JP5708935B2 - Makeup water supply device, wash water tank device provided with this make up water supply device, and flush toilet equipped with this wash water tank device - Google Patents

Description

  The present invention relates to a makeup water supply device, a washing water tank device provided with the makeup water supply device, and a flush toilet equipped with the washing water tank device, and in particular, a makeup water supply for supplying makeup water to the toilet. The present invention relates to an apparatus, a washing water tank apparatus provided with the makeup water supply apparatus, and a flush toilet equipped with the washing water tank apparatus.

Conventionally, in flush toilets that perform toilet flushing with two different washing water amounts, large and small, the replenishing water supply device that refills the toilet with replenishing water has different refill water amount (replenishing water amount) It is known that the amount of refill water of the difference spills down to the downstream of the drainage trap of the toilet and wastes the wash water unnecessarily.
As shown in Patent Document 1, in order to prevent such waste of wasted water, the tip opening of the refill pipe branched from the water supply device is moved along the overflow pipe by the water level in the wash water tank. Mounted on a float that moves up and down, moves up and down together with the float, starts supplying refill water from the top opening of the refill pipe into the overflow pipe when the water level reaches the specified level in the wash water tank, and starts from the top opening of the refill pipe when the full water level is reached. It is known that the supply of refill water is completed.

Japanese Patent Laid-Open No. 08-302781

  However, as in the makeup water supply apparatus shown in Patent Document 1 described above, the tip opening of the refill pipe integral with the float is moved by integrally moving the tip opening of the float and the refill pipe. It does not move up and down stably due to contact with the overflow pipe due to the water discharge pressure, and the refilling water discharged from the tip opening of the refill pipe cannot be stably flowed into the overflow pipe. There is a problem (defect) that the amount of makeup water to be supplied does not become constant due to excess or deficiency, and that a certain amount of makeup water cannot be refilled in the toilet bowl in large washing and small washing. With the recent demand for water saving, the amount of washing water has been reduced, and this problem has become more prominent.

  Accordingly, the present invention has been made to solve the drawbacks of the prior art, and provides a makeup water supply device capable of stably refilling a toilet with a certain amount of makeup water in large washing and small washing. The purpose is to do.

In order to achieve the above object, the present invention provides a water supply device for supplying cleaning water for cleaning a toilet from a water source into a cleaning water tank, and a drain flow disposed on the bottom surface of the cleaning water tank and communicating with the toilet. A drainage valve that opens and closes the channel and communicates with the drainage channel and is provided to extend upward from the bottom surface of the washing water tank. When the washing water in the washing water tank exceeds the full water level, the washing water is discharged to the toilet. A replenishing water supply device for supplying replenishing water to a toilet that performs large washing and small washing, and is formed at the downstream end of the water supply device. A replenishment water section that is fixed so that the discharged water outlet is directed to the opening of the overflow pipe and supplies cleaning water from the water discharge opening to the overflow pipe, and is disposed at the opening of the overflow pipe and overflows from the water discharge opening of the replenishment water section Opening / closing means for opening / closing the opening of the overflow pipe so as to block the flow of the washing water into the low pipe, and the drain valve opens the drain flow path and starts the large washing or the small washing. Opening / closing means that closes the drain pipe and closes the opening of the overflow pipe during a predetermined period until the water level in the washing water tank rises to a predetermined reference water level, and opens the opening of the overflow pipe during periods other than the predetermined period It is characterized by having.
In the present invention configured as described above, the drain valve is connected to the drain passage by the opening opening / closing means disposed in the opening of the overflow pipe in a state where the makeup water portion is fixed so as to be directed to the opening of the overflow pipe. The opening of the overflow pipe is closed for a predetermined period after the drainage valve opens and the drainage valve closes the drainage flow path and the water level in the cleaning water tank rises to the predetermined reference water level. The makeup water from the outlet of the makeup water section is prevented from flowing into the overflow pipe, and the makeup water is supplied into the washing water tank, and the opening of the overflow pipe is opened during a period other than the predetermined period. The makeup water from the water outlet of the makeup water section can be stably flowed into the overflow pipe. Therefore, in each case of large washing and small washing, a certain amount of makeup water can be stably refilled in the toilet bowl from the makeup water section.

In the present invention, preferably, the predetermined reference water level is a water level in which the water level in the wash water tank is lower than the full water level, and the opening / closing means is a float that moves up and down depending on the water level in the wash water tank, and the float is interlocked with the float. When the water level in the wash water tank is below the predetermined reference water level, the opening of the overflow pipe is closed and the water level in the wash water tank is equal to or equal to the predetermined reference water level. An opening / closing member that opens the opening of the overflow pipe when the water level is higher than the upper level.
In the present invention configured as described above, when the water level in the washing water tank is lower than a predetermined reference water level below the full water level, the opening / closing member closes the opening of the overflow pipe in conjunction with the float. The makeup water from the spout of the makeup water section is prevented from flowing into the overflow pipe, and the makeup water is supplied into the washing water tank, and the water level in the washing water tank is equal to or equal to the predetermined reference water level. When the water level is higher than the reference water level, the opening / closing member opens the opening of the overflow pipe in conjunction with the float, so that makeup water from the water outlet of the makeup water section can be stably flowed into the overflow pipe. . Therefore, in each of the large washing and the small washing, it is possible to stably refill the toilet with a certain amount of makeup water from the makeup water section with a simple structure.

In the present invention, preferably, the opening / closing means further includes a support shaft that is provided so as to extend substantially horizontally from the overflow pipe and supports the opening / closing member, and the opening / closing member overflows in conjunction with the vertical movement of the float. It is rotatably attached to the support shaft so as to open and close the opening of the tube.
In the present invention configured as described above, the opening of the overflow pipe can be opened and closed by rotating the opening / closing member of the opening opening / closing means about the support shaft in conjunction with the vertical movement of the float. Therefore, with a simple structure, it is possible to stably refill the toilet with a certain amount of makeup water in each case of large washing and small washing from the spout of the makeup water section. In addition, since the opening / closing member of the opening / closing means opens / closes the opening of the overflow pipe in the direction of rotation about the support shaft, it is more compact than the opening / closing (height) direction of the overflow pipe. Can be structured.

In the present invention, it is preferable that the opening / closing member has a predetermined interval between the opening and the opening / closing member so that the opening / closing member is opened over substantially the entire opening region of the overflow tube in a state where the opening of the overflow tube is opened. The gap is formed.
In the present invention configured as described above, the opening and closing member opens over the entire area of the opening of the overflow pipe with the opening of the overflow pipe open, and a predetermined interval is provided between the opening and the opening and closing member. Since the gap is formed, the wash water that exceeds the specified water level corresponding to the opening of the overflow pipe can be discharged from the gap to the overflow pipe, and the overflow ability can be secured by suppressing the decrease in the overflow capacity. it can. In addition, the opening / closing member opens the overflow pipe only for a predetermined period when the water level in the cleaning water tank is above the predetermined reference water level, and the water discharged from the water outlet of the makeup water section Since the water is allowed to flow into the overflow pipe, a fixed amount of make-up water from the make-up water section can be stably refilled in the toilet in each case of large washing and small washing.

In the present invention, preferably, the opening / closing member has a substantially spherical surface on the side facing the water discharge port of the makeup water portion in a state where the opening of the overflow pipe is closed, Water is discharged toward the top of the substantially spherical surface of the opening / closing member in a state where the opening / closing member closes the opening of the overflow pipe.
In the present invention configured as described above, when the opening and closing member closes the opening of the overflow pipe, the makeup water discharged from the outlet of the makeup water portion is discharged toward the top of the substantially spherical surface of the opening and closing member. Therefore, the cleaning water discharged from the top is uniformly diffused into the cleaning water tank along the substantially spherical surface. Therefore, it is possible to reduce water splashing by reducing the splash of the makeup water discharged from the makeup water section to the opening / closing member.

