JP2011064008A - Washing water supply device and washing water tank equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing water supply device capable of preventing a float from causing failure in its operation due to adhesion of water scale and scale, and preventing improper water supply and improper water cut-off; and to provide a washing water tank equipped with the same. <P>SOLUTION: This washing water supply device 20 includes a water supply part having a water supply pipe 22 and a water supply valve 24 for switching the washing water to be supplied from the water supply pipe between its discharge into the washing water tank and its cut-off, a small tank 28 installed in the water supply part, the float 26 provided in the small tank and having a sliding part 26k sliding in the vertical direction for the small tank in accordance with fluctuation of level of the washing water in the small tank, and a lever arm 30 having one end part attached to the water supply valve and the other end part attached to the float and moving vertically together with the float to switch operation of the water supply valve between discharge and cut-off. The sliding part of the float is constituted to position below a level for water cut-off of the washing water in the washing water tank. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning water supply device and a cleaning water tank having the same, and more particularly to a cleaning water supply device for supplying cleaning water to a cleaning water tank of a toilet and a cleaning water tank having the same.

Conventionally, as a washing water supply device for supplying washing water to a flushing water tank of a toilet bowl, for example, as described in Patent Document 1, washing water is supplied during drainage of washing water from the washing water tank to the flush toilet In order to obtain a water-saving effect by reducing the amount of cleaning water (so-called “chase water”) supplied from the water supply pipe of the device to the cleaning water tank, a float is provided in the small tank of the cleaning water supply device. It has been known that the timing of supplying water from the water supply pipe of the cleaning water supply device to the cleaning water tank of the toilet is delayed by moving up and down with the water level inside.
In such a conventional cleaning water supply device described in Patent Document 1, both the small tank and the float are screwed onto a common shaft member extending in the vertical direction in order to facilitate construction and assembly of the device. Then, by rotating the shaft member around its central axis, the small tank and the float are interlocked in the vertical direction, and the height positions of the small tank and the float can be adjusted simultaneously.

US Pat. No. 6,666,228

  However, in the conventional cleaning water supply apparatus described above, the shaft member that adjusts the height position of the small tank and the float slides vertically with respect to the small tank together with the float as the water level of the cleaning water tank of the toilet bowl fluctuates. There is a sliding part that moves, but when the cleaning water supply device switches from water discharge to water stop, the sliding part is immersed in water in the small tank at the time of water discharge. When the water level rises above the water level and is exposed to the air, water marks and scales adhere to the sliding part. As a result, there is a problem that the float moves up and down, which causes water supply failure and water stoppage failure.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and can prevent malfunctions of the float due to water scale and adhesion of scales, thereby preventing water supply failures and water stop failures. An object of the present invention is to provide a cleaning water supply device and a cleaning water tank having the same.

In order to achieve the above object, the present invention is a washing water supply device for supplying washing water to a flush water tank of a toilet, and is supplied from an external water supply source and from this water supply pipe A water supply unit having a water supply valve for switching between water discharge and stop water in the cleaning water tank, a small tank attached to the water supply unit, and a cleaning water provided in the small tank. A float having a sliding portion that slides up and down with respect to the small tank as the water level fluctuates, and one end is attached to the water supply valve and the other end is attached to the float. And an arm that switches water discharge and water stop of the water supply valve by moving up and down together, and the sliding portion of the float is located below the water stop water level of the wash water in the wash water tank It is composed It is characterized in that characterized.
In the present invention configured as described above, since the sliding portion of the float is configured to be positioned below the stop water level of the cleaning water in the cleaning water tank, the cleaning water in the cleaning water tank is When the water stops, the sliding portion of the float with respect to the small tank can be submerged, and the sliding portion can be prevented from being exposed to air and adhering to scale and scale. As a result, it is possible to prevent problems with the vertical movement of the float with respect to the small tank, and to prevent water supply failure and water stop failure.

