portion 43 is arranged so that the base end portion 43a is displaced from the water supply pipe 42 in a plan view. As a result, the storage space for the water supply pipe 42 and the overflow pipe 80 in the tank 11 can be reduced in size.

(Modification example)
Next, a modification will be described. In the following description, the same parts as those already described will be designated by the same reference numerals as those already described, and duplicate description will be omitted.

FIG. 9 is an enlarged side view showing the fixing portion 43 according to the modified example. As shown in FIG. 9, in the fixing portion 43 according to the modified example, the locking portion 143c is formed by bending, for example, bending the base end portion 43a of the fixing portion 43. This makes it possible to form the locking portion 143c relatively easily in the modified example.

Although not shown, the locking portion 143c is locked to the locked portion 45c of the protruding portion 45 when the fixing portion 43 is attached to the protruding portion 45. Thereby, as in the embodiment, it is possible to prevent the fixing portion 43 from falling off from the protruding portion 45.

In the above, the water supply pipe 42, the protruding portion 45, the insertion portion 46, and the contact portion 47 are integrally formed, but the present invention is not limited to this, and all or part of the water supply pipe 42 is formed separately. You may. Further, although the water supply pipe 42 and the like and the fixing portion 43 are formed separately, they may be formed integrally.

Further, in the above, the toilet bowl 2 is a siphon type, but is not limited to this, and is, for example, a so-called wash-off type in which filth is washed away by the running water action due to the drop of the wash water in the bowl portion 3. May be good.

Further effects and variations can be easily derived by those skilled in the art. For this reason, the broader aspects of the invention are not limited to the particular details and representative embodiments described and described above. Thus, various modifications can be made without departing from the spirit or scope of the overall concept of the invention as defined by the appended claims and their equivalents.

1 Toilet device 2 Toilet bowl 10 Washing water tank device 11 Tank 40 Water supply part 42 Water supply pipe 43 Fixed part 42a Spout 43a Base end part 43b Tip part 45 Protruding part 43c, 143c Locking part 45c Locked part 47 Contact part 80 Overflow pipe 81 opening

Claims (6)

A tank for storing wash water and
An overflow pipe that extends vertically in the tank and overflows the washing water that exceeds the full water level into the opening formed on the upper end side and discharges it to the toilet bowl.
A water supply unit for supplying wash water to the toilet bowl via the overflow pipe is provided.
The water supply unit
A water supply pipe that supplies washing water supplied from a water supply source to the opening of the overflow pipe from a spout to supply washing water to the toilet bowl.
The base end portion is connected to the water supply pipe, while the tip end portion is connected to the overflow pipe to provide a fixing portion for fixing the water supply pipe to the overflow pipe.
The fixed part is
A wash water tank characterized in that the water supply pipe and the overflow pipe are arranged so as to be offset from each other in a plan view, and the base end portion is arranged so as to be offset from the water supply pipe in a plan view. Device. The water supply unit
The washing water tank device according to claim 1, further comprising a protruding portion formed so as to project laterally from the water supply pipe and to which the base end portion of the fixing portion is connected. The water supply pipe
The washing water tank device according to claim 1 or 2, wherein the water discharge port is fixed to the overflow pipe so as to be located above the opening of the overflow pipe. The water supply unit
The invention according to any one of claims 1 to 3, further comprising a contact portion formed in the water supply pipe and in contact with the peripheral edge of the opening of the overflow pipe when fixed to the overflow pipe. Washing water tank device. The fixed part is
A locking portion formed on the base end side is provided.
The water supply unit
The washing water tank device according to any one of claims 1 to 4, further comprising a locked portion to which the locking portion is locked. The fixed part is
The washing water tank device according to any one of claims 1 to 5, wherein the water supply pipe is a clip for fixing the water supply pipe to the overflow pipe by sandwiching the overflow pipe.

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