In the present invention, preferably, the float is provided with an adjusting means capable of adjusting in a vertical direction a position where a buoyancy that raises the float according to a water level in the washing water tank and a weight of the float is balanced.
In the present invention configured as described above, the position of the buoyancy that raises the float by the water level in the washing water tank and the weight of the float can be adjusted in the vertical direction by the adjusting means. The timing for opening and closing the opening can be adjusted. Therefore, the amount of makeup water supplied to the toilet bowl can be changed according to the capacity of the flush water tank used for toilet flushing, and a fixed amount of makeup water can be stabilized from the makeup water section in each case of large washing and small washing. And refill the toilet bowl.

Moreover, this invention is a washing water tank apparatus provided with the makeup water supply apparatus.
In the present invention configured as described above, it is possible to provide a washing water tank apparatus capable of stably refilling a toilet with a fixed amount of makeup water in each case of large washing and small washing.

Moreover, this invention is the flush toilet provided with the washing water tank apparatus.
In the present invention configured as described above, it is possible to provide a flush toilet capable of stably refilling a toilet with a fixed amount of makeup water in each case of large washing and small washing.

  According to the makeup water supply device of the present invention, a fixed amount of makeup water can be stably refilled in the toilet bowl in large washing and small washing.

It is a perspective view which shows the state which removed the toilet seat and the toilet lid in the flush toilet to which the flush water tank apparatus provided with the makeup water supply apparatus by 1st Embodiment of this invention was applied. FIG. 2 is a partial cross-sectional front view in which the internal structure of the cleaning water tank apparatus including the makeup water supply apparatus according to the first embodiment of the present invention is partially cut away with the lid removed. It is a top view which shows the internal structure of the washing water tank apparatus provided with the makeup water supply apparatus by 1st Embodiment of this invention in the state which removed the cover body. It is a perspective view which shows the opening opening-closing means of the state located above the overflow pipe | tube of the makeup water supply apparatus by 1st Embodiment of this invention. In the washing water tank apparatus which shows the state before drainage and water supply in the large washing mode of the makeup water supply apparatus by a 1st embodiment of the present invention are started, it is the fragmentary front sectional view which partially fractured the makeup water supply apparatus is there. FIG. 3 is a partial front cross-sectional view in which the makeup water supply device is partially broken in the washing water tank device showing a state immediately after the end of drainage in the large cleaning mode of the makeup water supply device according to the first embodiment of the present invention. In the cleaning water tank apparatus showing a state where the water level in the cleaning water tank rises to the reference water level WL2 with time after the drainage in the large cleaning mode of the makeup water supply apparatus according to the first embodiment of the present invention, It is the partial front sectional view which fractured | ruptured the makeup water supply apparatus partially. After the end of drainage in the large cleaning mode of the makeup water supply device according to the first embodiment of the present invention, the state immediately before the water level in the cleaning water tank rises to the water level WL3 close to the water stop water level with time and the water supply ends. In the washing water tank apparatus shown, it is a partial front sectional view in which a makeup water supply apparatus is partially broken. In the washing water tank apparatus which shows the state before drainage and water supply in the small washing mode of the makeup water supply apparatus by a 1st embodiment of the present invention are started, it is the fragmentary front sectional view which fractured partially the makeup water supply apparatus is there. FIG. 3 is a partial front cross-sectional view in which the makeup water supply device is partially broken in the washing water tank device showing a state immediately after the end of drainage in the small cleaning mode of the makeup water supply device according to the first embodiment of the present invention. In the cleaning water tank apparatus showing a state in which the water level in the cleaning water tank rises to the reference water level WL2 with time after the drainage in the small cleaning mode of the makeup water supply apparatus according to the first embodiment of the present invention, It is the partial front sectional view which fractured | ruptured the makeup water supply apparatus partially. After the end of drainage in the small cleaning mode of the makeup water supply apparatus according to the first embodiment of the present invention, the state immediately before the water level in the cleaning water tank is raised to the water level WL3 close to the water stop level with time and the water supply ends. In the washing water tank apparatus shown, it is a partial front sectional view in which a makeup water supply apparatus is partially broken. It is the fragmentary sectional front view which partly fractured | ruptured the internal structure of the washing water tank apparatus provided with the makeup water supply apparatus by 2nd Embodiment of this invention in the state which removed the cover body. It is a top view which shows the internal structure of the washing water tank apparatus provided with the makeup water supply apparatus by 2nd Embodiment of this invention in the state which removed the cover body. It is a perspective view of a part of replenishment water apparatus of the replenishment water supply apparatus by 2nd Embodiment of this invention, and an opening opening-closing means. It is a disassembled perspective view of a part of replenishment water apparatus of the replenishment water supply apparatus by 2nd Embodiment of this invention, and an opening opening-closing means. In the washing water tank apparatus which shows the state before drainage and water supply in the large washing mode of the makeup water supply apparatus by 2nd Embodiment of this invention are started, it is the partial front sectional view which fractured | ruptured the makeup water supply apparatus partially is there. FIG. 6 is a partial front cross-sectional view in which a makeup water supply device is partially broken in a washing water tank device showing a state immediately after the end of drainage in a large cleaning mode of a makeup water supply device according to a second embodiment of the present invention. In the cleaning water tank apparatus showing a state in which the water level in the cleaning water tank rises to the reference water level WL2 with time after the drainage in the large cleaning mode of the makeup water supply apparatus according to the second embodiment of the present invention, It is the partial front sectional view which fractured | ruptured the makeup water supply apparatus partially. After the end of drainage in the large cleaning mode of the makeup water supply device according to the second embodiment of the present invention, the state immediately before the water level in the cleaning water tank 18 is raised to the water level WL3 close to the water stop level with time and the water supply ends. FIG. 5 is a partial front cross-sectional view in which the makeup water supply device is partially broken in the cleaning water tank apparatus showing In the washing water tank apparatus which shows the state before drainage and water supply in the small washing mode of the makeup water supply apparatus by 2nd Embodiment of this invention are started, it is the partial front sectional view which fractured | ruptured the makeup water supply apparatus partially is there. FIG. 6 is a partial front cross-sectional view in which a makeup water supply device is partially broken in a washing water tank device showing a state immediately after the end of drainage in a small cleaning mode of a makeup water supply device according to a second embodiment of the present invention. In the cleaning water tank apparatus showing a state in which the water level in the cleaning water tank 18 rises to the reference water level WL2 with time after the drainage in the small cleaning mode of the makeup water supply apparatus according to the second embodiment of the present invention. It is the partial front sectional view which fractured | ruptured the makeup water supply apparatus partially. After the end of drainage in the small cleaning mode of the makeup water supply apparatus according to the second embodiment of the present invention, the state immediately before the water level in the cleaning water tank 18 is raised to the water level WL3 close to the water stop water level with time and water supply ends. FIG. 5 is a partial front cross-sectional view in which the makeup water supply device is partially broken in the cleaning water tank apparatus showing

Next, with reference to the accompanying drawings, a makeup water supply device according to a first embodiment of the present invention, a washing water tank device including the makeup water supply device, and a flush toilet to which the washing water tank device is applied will be described. .
First, referring to FIG. 1, a flush toilet to which a flush water tank apparatus including a makeup water supply apparatus according to a first embodiment of the present invention is applied will be described.
FIG. 1 is a perspective view illustrating a state where a toilet seat and a toilet lid are removed in a flush toilet to which a flush water tank apparatus including a makeup water supply apparatus according to a first embodiment of the present invention is applied.

As shown in FIG. 1, reference numeral 1 is a so-called siphon type flush toilet that sucks filth in the bowl portion using a siphon action and discharges it from the drain trap pipe to the outside at once. This flush toilet 1 includes a toilet bowl body 2 made of earthenware. A bowl section 4 and a drain trap pipe 6 communicating with a lower portion of the bowl section 4 are formed in the toilet bowl body 2.
On the upper edge of the bowl portion 4 of the toilet body 2, a wash water supplied from a rim 8 overhanging on the inside and a drainage channel 9 (see FIG. 2) formed inside the toilet body 2 on the rear side. The first water outlet 10 for discharging water is formed, and the wash water discharged from the first water outlet 10 descends while swirling to wash the bowl portion 4.