In the present invention, preferably, the small tank includes a small tank body, and a small tank position adjusting member that is attached to the water supply unit and supports the small tank body so that the position of the small tank body can be adjusted in the vertical direction. Is a float main body slidably mounted in the small tank main body, and a float position adjusting member attached to the arm and the float main body so that the relative position between the arm and the float main body can be adjusted. The float position adjusting member is attached to the small tank position adjusting member so that its lower end is slidable vertically along the same axis as the small tank position adjusting member. It is comprised so that a part may be formed.
In the present invention configured as described above, the bottom end of the float position adjusting member is slidably attached to the small tank position adjusting member so as to be slidable in the vertical direction along the same axis as the small tank position adjusting member. Since the moving part is formed, it is possible to prevent water scale and scale from adhering to the sliding parts of the small tank position adjusting member and the float position adjusting member. As a result, it is possible to prevent problems with the vertical movement of the float with respect to the small tank, and to prevent water supply failure and water stop failure.

In addition, the present invention is a washing water tank that supplies washing water to a toilet, and has the washing water supply device.
In this invention comprised in this way, the malfunction of the up-and-down movement of the float with respect to a small tank can be prevented, and the washing water tank which can prevent the water supply defect and the water stop defect can be provided.

  According to the cleaning water supply device of the present invention and the cleaning water tank having the same, it is possible to prevent the malfunction of the float due to the adhesion of scale or scale, and to prevent the water supply failure and the water stop failure.

It is sectional drawing of the flush toilet to which the washing water supply apparatus by one Embodiment of this invention is applied. It is front sectional drawing which shows the internal structure of the low tank containing the washing water supply apparatus by one Embodiment of this invention. It is an expansion perspective view showing the washing water supply device by one embodiment of the present invention. It is a longitudinal cross-sectional view which shows the washing water supply apparatus by one Embodiment of this invention. (A)-(c) is a partial front sectional view which respectively shows the water stop state, the water discharge start state, and the water discharge state of the washing water supply apparatus by one Embodiment of this invention. (A)-(c) is a fragmentary front sectional view which respectively shows the water stop state, the water discharge start state, and the water discharge state of the washing water supply apparatus by other embodiment of this invention.

Hereinafter, a cleaning water supply apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, an example of a toilet bowl to which a cleaning water supply device according to an embodiment of the present invention is applied will be described with reference to FIG.
FIG. 1 is a cross-sectional view of a flush toilet to which the flush water supply apparatus according to the present embodiment is applied.
As shown in FIG. 1, reference numeral 1 denotes a flush toilet. A bowl portion 2 is formed on the front side of the upper part of the flush toilet 1, a water guide channel 4 is formed on the rear side, and a lower side of the water guide channel 4. Are formed with drain trap lines 6 communicating with the bowl portion 2.

An overhang-shaped rim 8 is formed on the upper edge of the bowl portion 2 of the flush toilet 1, and one or two rim spouts 10 through which flush water is supplied from the water conduit 4 are formed on the rim 8. The washing water descends while swirling so that the bowl part 2 can be washed.
Further, a jet spout 12 to which wash water is supplied from the water conduit 4 is formed at the center lower portion of the bowl portion 2, and the wash water is spouted from the jet spout 12 toward the drain trap pipe 6, and the siphon Is generated in a short time.

  Above the water conduit 4 of the flush toilet 1, a low tank 14, which is a wash water tank that stores wash water supplied to the flush toilet 1, is provided. A communication port 14 b that communicates with the water conduit 4 of the flush toilet 1 is formed at the bottom 14 a of the low tank 14. In the low tank 14, various devices including a cleaning water supply device 20 according to an embodiment of the present invention, which will be described in detail later, are provided.

Next, referring to FIG. 2, various devices including the cleaning water supply device 20 according to the present embodiment provided in the low tank 14 will be described.
FIG. 2 is a front sectional view showing the internal structure of the low tank including the cleaning water supply apparatus according to the present embodiment.
As shown in FIG. 2, a drain valve 16, an overflow pipe 18, and a cleaning water supply device 20 are provided in the raw tank 14.

Specifically, the drain valve 16 includes a valve body 16a for large washing and a valve body 16b for small washing, and both the valve bodies 16a and 16b are provided in the communication port 14b portion of the bottom 14a of the low tank 14. ing.
The valve bodies 16a and 16b are connected to the ball chains 16e and 16f connected to the operation lever 17 via the respective drain valve floats 16c and 16d. By switching between the large cleaning mode and the small cleaning mode, the large cleaning valve body 16a or the small cleaning valve body 16b is opened and closed.

  Furthermore, the drain valve 16 stores the wash water in the low tank 14 by the closing operation, and the wash water in the low tank 14 through the water conduit 4 of the flush toilet 1 by the opening operation, It leads to the water inlet 12.

  The overflow pipe 18 is provided so that an opening 18 a is formed at the upper end thereof and the lower end thereof communicates with the valve seat 16 g of the drain valve 16. Even if the water level of the washing water rises by this overflow pipe 18, the washing water overflows from the opening 18a, and further passes through the valve seat 16g of the drain valve 16 and further passes through the water conduit 4 of the flush toilet 1. After that, the rim water spouting port 10 and the jet water spouting port 12 are discharged into the bowl portion 2.

Next, with reference to FIG. 2 to FIG. 4 and FIG. 5A, details of the cleaning water supply device 20 according to an embodiment of the present invention will be described.
FIG. 3 is a developed perspective view showing the cleaning water supply device according to the present embodiment, FIG. 4 is a longitudinal sectional view showing the cleaning water supply device according to the present embodiment, and FIG. 5A is the cleaning water according to the present embodiment. It is a fragmentary front sectional view which shows the water stop state of a supply apparatus.
2 and 5 (a) show the water tank and the cleaning water supply device in the water stop state, and the water level in the low tank and the water level in the small tank of the cleaning water supply device at the time of water stop are denoted by reference numerals. This is indicated by W0.

  First, as shown in FIG. 2 to FIG. 4 and FIG. 5A, the cleaning water supply device 20 of this embodiment includes a water supply pipe 22, a water supply valve 24, a float 26, a small tank 28, and a lever arm. 30.

The water supply pipe 22 is attached to the bottom portion 14 a of the low tank 14, is connected to a water supply source (not shown) such as an external water supply, and supplies cleaning water into the low tank 14.
The water supply pipe 22 has a water supply path 22a formed at the center thereof, and a diaphragm type water supply valve 24 is provided at the downstream end of the water supply path 22a (the upper end of the water supply path 22a in FIG. 4). .

The water supply valve 24 is provided with a valve housing 24a, a diaphragm 24c which is provided in the valve housing 24a so as to be movable in the vertical direction, and opens and closes the seat surface 24b. The water supply valve 24 is attached to the diaphragm 24c and moves inside the valve housing 24a together with the diaphragm 24c. A valve body 24d that is integrally movable in the vertical direction is provided.
In addition, a bleed hole (not shown) is formed in the diaphragm 24c, and the bleed hole (not shown) communicates the water supply path 22a of the water supply pipe 22 with the back pressure chamber 24e above the diaphragm 24c. ing. A back pressure relief hole 24f is formed in the upper portion of the back pressure chamber 24e.

Further, a water discharge pipe 32 that communicates with the water supply path 22a of the water supply pipe 22 via the diaphragm 24c is provided obliquely below the valve housing 24a of the water supply valve 24 on the float 26 side.
When the diaphragm 24c of the water supply valve 24 is opened, the water discharge pipe 32 discharges a part of the washing water in the water supply path 22a of the water supply pipe 22 substantially equal to the water pressure of the water supply source (not shown) toward the low tank 14. It functions as a water discharger.

Further, a lever arm 30 is attached to the upper surface of the valve housing 24 a of the water supply valve 24.
The lever arm 30 is cranked from the water supply valve side end 30a (the left end of the lever arm 30 in FIGS. 2 to 4) to the float side end 30b (the right end of the lever arm 30 in FIGS. 2 to 4). The water supply valve side end 30a is rotatably attached to the upper surface of the valve housing 24a of the water supply valve 24.

On the other hand, the float side end portion 30b of the lever arm 30 is the upper end of a float position adjusting member 26b (details will be described later) for adjusting the relative position in the vertical direction between the float body 26a of the float 26 and the lever arm 30 described in detail later. So that it can be detachably attached to any one of predetermined attachment grooves 26c, 26d, 26e (attachment positions P1, P2, P3) formed in a plurality of stages (three stages) vertically It has become.
Further, the float side end 30b of the lever arm 30 is formed in a U shape or a C shape as viewed from above, and the float side end 30b of the lever arm 30 and predetermined mounting grooves 26c of the float position adjusting member 26b, A predetermined play space 34 is formed at the connecting portion with 26d and 26e (see FIG. 5A).