Below the bowl portion 4, a water storage portion 12 whose water storage surface is indicated by a chain line W ₀ is formed. An inlet 6a of a drain trap pipe 6 is opened below the water reservoir 12, and a drain trap pipe 6 behind the inlet 6a is connected to a drain pipe (not shown) through a drain socket (not shown). (Not shown).
In addition, a second water outlet that discharges wash water supplied from a drainage channel 9 (see FIG. 2) formed inside the toilet body 2 at the rear side of the toilet body 2 is located above the pool surface W ₀ of the bowl portion 4. 14 is formed, and the wash water discharged from the second water discharge port 14 generates a swirl flow that swirls the accumulated water in the accumulated water portion 12 in the vertical direction.

A flush water tank device 16 for storing flush water to be supplied to the toilet body 2 is provided on the upper surface on the rear side of the toilet body 2, and a lid that covers the flush water tank device is provided above the flush water tank device 16. A body 17 is provided.
In the washing water tank device 16 according to the present embodiment, an example applied to the siphon type flush toilet described above will be described. However, the present invention is not limited to such a siphon type flush toilet, and the water in the bowl portion is not limited. The present invention can also be applied to other types of flush toilets such as a so-called flush toilet that flushes filth by flowing water due to a drop.

Next, the internal structure of the washing water tank device 16 will be described with reference to FIGS.
FIG. 2 is a partial cross-sectional front view in which the internal structure of the cleaning water tank apparatus including the makeup water supply apparatus according to the first embodiment of the present invention is partially cut away with the lid removed. FIG. 3 is a top view showing the internal structure of the washing water tank apparatus including the makeup water supply apparatus according to the first embodiment of the present invention with the lid removed.
As shown in FIGS. 2 and 3, the washing water tank device 16 includes a washing water tank 18 for storing washing water for washing the flush toilet 1, and the bottom of the washing water tank 18 has a toilet body 2. A drain port 20 that communicates with the drain channel 9 is formed, and the cleaning water in the cleaning water tank 18 is supplied to the drain channel 9 of the toilet body 2. The washing water tank 18 can use a washing water amount of 4.8 liters for washing at the time of large washing so as to be used for a water-saving flush toilet. The amount of water may be different.

As shown in FIGS. 2 and 3, in the cleaning water tank 18 of the cleaning water tank device 16, a makeup water supply device 19, a water supply device 22 for supplying the cleaning water into the cleaning water tank 18, and the cleaning water A drain valve device 24 that opens the drain port 20 for the wash water stored in the tank 18 to flow into the drain passage 9 of the toilet body 2 and the wash water in the wash water tank 18 attached to the drain valve device 24 are defined. An overflow pipe portion 26 is provided for allowing the flush water to overflow into the toilet body 2 via the drainage channel 9 when the water level is exceeded.
Further, a replenishment water supply device 19, which will be described in detail later, is branched from the water supply device 22, extends to above the overflow pipe portion 26, and refills the toilet body 2 with replenishment water, and further includes an overflow pipe portion 26. Above the opening, an overflow pipe is provided so that the makeup water discharged from the makeup water section 28 is blocked from flowing into the overflow pipe section 26 during periods other than a period during which a fixed amount of makeup water is refilled into the toilet. And an opening / closing device 30 that opens the opening of the overflow pipe part 26 so as to flow into the overflow pipe part 26 during a period in which the opening of the part 26 is closed and a fixed amount of makeup water is refilled in the toilet.

  The water supply device 22 is connected to an external water supply source (not shown) and extends upward from the bottom of the cleaning water tank 18. The water supply device 22 is attached to the upper end of the water supply pipe 32 and supplied with water from the water supply pipe 32. A water supply valve 34 that switches between water discharge and stop water into the wash water tank 18, and a water supply valve float that moves up and down according to fluctuations in the water level in the wash water tank 18 and switches between water discharge and water stop by the water supply valve 34. 36. The washing water discharged from the water supply valve 34 has a substantially constant flow rate per unit time according to the water supply pressure from the water supply source.

  A water supply valve outlet 38 is opened at the lower end of the outer periphery of the water supply pipe 32, and the cleaning water from the water supply valve 34 is discharged from the water supply valve outlet 38 into the cleaning water tank 18.

In the water supply device 22, when the wash water in the wash water tank 18 is drained to the toilet by the drain valve device 24, the water level of the wash water is lowered and the water supply valve float 36 is lowered, whereby the water supply valve 34 is Opening, water discharge from the water supply valve spout 38 is started, and water discharge into the wash water tank 18 from a water supply source (not shown) outside the wash water tank device 16 is started.
Further, when water discharge continues and the water level in the wash water tank 18 rises, the water supply valve float 36 also rises, whereby the water supply valve 34 is closed and the water supply valve outlet 38 is stopped. Thereby, the water level of the wash water in the wash water tank 18 is maintained at the water stop water level when full.

The drain valve device 24 is attached to the bottom surface of the washing water tank 18 and has a drain port forming member 40 that forms a drain port 20 communicating with the drain flow path 9 of the toilet body 2, a valve body 42, and the valve body 42. A valve body holding member 44 to be held, a main shaft member 46 having a lower end portion attached to the valve body holding member 44 and extending in the vertical direction, and an upper end portion (not shown) of the main shaft member 46 are attached to the main shaft member 46. And an operation wire 48 for operating the valve opening operation of the valve element 42 by the pulling operation.
The drain port forming member 40 includes a valve seat 50 that is formed along the upper edge of the drain port 20 and protrudes upward, and the valve seat 50 and the valve body 42 come into contact with each other. 20 is closed.
One end of the operation wire 48 is attached to the upper end (not shown) of the main shaft member 46, and the other end is attached to a wire take-up device 52 attached to the inside of the cleaning water tank 18. The wire winding device 52 is connected to an operation lever 54 attached to the outside of the cleaning water tank 18, and the operation lever 54 is rotated in a direction to execute a predetermined cleaning mode of large cleaning or small cleaning. As a result, the wire winding device 52 is operated in conjunction with the rotation of the operation lever 54, the operation wire 48 is wound by the wire winding device 52, and the drainage valve device is driven by the wound operation wire 48. The main shaft member 46 of 24 is pulled up, and the valve body holding member 44 and the valve body 42 are raised together with the main shaft member 46.

The overflow pipe part 26 includes an overflow pipe 56 and an overflow pipe attachment part 58 to which the lower end of the overflow pipe 56 is attached. The overflow pipe attachment part 58 is located near the bottom surface 18a of the cleaning water tank 18 and is connected to the drain valve device 24. The drain outlet forming member 40 is connected to the outer periphery.
The overflow pipe 56 is provided substantially upright from the overflow pipe mounting portion 58, and an opening 56a that opens upward is formed in a circular shape at the upper end, and the overflow pipe 56 is formed at the lower end of the overflow pipe 56. It is provided so as to communicate with the drainage flow path 9 through the attachment portion 58 and the drainage port 20 inside the drainage port forming member 40.
The height of the opening 56a of the overflow pipe 56 is set to a height higher than the specified water level so as to prevent the washing water from overflowing from the washing water tank. Even if the cleaning water rises above the specified water level by the overflow pipe 56, the cleaning water overflows into the overflow pipe 56 from the opening 56 a, passes through the drainage flow path 9 inside the drainage port forming member 40, and The water is discharged from the single water outlet 10 into the bowl portion 4. The overflow ability means an ability of the overflow pipe to allow the wash water to overflow into the overflow pipe when the wash water rises above a specified water level.

  In this embodiment, as an example, regarding the drain valve device 24, a manual drain valve device in which the user operates the valve body 42 by operating the wire winding device 52 by directly rotating the operation lever 54. However, the present invention is not limited to such an embodiment, and the user pushes an operation button (not shown) provided on the tank to operate the valve body 42 to open / close the drain passage 9. A push-type drain valve device having a valve body actuating mechanism (not shown) that can be operated, and further provided with a driving means such as a motor for rotating the operation lever 54, and an operation button (not shown) set outside. Or a drain valve device that automatically controls the operation of the driving means by a command signal from a human sensor (not shown).

  The make-up water section 28 branches from the flow path from the water supply valve 34 to the water supply valve outlet 38 and extends almost directly above the opening 56 a of the overflow pipe 56, and the make-up water flow path pipe 60. And an overflow tube opening direction fixing portion 62 for fixing the tube with the opening 56a of the overflow tube 56 oriented.

The makeup water flow path pipe 60 of the makeup water section 28 is connected to the water supply valve 34 at the upstream end thereof, so that a substantially constant flow of washing water is stably supplied from the water supply valve 34.
At the tip of the makeup water channel pipe 60, a makeup water channel pipe water discharge port 60a capable of discharging water almost directly below is opened, and the wash water branched from the water supply valve 34 enters the washing water tank 18 from the makeup water channel tube water discharge port 60a. The water is discharged to the overflow pipe 56 and supplied to the toilet body 2 as makeup water.

The overflow pipe opening direction fixing part 62 of the makeup water part 28 is attached to the upper end of the cylindrical part of the overflow pipe 56. The overflow pipe opening direction fixing part 62 is formed in a U-shape, and is replenished on the upper side of the replenishment water flow path pipe spout attachment part 66, the lower side of the overflow pipe opening attachment part 68, and the vertical side on the closed side thereof. And a vertical support portion 70 that vertically supports the water channel pipe water outlet attachment portion 66 from the overflow tube opening attachment portion 68.
An opening at the downstream end of the make-up water flow channel pipe 60 is attached downward on the U-shaped open side of the make-up water flow tube pipe outlet fitting portion 66.
An opening of the overflow pipe 56 is attached upward on the U-shaped open side of the overflow pipe opening attaching portion 68. Accordingly, the center of the makeup water flow path pipe outlet 60a and the center of the opening 56a of the overflow pipe 56 are arranged on the axis of the overflow pipe 56, and the wash water discharged from the makeup water flow path pipe outlet 60a. The stream lines are arranged so as to be directed into the opening 56 a of the overflow pipe 56. The overflow pipe opening attaching portion 68 substantially forms an inflow port at the upper end of the overflow pipe 56 into which wash water exceeding the specified water level (full water level) in the wash water tank 18 flows.
The vertical support portion 70 is set to a height that forms a space in which an opening / closing member to be described later can be disposed between the makeup water flow channel pipe outlet attachment portion 66 and the overflow pipe opening attachment portion 68. Further, the overflow pipe opening attaching portion 68 of the overflow pipe opening direction fixing portion 62 attached above the overflow pipe 56, its vertical support portion 70, its makeup water flow channel pipe outlet fitting portion 66, and its makeup water flow channel pipe discharge. The total height of the makeup water flow path pipe 60 attached to the water inlet attachment portion is set to be lower than the height of the water supply valve 34.

Next, the opening / closing device 30 will be described with reference to FIGS. 2 to 4.
FIG. 4 is a perspective view showing a state where the opening / closing means of the makeup water supply apparatus according to the first embodiment of the present invention is disposed above the overflow pipe.

  The opening / closing device 30 includes a rotation support shaft 72 extending horizontally above the overflow pipe 56, a link 74 extending laterally from the rotation support shaft 72, a float engagement support shaft 76 provided at the tip of the link 74, and a link 74. A rotation restricting member 77 that extends horizontally downward and restricts the rotation range of the link 74 within a predetermined range, a bearing portion 78 attached to the lower portion of the overflow pipe 56, the float engagement support shaft 76, and the bearing portion 78. A float 80 that is supported and moves up and down depending on the water level in the washing water tank 18 and an opening and closing member that opens and closes the opening 56 a of the overflow pipe 56 by a rotational movement centering on a rotation support shaft 72 that is linked to the vertical movement of the float 80 82.

The rotation support shaft 72 includes a first rotation support shaft 84 extending horizontally to the outside of the overflow tube opening attachment portion 68 at the upper portion of the cylindrical portion of the overflow tube 56, and a first rotation support shaft 84 of the overflow tube opening attachment portion 68. On the opposite side, the first rotation support shaft 84 and a second rotation support shaft 86 extending horizontally in the opposite direction are provided.
The first rotation support shaft 84 includes a first rotation engagement portion 88 and a first support shaft 90 having a horizontal axis, and the first rotation engagement portion 88 is centered on the axis of the first support shaft 90. Are engaged so that they can rotate.
The second rotation support shaft 86 includes a second rotation engagement portion 92 and a second support shaft 94 having the same axis as the axis of the first support shaft 90, and the second rotation engagement portion 92 is a second rotation engagement portion 92. The support shaft 94 is engaged so as to be able to rotate around the axis.
Two plate-like parallel links 74 extending in a direction orthogonal to the axis are attached to the first rotation engaging portion 88. Accordingly, the link 74 is integrated with the first rotation engagement portion 88 and rotates around the axis of the first support shaft 90.
The link 74 is attached to the first rotation engagement portion 88 on one end side, and is attached to the float engagement support shaft 76 on the other end side.
The float engagement support shaft 76 extends horizontally between two parallel links 74 and is attached so that the link 74 can rotate about the float engagement support shaft 76. A threaded hole (not shown) is formed at the center of the engagement support shaft 76 so that it can be screwed into a thread groove (described later) formed in the upper part of the float 80.
The rotation restricting member 77 stops the rotational movement of the link 74 in the downward direction by coming into contact with the link 74. The rotation restricting member 77 stops the rotational movement of the link 74, thereby supporting the float engagement. It functions as a stopper that stops the downward movement of the float 80 via the shaft 76.

The float 80 has a thread groove 80b formed on the outer peripheral surface of the upper float upper shaft portion 80a, and the thread groove 80b engages with the thread hole of the float engagement support shaft 76. Therefore, the float 80 is supported so as to be interlocked with the float engagement support shaft 76 in the vertical and horizontal directions. By changing the engagement position by relatively rotating the thread groove 80b and the float engagement support shaft 76, the buoyancy that raises the float 80 by the water level in the cleaning water tank 18 and the weight of the float 80 The vertical position of the float 80 can be adjusted by changing the position (balance position) in which the thread is balanced, and the thread groove 80b and the float engagement support shaft 76 function as float height adjusting means.
The float 80 has a lower lower shaft portion 80 c passing through the bearing portion 78 so that the float 80 can slide in the vertical direction and is supported above the bearing portion 78. A bearing portion 78 is attached to the lower portion of the cylindrical portion of the overflow pipe 56.
When the wash water in the wash water tank 18 rises, the float 80 floats as the water level rises from the position where the float 80 receives buoyancy due to the water level in the wash water tank 18 and starts to rise. When the cleaning water in the cleaning water tank 18 is lowered, the float 80 is set to descend in accordance with the lowering of the water level until the float 80 stops at the bearing portion 78 or above. Yes.

Next, the opening / closing member 82 will be described.
The opening / closing member 82 of the opening / closing device 30 is formed in a cover shape capable of covering the upper part of the opening 56a of the overflow pipe 56 when the opening 56a of the overflow pipe 56 is closed. It is formed in a partially spherical shape that protrudes and curves, and is formed in a dome shape that is formed to descend radially from the top like an umbrella.
The opening / closing member 82 includes a first support shaft attachment portion 82a provided at one end thereof, a second support shaft attachment portion 82b provided at the other end thereof, and a first support shaft attachment portion 82a to a second support shaft attachment portion 82b. A first arc edge 82c that forms an arcuate edge of one end of the opening / closing member 82 that extends to an arc, and an arcuate edge that forms the arcuate edge of the other end of the opening / closing member 82 that extends from the first support shaft attachment portion 82b to the second support shaft attachment portion 82b. A second arc edge 82d, an outer surface 82e of the opening / closing member 82 that forms a partial spherical region between the first arc edge 82c and the second arc edge 82d toward the outside of the opening / closing member 82, and an opening / closing member. An inner surface 82f of the opening / closing member 82 that forms a partial spherical region between the first arc edge 82c and the second arc edge 82d toward the inside of the opening 82 is provided.