  Further, a top seal 30c for opening and closing the back pressure relief hole 24f is attached to the end 30a of the lever arm 30 on the water supply valve side (see FIG. 4). The lever arm 30 has a float side end 30b that is floated. By moving up and down together with 26, the left end 30a of the lever arm 30 can swing about the fulcrum 30d (see FIG. 3) so that the water supply valve 24 can be switched between water discharge and water stop. It has become.

  In addition, the water supply valve 24 includes a hand-washing water supply pipe 36 that is branched from the water supply pipe 22 separately from the water discharge pipe 32 (see FIG. 2). The hand-washing water supply pipe 36 is detachably fixed on the row tank 14 and connected to a hand-washing currant 14e provided on a lid 14d that forms a hand-washing bowl 14c on the upper surface thereof. A part of the washing water in the water supply path 22a of the water supply pipe 22 passes through the hand wash water supply pipe 36 and is discharged into the hand wash basin 14c from the spout 14f of the hand wash currant 14e, and into the low tank 14 from the drain outlet 14g of the hand wash basin 14c. It is supposed to be drained.

Next, details of the float 26 and the small tank 28 will be described with reference to FIGS. 3, 4, and 5 (a).
As shown in FIGS. 3, 4, and 5A, the float 26 includes a float body 26a and a float position adjusting member 26b, and the small tank 28 includes a small tank body 28a and a small tank position adjusting member 28b. It has.

  First, a column member 38 is fixed to a part of the water supply portion constituting the water supply pipe 22 and the water supply valve 24 so as to extend in the vertical direction, and a sleeve having a male screw 28c is provided at the lower end portion of the column member 38. A small tank position adjusting member 28b is attached so as to be rotatable about its central axis.

Next, the small tank main body 28 a is a bowl-shaped member that opens upward and accommodates the float main body 26 a so as to be slidable in the vertical direction, and is slidably attached along the column member 38.
In addition, a projecting hole 28d that protrudes upward toward the upper end of the small tank main body 28a is formed at a substantially central portion of the bottom of the small tank main body 28a, and a female screw 28e is formed in the projecting hole 28d of the small tank main body 28a. The small tank position adjusting member 28b is screwed. Then, when the small tank position adjusting member 28b is rotated around its central axis A1, the small tank body 28a slides in the vertical direction along the column member 38 according to the rotation direction, and the small tank body 28a The direction position can be changed.
In the present embodiment, a mode in which the small tank main body 28a is slidably attached along the column member 38 will be described as an example. However, the present invention is not limited to such a mode, and the small tank main body 28a is supplied with water. The form attached to the water supply pipe | tube 22 so that sliding in the up-down direction along the pipe | tube 22 may be sufficient.

Next, the float body 26a is provided with a buoyancy generator 26f that is open only at its lower end and generates buoyancy.
Further, the float body 26a has a central portion 26g extending in a substantially cylindrical shape from the inside of the float body 26a toward the upper outside.
More specifically, in a state where the float main body 26a is accommodated in the small tank main body 28a, a portion corresponding to the buoyancy generating portion 26f inside the float main body 26a in the central portion 26g of the float main body 26a is the small tank main body 28a. It is formed in a substantially cylindrical shape in the vertical direction so as to surround the periphery of the protruding hole 28d at a predetermined interval, and extends upwardly from the upper edge portion 26h of the buoyancy generating portion 26f and is formed in a substantially cylindrical shape. .