The first support shaft attachment portion 82 a of the opening / closing member 82 is attached to the first rotation engagement portion 88 outside the overflow pipe opening attachment portion 68. The second support shaft attachment portion 82 b of the opening / closing member 82 is attached to the second rotation engagement portion 92 on the outer side opposite to the first support shaft attachment portion 82 a of the overflow pipe opening attachment portion 68. Therefore, the opening / closing member 82 is provided to be rotatable about an axis connecting the first support shaft 90 and the second support shaft 94.
More specifically, the outer surface 82e of the opening / closing member 82 is formed in the shape of a ¼ spherical outer surface obtained by vertically and horizontally cutting a sphere into four equal parts. A space between the outer surface 82e and the inner surface 82f of the opening / closing member 82 is formed in a thin plate shape having a substantially uniform thickness, and the inner surface 82f of the opening / closing member 82 has a surface having substantially the same shape as the outer surface 82e of the opening / closing member 82. When the opening / closing member 82 opens the opening 56a of the overflow pipe 56, the gap L is formed between the inner surface 82f and the opening 56a of the overflow pipe 56 so that the washing water can flow. An inner surface 82f of the opening / closing member 82 is disposed so as to be formed.

The first arc edge 82c and the second arc edge 82d of the opening / closing member 82 are formed so that the opening 56a of the overflow pipe 56 is viewed from directly above the overflow pipe 56 when the opening / closing member 82 closes the opening 56a of the overflow pipe 56. It is arranged outside.
When the opening / closing member 82 closes the opening 56a of the overflow pipe 56, the top portion 82g of the outer surface 82e of the opening / closing member 82 is set at the highest height position of the outer surface 82e of the opening / closing member 82. Therefore, if the height of the makeup water flow channel pipe outlet 60a is set higher than the height of the top portion 82g of the outer surface 82e, the opening / closing member 82 can be disposed on the opening 56a of the overflow tube 56, and the makeup water flow channel The height of the pipe spout 60a can be set lower than the height of the water supply valve 34, and the switchgear 30 can be attached with the conventional washing water tank design.

Next, the operation (action) of the makeup water supply device according to the first embodiment of the present invention will be described.
First, referring to FIGS. 5A to 5D, the washing water tank apparatus provided with the makeup water supply device according to the first embodiment of the present invention and the flush toilet to which the washing water tank apparatus is applied 2 are executed. The large cleaning mode among the types of cleaning modes will be described.

First, FIG. 5A shows a makeup water supply device 19 in the washing water tank device 16 showing a state before drainage and water supply in the large washing mode of the makeup water supply device according to the first embodiment of the present invention are started. It is the fragmentary front sectional view which fractured | ruptured partially.
In the makeup water supply device 19 in a state before starting drainage and water supply in the large washing mode as shown in FIG. 5A, the valve element 42 of the drainage valve device 24 comes into contact with the valve seat 50 and drains. The mouth 20 is closed, and the water level of the cleaning water in the cleaning water tank 18 is maintained at a substantially water stop level WL0 when full.
The float 80 is lifted and stopped by buoyancy, the float engagement support shaft 76 that engages with the float upper shaft portion 80a of the float 80 is lifted, and the float engagement support shaft 76 is lifted. As a result, the link 74 and the first rotation engaging portion 88 integral therewith rotate around the axis of the first support shaft 90, and the opening / closing member 82 passes through the first support shaft mounting portion 82a (see FIG. 4). Rotating about the axis of the first support shaft 90 interlocking with the rotation of the first rotation engaging portion 88, being disposed laterally in the lateral direction of the opening 56a of the overflow pipe 56, the opening 56a of the overflow pipe 56 being directed upward It is in an open state.

  In the makeup water supply device 19 in the state after the drainage in the large washing mode is started, when the user rotates the operation lever 54 in the direction to execute the predetermined large washing mode, the wire winding device 52 is activated. Then, the operation wire 48 is wound up by the winding amount in the large cleaning mode, the main shaft member 46, the valve body holding member 44 and the valve body 42 of the drain valve device 24 are pulled up with respect to the valve seat 50, and the drain port 20 is The cleaning water in the cleaning water tank 18 is discharged to the toilet body 2 through the drainage flow path 9. Therefore, the water level in the washing water tank 18 is rapidly lowered.

In the opening / closing device 30 of the makeup water supply device 19, the float 80 interlocking with the water level is lowered, the float engagement support shaft 76 engaged with the float upper shaft portion 80 a of the float 80 is lowered, and the float 74 is engaged with the float 74. The support shaft 76 side rotates downward about the axis of the first support shaft 90, and simultaneously with this rotation, the first rotation engaging portion 88 integrated with the link 74 rotates in the same direction. Then, the opening / closing member 82 rotates in the same direction around the axis of the first support shaft 90 in conjunction with the rotation of the first rotation engaging portion 88, and the overflow pipe 56 from the lateral direction of the opening 56 a of the overflow pipe 56. The first circular arc edge 82c of the opening / closing member 82 passes over the central axis A common to the makeup water channel pipe water discharge port 60a and the opening 56a of the overflow pipe 56. Thus, the upper part of the opening 56a of the overflow pipe 56 is closed.
After the valve body 42 opens the drain port 20, for example, after the elapse of a predetermined period until the opening / closing member 82 is in a state of closing the opening 56 a of the overflow pipe 56, the water supply valve 34 of the water supply device 22 is opened. At almost the same time, the cleaning water is discharged into the cleaning water tank 18 from the water supply valve outlet 38 of the water supply valve 34, and at the same time, the supply water is supplied to the supply water channel pipe 60 of the supply water section 28 branched from the water supply valve 34. The supplied cleaning water is discharged almost directly from the make-up water channel pipe water discharge port 60 a toward the opening 56 a of the overflow pipe 56.

Next, FIG. 5B is a partially broken view of the makeup water supply device in the washing water tank device showing a state immediately after the end of drainage in the large cleaning mode of the makeup water supply device according to the first embodiment of the present invention. It is a partial front sectional view.
As shown in FIG. 5 (b), in the makeup water supply device 19 in a state immediately after the end of drainage in the large washing mode, the main shaft member 46 and the valve body 42 of the drainage valve device 24 are further lowered as the water level is lowered. The body 42 comes into contact with the valve seat 50, the drain port 20 is closed, the drainage in the large washing mode of the drain valve device 24 is finished, and the washing water discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22. Is continuously discharged into the washing water tank 18, the makeup water branched from the water supply valve 34 is supplied to the makeup water channel pipe 60 of the makeup water section 28, and the makeup water is almost directly below the makeup water channel pipe outlet 60a. The water is discharged toward
The descent of the water level in the wash water tank 18 is stopped at the water stop water level WL1.
In the opening / closing device 30 of the makeup water supply device 19, the float 80 descends according to the water level, but the lower limit position of the descending movement, that is, the link 74 is in contact with the rotation regulating member 77, The top portion 82g of the outer surface 82e of the member 82 is located immediately below the central axis of the makeup water flow passage pipe outlet 60a, and the opening / closing member 82 is disposed so as to substantially cover the opening 56a of the overflow pipe 56. The opening 56a of the overflow pipe 56 is closed so as to block the inflow.

The make-up water discharged from the make-up water channel pipe spout 60a falls almost directly below, hits the top part 82g of the outer surface 82e of the opening / closing member 82 almost directly below, protrudes from the top part 82g above the opening / closing member 82 and curves. Then, it diffuses and flows down radially along the partially spherical outer surface 82e. Then, the makeup water that has flowed down flows from the first arc edge 82c and the second arc edge 82d into the wash water tank 18 outside the opening 56a of the overflow pipe 56, and is stored in the wash water tank 18 as wash water ( Water supply).
The water level in the wash water tank 18 gradually starts to rise from the stop water level WL1 by the wash water discharged from the water supply valve discharge port 38 and the wash water discharged from the makeup water flow channel pipe discharge port 60a.