Further, the float position adjusting member 26b is a rod-like member extending in the vertical direction, and predetermined mounting grooves 26c, 26d, and 26e formed in a plurality of stages (three stages) in the vertical direction formed on the upper end portion thereof. The float side end 30b of the lever arm 30 is detachably attached to any of the above.
The mounting positions P1, P2, and P3 where the float side end 30b of the lever arm 30 is mounted in any of the mounting grooves 26c, 26d, and 26e of the float position adjusting member 26b are different from the specifications of flush toilets with different amounts of flushing water. By switching according to the usage situation, the timing for starting water discharge from the water discharge pipe 32 into the low tank 14 or the timing for starting water discharge from the water discharge port 14f of the hand-washing currant 14e into the hand-washing bowl 14c can be advanced or delayed. Can be done.
Incidentally, in the cleaning water supply device 20 of the present embodiment shown in FIGS. 2, 4, and 5A, the float side end 30b of the lever arm 30 is attached to the uppermost mounting groove of the float position adjusting member 26b. Although the example attached to 26c (attachment position P1) is demonstrated, the timing which starts spouting can be advanced, so that it attaches to the attachment position of the lower stage rather than the attachment position P1.
Further, in the cleaning water supply device 20 of the present embodiment, a mode in which the float position adjusting member 26b is provided with three stages of mounting grooves 26c, 26d, and 26e will be described, but the mounting grooves are set in two stages. Alternatively, it may be set in multiple stages of four or more stages.

  Next, the float position adjusting member 26b is formed with a male screw 26i at an intermediate portion thereof, and is screwed with a female screw 26j formed at the inner periphery of the upper end of the central portion 26g of the float main body 26a. When the float position adjusting member 26b is rotated about its central axis A2, the float body 26a slides in the vertical direction along the float position adjusting member 26b according to the rotation direction, and the float body 26a and the lever arm The relative position in the vertical direction with respect to 30 float side end portions 30b can be changed.

Further, the lower end portion of the float position adjusting member 26b is inserted into a through hole 28f extending vertically through the center portion of the small tank position adjusting member 28b, and is on the same axis as the central axis A1 of the small tank position adjusting member 28b. A sliding portion 26k is formed that can slide in the through hole 28f in the vertical direction.
In addition, a protrusion 28g that protrudes inward and holds the sliding portion 26k of the float position adjusting member 26b so as to be slidable in the vertical direction is formed on the inner peripheral portion of the upper end of the through hole 28f of the small tank position adjusting member 28b. Has been.
Here, as shown in FIG. 5 (a), in the flush water supply device 20 in the still water state, the projection 28g of the through hole 28f of the small tank position adjusting member 28b and the inside of the through hole 28f slide. The sliding portion 26k of the float position adjusting member 26b is positioned below the water stop water level W0 of the low tank 14.

More specifically, since the protrusion 28g of the through hole 28f of the small tank position adjusting member 28b holds the sliding portion 26k of the float position adjusting member 26b so as to be slidable in the vertical direction, the small tank position adjusting member 28b. When the float position adjusting member 26b is rotated around the center axis A2 of the float position adjusting member 26b on the same axis as the center axis A1, the rotational force is transmitted through the sliding portion 26k of the float position adjusting member 26b. The small tank position adjusting member 28b rotates around its central axis A1 and the small tank main body 28a follows the column member 38 in accordance with the direction of rotation of the small tank position adjusting member 28b. Thus, the vertical position of the small tank main body 28a can be changed.
That is, when the float position adjusting member 26b is rotated about its central axis A2, the float body 26a slides in the vertical direction along the float position adjusting member 26b according to the rotation direction, and the float body 26a and the lever arm The relative position in the vertical direction with respect to the float-side end 30b of 30 is changed, the small tank position adjusting member 28b rotates around its central axis A1, and the small tank main body 28a is a column member according to the rotation direction. The vertical position of the small tank main body 28a can be changed.

Further, a communication hole 28h that allows communication between the small tank main body 28a and the inside of the low tank 14 is formed in a part of the bottom surface of the small tank main body 28a, and a ball valve 28i that functions as a check valve is formed in the communication hole 28h. Is provided.
Since the ball valve 28i floats due to the buoyancy of the water level in the low tank 14, the communication hole 28h is closed when the water level of the low tank 14 exceeds the bottom surface of the small tank body 28a.
On the other hand, when the water level in the low tank 14 falls below the bottom surface of the small tank main body 28a, the ball valve 28i descends so as to open the communication hole 28h, and the washing water contained in the small tank main body 28a passes through the communication hole 28h. It flows out into the low tank 14.

  Further, as described above, the relative position in the vertical direction between the float main body 26a and the float side end 30b of the lever arm 30 is changed by rotating the float position adjusting member 26b around the central axis A2. Since the vertical position of the small tank main body 28a is changed, the vertical position of the ball valve 28i is changed accordingly, and the water stop water level in the low tank 14 can be changed. ing.

Next, the operation (action) of the cleaning water supply apparatus according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4 and FIGS.
Here, FIG.5 (b) and FIG.5 (c) are the partial front sectional drawings which show the water discharge start state of the washing water supply apparatus by this embodiment, and the water discharge state.
5 (b) and 5 (c), the same parts as those in FIG. 5 (a) are denoted by the same reference numerals, and description thereof will be omitted. Moreover, in FIG.5 (b), the water level in the small tank of a washing water supply apparatus is shown with the code | symbol W1.

First, when the water level in the low tank 14 exceeds the upper edge of the small tank main body 28a immediately before the cleaning water supply device 20 of the present embodiment enters the water stop state, the cleaning water in the low tank 14 floats with the small tank main body 28a. It flows into the small tank main body 28a from the gap with the main body 26a.
And the float main body 26a rises with respect to the small tank main body 28a by the buoyancy which the buoyancy generating part 26f received with the rise of the water level in the small tank main body 28a.

Next, as the float body 26a rises, the float position adjustment member 26b also rises together with the float body 26a, and the float side end 30b of the lever arm 30 connected to the mounting groove 26c of the float position adjustment member 26b To rise.
Here, when the float position adjusting member 26b rises, the sliding portion 26k of the float position adjusting member 26b slides upward in the through hole 28f of the small tank position adjusting member 28b.
Further, the lever arm 30 swings around a fulcrum 30d (see FIG. 3) of the left end 30a of the lever arm 30 so as to close the diaphragm 24c of the water supply valve 24. After that, when the water level in the small tank main body 28a reaches the highest water level that is almost full, the float main body 26a has floated to the highest position, and the diaphragm 24c of the water supply valve 24 is completely closed and cleaned. The water supply device 20 enters a water stop state, and the water level of the low tank 14 becomes W0.

  Further, in the flush water supply device 20 in the water stop state, the through hole 28f of the small tank position adjusting member 28b and the sliding portion 26k of the float position adjusting member 26b sliding in the through hole 28f are provided in the low tank 14. It is located below the still water level W0.

Next, when the toilet user operates the operation lever 17 after using the flush toilet 1, for example, in the case of large washing, both the valve bodies 16 a and 16 b of the drain valve 16 are opened and water is stored in the low tank 14. The flushed toilet 1 is washed into the flush toilet 1 to wash the flush toilet 1.
At this time, the water level in the low tank 14 decreases from the water stop water level W0 because the washing water is drained to the flush toilet 1, and when the water level in the low tank 14 falls below the bottom surface of the small tank body 28a, the ball valve 28i It descends so as to open the communication hole 28h, and the washing water accommodated in the small tank body 28a flows into the low tank 14 from the communication hole 28h.

After that, as shown in FIG. 5B, when the water level in the small tank body 28a further decreases and reaches the water level W1, the float body 26a reduces the water level in the small tank body 28a and the buoyancy generator 26f. It descends as buoyancy decreases.
At this time, the float side end 30b of the lever arm 30 is also lowered, and the sliding portion 26k of the float position adjusting member 26b slides downward in the through hole 28f of the small tank position adjusting member 28b.
Further, the lever arm 30 swings around the fulcrum 30d (see FIG. 3) of the left end 30a of the lever arm 30 so as to open the diaphragm 24c of the water supply valve 24, and the diaphragm 24c of the water supply valve 24 opens. When the valve is turned on, water discharge from the water discharge pipe 32 into the low tank 14 is started, and water discharge from the water supply pipe 22 through the hand wash water supply pipe 36 to the hand wash bowl 14c from the water discharge port 14f of the hand wash currant 14e is started. .
Further, the water discharged from the water outlet 14f of the hand-washing currant 14e into the hand-washing bowl 14c is drained into the raw tank 14 from the drain outlet 14g of the hand-washing bowl 14c.