Next, FIG. 5 (c) shows that the water level in the cleaning water tank rises to the reference water level WL2 with time after the drainage in the large cleaning mode of the makeup water supply device according to the first embodiment of the present invention. In the washing water tank apparatus which shows the state which carried out, it is the fragmentary front sectional drawing which fractured | ruptured the make-up water supply apparatus partially.
As shown in FIG. 5 (c), in the makeup water supply device 19 in a state where the water level in the cleaning water tank 18 rises to the reference water level WL2 with time after the drainage in the large cleaning mode is finished, The body 42 remains in a state where the drain port 20 is closed, and the wash water discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22 is continuously discharged into the wash water tank 18. The cleaning water branched from is supplied to the make-up water flow channel pipe 60, and the wash water is discharged from the make-up water flow channel pipe outlet 60a substantially downward.
In the opening / closing device 30 of the makeup water supply device 19, the water level in the wash water tank 18 is in a position (balance position) where the buoyancy that raises the float 80 by the water level in the wash water tank 18 and the weight of the float 80 balance. A float engagement support shaft that rises to engage with the float upper shaft portion 80a of the float 80 when the water level rises to a reference water level WL2 that corresponds to a water level lower than the water stop water level WL0 when full. 76 rises, the float engagement support shaft 76 side of the link 74 rotates upward about the axis of the first support shaft 90, the first rotation engagement portion 88 integral with the link 74 rotates in the same direction, The opening / closing member 82 rotates in the same direction around the axis of the first support shaft 90 in conjunction with the rotation of the first rotation engaging portion 88, and the upward direction of the opening 56 a of the overflow pipe 56 And the first arc edge 82c of the opening / closing member 82 is positioned on the central axis A common to the makeup water passage pipe outlet 60a and the opening 56a of the overflow pipe 56. The opening / closing member 82 is in a state of opening the opening 56 a of the overflow pipe 56 from the rotational position.

Next, FIG. 5 (d) shows that the water level in the cleaning water tank rises to the water level WL3 close to the still water level with time after the end of drainage in the large cleaning mode of the makeup water supply device according to the first embodiment of the present invention. FIG. 5 is a partial front cross-sectional view in which a makeup water supply device is partially broken in a washing water tank device showing a state immediately before water supply is completed.
As shown in FIG. 5 (d), after the end of drainage in the large cleaning mode, the makeup water in a state immediately before the water level in the cleaning water tank 18 is raised to the water level WL3 close to the water stop water level with time and the water supply ends. In the supply device 19, the valve body 42 remains in the state in which the drain port 20 is closed, and the cleaning water discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22 continues in the cleaning water tank 18. The replenishing water branched off from the water supply valve 34 is supplied to the replenishing water flow channel pipe 60, and the cleaning water is discharged from the replenishing water flow channel pipe spout 60a substantially downward.
In the opening / closing device 30 of the makeup water supply device 19, when the water level in the wash water tank 18 rises to the water level WL3, the float 80 further rises and engages with the float upper shaft portion 80a of the float. 76 further rises, the float engagement support shaft 76 side of the link 74 rotates upward about the axis of the first support shaft 90, and the first rotation engagement portion 88 integral with the link 74 rotates in the same direction. The opening / closing member 82 rotates in the same direction around the axis of the first support shaft 90 in conjunction with the rotation of the first rotation engaging portion 88, and further rotates in the lateral direction of the opening 56 a of the overflow pipe 56. Then, the first arc edge 82c of the opening / closing member 82 moves from the position directly above the opening 56a of the overflow pipe 56 to the outside, and the upper portion of the opening 56a of the overflow pipe 56 is open. That.
The makeup water spouted from the makeup water channel pipe spout 60a falls almost directly, flows into the opening 56a of the overflow pipe 56, flows into the drainage channel through the overflow pipe 56, and supplies the toilet body 2 with the makeup water. As refilled.

Finally, as shown in FIG. 5 (a), after the end of drainage in the large cleaning mode, the makeup water supply device in a state where the water level in the cleaning water tank 18 is raised to the stop water level WL0 with time and the water supply ends. 19, the valve body 42 remains in the state in which the drain port 20 is closed, and when the water level in the washing water tank 18 rises to the stop water level WL0, the water supply valve float 36 rises, whereby the water supply valve 34 is The water supply valve spout 38 is closed, the supply of the wash water from the makeup water flow pipe 60 branched from the water supply valve 34 is stopped, the water discharge from the makeup water flow pipe 60 spout is stopped, and the wash water tank The water level in 18 is almost stopped at the still water level WL0.
In the opening / closing device 30 of the makeup water supply device 19, the rise of the water level in the wash water tank 18 is stopped at the stop water level WL 0, the rise of the float 80 is stopped, and the float 80 is engaged with the float upper shaft portion 80 a. The rise of the float engagement support shaft 76 is stopped, the upward rotation of the link 74 on the float engagement support shaft 76 side is stopped, the rotation of the first rotation engagement portion 88 integrated with the link 74 is stopped, and the opening / closing member 82 is stopped. In conjunction with the rotation of the first rotation engaging portion 88, the rotation in the same direction around the axis of the first support shaft 90 is stopped, the rotation is stopped laterally in the lateral direction of the opening 56a of the overflow pipe 56, and the overflow The upper part of the opening 56a of the tube 56 is open. Therefore, the makeup water supply device 19 returns to the state before the drainage and water supply in the large washing mode are started.
The amount of water supplied from the water supply valve 34 is substantially constant. After the valve body 42 of the drain valve device 24 opens the drain port 20 and starts large cleaning, the drain port 20 is closed and the water level in the cleaning water tank 18 is reached. The predetermined period of the large cleaning mode until the temperature rises to the predetermined reference water level WL2 is set to be almost constant for each cleaning.

  Next, referring to FIGS. 6A to 6D, the washing water tank apparatus including the makeup water supply apparatus according to the first embodiment of the present invention and the flush toilet to which the washing water tank apparatus is applied are executed. The small cleaning mode will be described.

First, FIG. 6A is a partial view of a makeup water supply device in a wash water tank device showing a state before drainage and water supply are started in the small cleaning mode of the makeup water supply device according to the first embodiment of the present invention. FIG.
In the makeup water supply device 19 in a state before the drainage in the small cleaning mode as shown in FIG. 6A is started, the same as in the case of the large cleaning mode shown in FIG. 5A described above. Therefore, the description is omitted.

  In the makeup water supply device 19 in a state immediately after drainage in the small cleaning mode is started, when the user rotates the operation lever 54 in a direction to execute the predetermined small cleaning mode, the wire winding device 52 is activated. Then, the operation wire 48 is wound up by the winding amount in the small cleaning mode, the main shaft member 46, the valve body holding member 44 and the valve body 42 of the drain valve device 24 are pulled up with respect to the valve seat 50, and the drain port 20 is The cleaning water in the cleaning water tank 18 is discharged to the toilet body 2 through the drainage flow path 9. Therefore, the water level in the washing water tank 18 is rapidly lowered.

  In the opening / closing device 30 of the makeup water supply device 19, the float 80 interlocking with the water level is lowered, the float engagement support shaft 76 engaged with the float upper shaft portion 80 a of the float 80 is lowered, and the float 74 is engaged with the float 74. The support shaft 76 side rotates downward about the axis of the first support shaft 90, rotates in the same direction as the first rotation engagement portion 88 integral with the link 74, and the opening / closing member 82 is moved to the first rotation engagement portion. Rotating in the same direction around the axis of the first support shaft 90 in conjunction with the rotation of 88, rotating from the lateral direction of the opening 56a of the overflow pipe 56 toward the upper direction of the opening 56a of the overflow pipe 56, The first arc edge 82c of the opening / closing member 82 passes over the central axis A common to the makeup water passage pipe outlet 60a and the opening 56a of the overflow pipe 56, and above the opening 56a of the overflow pipe 56. The state to close.