Thereafter, as shown in FIG. 5 (c), water is discharged from the water discharge pipe 32 into the raw tank 14 and drained into the raw tank 14 from the drain port 14g of the hand-washing basin 14c. The amount of discharged water exceeding the amount of discharged water and the amount of discharged water is drained from the low tank 14 to the flush toilet 1, and so-called chasing water is supplied into the low tank 14.
In addition, the water level in the small tank main body 28a further decreases from W1, reaches a substantially empty state, and the float main body 26a descends to the lowest position.
Finally, the drain valve 16 is closed when the water level in the low tank 14 reaches the predetermined water level W2 (see FIG. 2). From the state of the predetermined water level W2 in the low tank 14, the water tank 32 is connected to the low tank. The water level in the row tank 14 gradually rises again due to the water discharged into the chamber 14 and the drainage into the row tank 14 from the drain port 14g of the hand-washing bowl 14c.

Thereafter, when the water level in the low tank 14 rises over the upper edge of the small tank main body 28a to the water stop water level W0, the float main body 26a rises as described above, the diaphragm 24c of the water supply valve 24 closes, and the low tank The supply of cleaning water into 14 is stopped.
At this time, the through hole 28f of the small tank position adjusting member 28b and the sliding portion 26k of the float position adjusting member 26b sliding in the through hole 28f are positioned below the water stop water level W0 of the low tank 14. It is in the state.

  According to the cleaning water supply device 20 according to the above-described embodiment of the present invention, the protrusion 28g of the through hole 28f of the small tank position adjusting member 28b and the float sliding in the through hole 28f in the water stop state. Since the sliding portion 26k of the position adjusting member 26b is positioned below the water stop water level W0 of the washing water in the low tank 14, the protrusion 28g of the through hole 28f of the small tank position adjusting member 28b or the float position It is possible to prevent water scale and scale from adhering to the sliding portion 26k of the adjustment member 26b. As a result, it is possible to prevent the vertical movement of the float 26 with respect to the small tank 28 and prevent water supply failure and water stop failure.

  Further, according to the cleaning water supply device 20 according to the present embodiment, the lower end portion of the float position adjusting member 26b is inserted into the through hole 28f extending vertically through the center portion of the small tank position adjusting member 28b. The small tank position adjusting member 28b and the float position adjusting member are formed because the sliding portion 26k that can slide in the vertical direction in the through hole 28f is formed along the same axis as the central axis A1 of the position adjusting member 28b. It is possible to prevent scales and scales from adhering to the sliding portion 26k of 26b, to prevent the vertical movement of the float with respect to the small tank, and to prevent water supply failure and water stop failure.

Next, a cleaning water supply device according to another embodiment of the present invention will be described with reference to FIGS.
FIG. 6A to FIG. 6C are partial front cross-sectional views respectively showing a water stop state, a water discharge start state, and a water discharge state of a cleaning water supply device according to another embodiment of the present invention.
6 (a) to 6 (c), the same reference numerals as those shown in FIGS. 5 (a) to 5 (c) are given, and the description thereof is omitted.

  As shown in FIGS. 6A to 6C, in the cleaning water supply device of the present embodiment, the float side end 30b of the lever arm 30 is connected to the lowermost mounting groove 26e ( By attaching to the attachment position P3), the position of the float body 26a with respect to the small tank body 28a is positioned higher than those attached to the attachment position P1 and the attachment position P2.

  In the present embodiment, since the float body 26a is positioned further upward with respect to the tank body 28a, the water level W1 in the small tank body 28a where the float body 26a starts to descend is also set upward. The timing for starting water discharge from the water pipe 32 into the low tank 14 and the timing for starting water discharge from the water outlet 14f of the hand-washing currant 14e into the hand-washing bowl 14c can be advanced.

  Further, in the present embodiment, although the position of the float body 26a with respect to the tank body 28a is positioned higher, the protrusion 28g of the through hole 28f of the small tank position adjusting member 28b and the inside of the through hole 28f The sliding portion 26k of the float position adjusting member 26b that slides in the lower tank 14 is positioned below the water stop water level W0 in the low tank 14.

  According to the washing water supply device according to the other embodiment of the present invention described above, the timing for starting water discharge from the water discharge pipe 32 into the raw tank 14 and the water discharge from the water discharge port 14f of the hand washing currant 14e into the hand washing bowl 14c are started. By speeding up the timing, the time until the user starts hand-washing in the hand-washing bowl 14c can be shortened. Further, in the water stop state, the projection 28g of the through hole 28f of the small tank position adjusting member 28b and the sliding portion 26k of the float position adjusting member 26b sliding in the through hole 28f are used to wash the water in the low tank 14. Therefore, water scale and scale adhere to the projections 28g of the through holes 28f of the small tank position adjusting member 28b and the sliding portions 26k of the float position adjusting member 26b. It is possible to prevent the float 26 from moving up and down with respect to the small tank 28, and to prevent water supply failure and water stop failure.

  In the cleaning water supply apparatus according to the above-described embodiment of the present invention, as an example, an example in which the cleaning water tank is provided with a hand-washing bowl has been described. However, the cleaning water tank is limited to such a configuration. In addition, the present invention can be applied to other types of washing water tanks that do not include a hand-washing bowl.

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Bowl part 4 Water conduit 6 Drain trap pipe 8 Rim 10 Rim spout 12 Jet spout 14 Low tank 14a Low tank bottom 14b Communication port 14c Hand wash bowl 14d Lid 14e Hand wash currant 14f Hand wash currant spout 14g Hand wash bowl 16 Drainage valve 16 Drain valve 16 a Large wash valve 16 b Small wash valve 16 c, 16 d Drain float 16 e, 16 f Ball chain 16 g Valve seat 17 Operation lever 18 Overflow pipe 20 Washing water supply device 22 Water supply pipe 22a Water supply path 24 Water supply valve 24a Valve housing 24b Seat surface 24c Diaphragm 24d Valve body 24e Back pressure chamber 24f Back pressure release hole 26 Float 26a Float main body 26b Float position adjusting member 26c, 26d, 26e Mounting groove 26f Float of float main body Generating portion 26g Center portion of float main body 26h Upper edge portion of buoyancy generating portion of float main body 26i Male screw of float position adjusting member 26j Female screw of central portion of float main body 26k Sliding portion of float position adjusting member 28 Small tank 28a Small tank main body 28b Small tank position adjusting member 28c Small tank position adjusting member male screw 28d Small tank body projecting hole 28e Small tank body projecting hole female screw 28f Small tank position adjusting member through hole 28g Small tank position adjusting member through hole holding Protrusion 28h Small tank body communication hole 28i Ball valve 30 Lever arm 30a Lever arm water supply valve side end 30b Lever arm float side end 30c Top seal 30d Support point 32 Water discharge pipe 34 Play space 36 Hand wash water supply pipe 38 Column member

Claims (3)

A cleaning water supply device for supplying cleaning water to a toilet cleaning water tank,
A water supply unit having a water supply pipe connected to an external water supply source and a water supply valve for switching water discharge and stop water into the wash water tank supplied from the water supply pipe;
A small tank attached to this water supply,
A float provided in the small tank and provided with a sliding portion that slides in the vertical direction with respect to the small tank in accordance with a change in the level of the washing water in the small tank;
One end is attached to the water supply valve and the other end is attached to the float, and has an arm that switches water discharge and water stop of the water supply valve by moving up and down with the float.
The cleaning water supply apparatus according to claim 1, wherein the sliding portion of the float is configured to be positioned below a water stop water level in the cleaning water tank.   The small tank includes a small tank main body, and a small tank position adjusting member that is attached to the water supply unit and supports the small tank main body so that the position of the small tank main body can be adjusted in the vertical direction. The float is disposed in the small tank main body. And a float position adjusting member attached to the arm and the float body so that the relative position between the arm and the float body can be adjusted. The position adjustment member is configured such that the lower end portion thereof is attached to the small tank position adjustment member so as to be slidable in the vertical direction along the same axis as the small tank position adjustment member to form the sliding portion. The washing water supply apparatus according to claim 1, wherein A wash water tank for supplying wash water to the toilet,
A cleaning water tank comprising the cleaning water supply device according to claim 1.

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