  After the valve body 42 opens the drain port 20, for example, after the elapse of a predetermined period, such as a period until the opening / closing member 82 is closed above the opening 56 a of the overflow pipe 56, The valve 34 is opened, and substantially simultaneously, the cleaning water is discharged from the water supply valve outlet 38 of the water supply valve 34 into the cleaning water tank 18, and at the same time, the supply water is supplied to the supply water channel pipe 60 branched from the water supply valve 34. The supplied makeup water is discharged almost directly from the makeup water passage pipe outlet 60a toward the opening 56a of the overflow pipe 56.

Next, FIG. 6B is a partially broken view of the makeup water supply device in the washing water tank device showing a state immediately after the end of drainage in the small cleaning mode of the makeup water supply device according to the first embodiment of the present invention. It is a partial front sectional view.
As shown in FIG. 6 (b), in the makeup water supply device 19 in the state immediately after the end of drainage in the small washing mode, the main shaft member 46 and the valve body 42 of the drainage valve device 24 are further lowered as the water level is lowered. The body 42 comes into contact with the valve seat 50, the drain port 20 is closed, the drainage in the small cleaning mode of the drain valve device 24 is finished, and the cleaning water discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22 Is continuously discharged into the cleaning water tank 18, the cleaning water branched from the water supply valve 34 is supplied to the makeup water passage pipe 60, and the washing water is spouted from the makeup water passage pipe outlet 60 a substantially downward. It is in the state.
The descent of the water level in the wash water tank 18 is stopped at the water stop water level WL4.
In the opening / closing device 30 of the makeup water supply device 19, the float 80 descends according to the water level, but the lower limit position of the descending movement, that is, the link 74 is in contact with the rotation regulating member 77, The top portion 82g of the outer surface 82e of the member 82 is located immediately below the central axis of the makeup water flow passage pipe outlet 60a, and the opening / closing member 82 is disposed so as to substantially cover the opening 56a of the overflow pipe 56. The opening 56a of the overflow pipe 56 is closed so as to block the inflow.

The wash water discharged from the makeup water channel pipe outlet 60a falls almost directly below, hits the top 82g of the outer surface 82e of the opening / closing member 82 almost directly below, protrudes above the opening / closing member 82 from the top 82g and curves. Then, it diffuses and flows down radially along the partially spherical outer surface 82e, flows down from the first arc edge 82c and the second arc edge 82d to the outside of the opening 56a of the overflow pipe 56, and is washed as washing water. Water is stored (supplied) in the tank 18.
The water level in the cleaning water tank 18 gradually starts to rise from the water stop water level WL4 due to the cleaning water discharged from the water supply valve outlet 38 and the cleaning water discharged from the makeup water passage pipe outlet 60a.

Next, FIG. 6 (c) shows that the water level in the cleaning water tank rises to the reference water level WL2 with time after the drainage in the small cleaning mode of the makeup water supply device according to the first embodiment of the present invention. In the washing water tank apparatus which shows the state which carried out, it is the fragmentary front sectional drawing which fractured | ruptured the make-up water supply apparatus partially.
As shown in FIG. 6 (c), in the makeup water supply device 19 in a state where the water level in the cleaning water tank 18 rises to the reference water level WL2 with time after the drainage in the small cleaning mode is finished, The body 42 remains in a state where the drain port 20 is closed, and the wash water discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22 is continuously discharged into the wash water tank 18. The cleaning water branched from is supplied to the make-up water flow channel pipe 60, and the wash water is discharged from the make-up water flow channel pipe outlet 60a substantially downward.
In the opening / closing device 30 of the makeup water supply device 19, when the water level in the cleaning water tank 18 rises to the reference water level WL2, the float 80 rises and engages with the float upper shaft portion 80a of the float 80. The shaft 76 ascends, the float engagement support shaft 76 side of the link 74 rotates upward about the axis of the first support shaft 90, and the first rotation engagement portion 88 integral with the link 74 rotates in the same direction. The opening / closing member 82 rotates in the same direction around the axis of the first support shaft 90 in conjunction with the rotation of the first rotation engaging portion 88, so that the overflow pipe 56 is opened from above the opening 56 a of the overflow pipe 56. Rotating in the lateral direction of the opening 56a, the first arc edge 82c of the opening / closing member 82 is positioned on the central axis A that is common to the makeup water passage pipe outlet 60a and the opening 56a of the overflow pipe 56. Closing member 82 in a state of opening the upper opening 56a of the overflow pipe 56 from the rotational position.

Next, FIG. 6 (d) shows that the water level in the cleaning water tank rises to the water level WL3 close to the still water level with time after the end of drainage in the small cleaning mode of the makeup water supply device according to the first embodiment of the present invention. FIG. 5 is a partial front cross-sectional view in which a makeup water supply device is partially broken in a washing water tank device showing a state immediately before water supply is completed.
As shown in FIG. 6 (d), after draining in the small cleaning mode, the water level in the cleaning water tank 18 rises to the water level WL3 close to the stop water level with time, and the makeup water just before the water supply ends. In the supply device 19, the valve body 42 remains in the state in which the drain port 20 is closed, and the cleaning water discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22 continues in the cleaning water tank 18. The replenishing water branched off from the water supply valve 34 is supplied to the replenishing water flow channel pipe 60, and the cleaning water is discharged from the replenishing water flow channel pipe spout 60a substantially downward.
In the opening / closing device 30 of the makeup water supply device 19, when the water level in the wash water tank 18 rises to the water level WL3, the float 80 further rises and engages with the float upper shaft portion 80a of the float. 76 further rises, the float engagement support shaft 76 side of the link 74 rotates upward about the axis of the first support shaft 90, and the first rotation engagement portion 88 integral with the link 74 rotates in the same direction. The opening / closing member 82 rotates in the same direction around the axis of the first support shaft 90 in conjunction with the rotation of the first rotation engaging portion 88, and further rotates in the lateral direction of the opening 56 a of the overflow pipe 56. Then, the first arc edge 82c of the opening / closing member 82 moves from the position directly above the opening 56a of the overflow pipe 56 to the outside, and the upper portion of the opening 56a of the overflow pipe 56 is open. That.
The wash water discharged from the make-up water channel pipe spout 60a falls almost directly, flows into the opening 56a of the overflow pipe 56, flows through the overflow pipe 56 to the drain channel, and supplies the toilet body 2 with the make-up water. As refilled.

Next, as shown in FIG. 6 (a), after the end of drainage in the small cleaning mode, the makeup water supply device in a state where the water level in the cleaning water tank 18 rises to the stop water level WL0 with time and the water supply ends. 19, the valve body 42 remains in the state in which the drain port 20 is closed, and when the water level in the washing water tank 18 rises to the stop water level WL0, the water supply valve float 36 rises, whereby the water supply valve 34 is The water supply valve spout 38 is closed, the supply of the wash water from the makeup water flow pipe 60 branched from the water supply valve 34 is stopped, the water discharge from the makeup water flow pipe 60 spout is stopped, and the wash water tank The water level in 18 is almost stopped at the still water level WL0.
In the opening / closing device 30 of the makeup water supply device 19, the rise of the water level in the wash water tank 18 is stopped at the stop water level WL 0, the rise of the float 80 is stopped, and the float 80 is engaged with the float upper shaft portion 80 a. The rise of the float engagement support shaft 76 is stopped, the upward rotation of the link 74 on the float engagement support shaft 76 side is stopped, the rotation of the first rotation engagement portion 88 integrated with the link 74 is stopped, and the opening / closing member 82 is stopped. In conjunction with the rotation of the first rotation engaging portion 88, the rotation in the same direction around the axis of the first support shaft 90 is stopped, the rotation is stopped laterally in the lateral direction of the opening 56a of the overflow pipe 56, and the overflow The upper part of the opening 56a of the tube 56 is open.
The amount of water supplied from the water supply valve 34 is substantially constant, and after the valve body 42 of the drain valve device 24 opens the drain port 20 to start small cleaning, the drain port 20 is closed and the water level in the cleaning water tank 18 is reached. The predetermined period of the small cleaning mode until the temperature rises to the predetermined reference water level WL2 is set to be almost constant for each cleaning.

Next, the effect of the makeup water supply device according to the first embodiment of the present invention described above will be described.
First, the opening / closing member of the opening / closing device 30 disposed above the opening 56a of the overflow pipe 56 in a state where the makeup water portion 28 is branched from the water supply valve 34 and fixed to be directed to the opening 56a of the overflow pipe 56. 82, the valve body 42 of the drain valve device 24 opens the drain port 20 and starts large cleaning or small cleaning. Then, the drain port 20 is closed and the water level in the cleaning water tank 18 becomes the predetermined reference water level WL2. In a predetermined period until the rise, the opening 56a of the overflow pipe 56 is closed to prevent the makeup water from the makeup water flow pipe outlet 60a of the makeup water section 28 from flowing into the overflow pipe 56, and this makeup water. Is supplied into the washing water tank 18 and, during a period other than the predetermined period, the opening 56a of the overflow pipe 56 is opened and the supply water channel pipe outlet 60a of the supply water section 28 is opened. Makeup water can be flowed stably in an overflow pipe 56. Therefore, a fixed amount of makeup water can be stably refilled in the toilet body 2 from the makeup water section 28 in each of the makeup water section 28, large washing and small washing.

  According to the makeup water supply device 19 according to the first embodiment of the present invention, when the water level in the wash water tank 18 is at a water level below a predetermined reference water level WL2 that is less than the full water level WL0, the opening / closing member 82 is floated. In conjunction with 80, the opening 56a of the overflow pipe 56 is closed to prevent the makeup water from the makeup water flow path pipe spout 60a of the makeup water section 28 from flowing into the overflow pipe 56, and this makeup water is used as washing water. When the water level supplied to the tank 18 and the water level in the replenishing water section 28 and the washing water tank 18 is equal to or higher than the predetermined reference water level WL2, the opening / closing member 82 is connected to the float 80. In conjunction with this, the opening 56 a of the overflow pipe 56 is opened, and the makeup water from the makeup water passage pipe outlet 60 a of the makeup water section 28 flows stably into the overflow pipe 56. It can be. Therefore, in each of the large washing and the small washing, the toilet body 2 can be refilled with a certain amount of makeup water from the makeup water section 28 with a simple structure.

In addition, according to the makeup water supply device 19 according to the first embodiment of the present invention, the opening / closing member 82 of the opening / closing device 30 rotates around the first support shaft 90 in conjunction with the vertical movement of the float 80. The opening 56a of the tube 56 can be opened and closed. Therefore, the toilet bowl stably supplies a certain amount of makeup water out of the washing water spouted from the makeup water channel pipe spout 60a of the makeup water section 28 using a mechanically simple structure regardless of electronic control or the like. The main body 2 can be refilled.
Further, since the opening / closing member 82 of the opening / closing device 30 opens and closes the opening 56a of the overflow pipe 56 in a direction in which the opening / closing member 82 rotates about the first support shaft 90, the opening 56a of the overflow pipe 56 extends in the vertical (height) direction. Compared to the one that opens and closes, the structure can be made more compact.

  Furthermore, according to the makeup water supply device 19 according to the first embodiment of the present invention, the opening / closing member 82 of the opening / closing device 30 opens the opening 56a of the overflow tube 56 in the open region of the opening 56a of the overflow tube 56. Since it is opened over almost the entire area and a gap of a predetermined interval is formed between the opening 56a and the opening / closing member 82, the washing water that exceeds the specified water level (full water level WL0) corresponding to the opening 56a of the overflow pipe 56 Can be discharged from the gap to the overflow pipe 56, and the overflow capability can be secured by suppressing the decrease in the overflow capability. Further, the opening / closing member 82 of the opening / closing device 30 opens the opening 56a of the overflow pipe 56 only during a predetermined period when the water level in the cleaning water tank 18 is at a level higher than the reference water level WL2, and supplies the replenishing water unit 28. Since the wash water discharged from the make-up water channel pipe water discharge port 60a is caused to flow into the overflow pipe 56, a fixed amount of make-up water is stably supplied from the make-up water section 28 in each of the large washing and the small washing. The toilet body 2 can be refilled. it can.

  Furthermore, according to the make-up water supply device 19 according to the first embodiment of the present invention, when the opening / closing member 82 closes the opening 56a of the overflow pipe 56, water is discharged from the make-up water channel pipe water discharge port 60a of the make-up water section 28. Since the makeup water is discharged toward the top portion 82g of the substantially spherical outer surface 82e of the opening / closing member 82, the makeup water is uniformly diffused into the cleaning water tank 18 along the spherical outer surface 82e. Therefore, it is possible to reduce the water splashing sound by reducing the splashing of the makeup water when the makeup water 28 is spouted to the top portion 82g of the outer surface 82e of the opening / closing member 82.

  Furthermore, according to the makeup water supply device 19 according to the first embodiment of the present invention, a position where the buoyancy that raises the float 80 by the water level in the washing water tank 18 by the adjusting member 124 and the weight of the float 80 balance (balance position). Can be adjusted in the vertical direction, and the timing at which the opening and closing member 82 opens and closes the opening 56 a of the overflow pipe 56 can be adjusted. Therefore, the amount of replenishment water to the toilet body 2 can be changed according to the capacity of the wash water tank used for toilet flushing, and a fixed amount of replenishment is supplied from the replenishment water section 28 in each case of large washing and small washing. Water can be stably refilled in the toilet body 2.

Next, referring to FIGS. 7 to 12, a makeup water supply device according to the second embodiment of the present invention, a washing water tank device provided with the makeup water supply device, and a flush toilet to which the washing water tank device is applied. Will be explained.
FIG. 7 is a partial cross-sectional front view in which a part of the makeup water supply apparatus is partially broken with the lid removed from the internal structure of the cleaning water tank apparatus including the makeup water supply apparatus according to the second embodiment of the present invention. FIG. 8 is a top view showing the internal structure of the washing water tank apparatus having the makeup water supply apparatus according to the second embodiment of the present invention with the lid removed, and FIG. FIG. 10 is a perspective view of a part of a makeup water supply device and an opening / closing means of a makeup water supply device according to a second embodiment, and FIG. 10 is a part of the makeup water device and an opening of the makeup water supply device according to a second embodiment of the present invention. 11 is an exploded perspective view of the opening / closing means, and FIGS. 11A to 11D are a part of a makeup water supply device showing respective states in the large cleaning mode of the makeup water supply device according to the second embodiment of the present invention. It is the fragmentary sectional front view which fractured | ruptured, Fig.12 (a)-(d) Is a partial cross-sectional front view a portion partially broken the makeup water supply device showing each state in the partial flushing mode of supplementary water supply device according to a second embodiment of the present invention.
Here, in the makeup water supply apparatus according to the second embodiment of the present invention shown in FIGS. 7, 8, 11 and 12, the makeup water according to the first embodiment shown in FIGS. 2, 3, 5 and 6 is used. The same parts as those of the supply device are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 7 and 8, a replenishment water supply device 96 is provided in the wash water tank 18 of the wash water tank device 16 according to the second embodiment of the present invention. The replenishment water supply device 96 is a water supply device. 22, branching outward from the overflow pipe portion 26 and extending obliquely above the overflow pipe portion 26, and refilling the toilet body 2 with makeup water. Further, above the opening of the overflow pipe portion 26, water is discharged from the makeup water portion 98. The opening of the overflow pipe part 26 is closed so that the supplied makeup water is blocked from flowing into the overflow pipe part 26 during a period other than the period during which a certain amount of makeup water is refilled. And an opening / closing device 100 that opens the overflow pipe portion 26 so as to flow into the overflow pipe portion 26 during the refilling period.

  As shown in FIG. 10, the replenishing water section 98 is branched from the flow path from the water supply valve 34 to the water supply valve outlet 38 and extends to the obliquely upward outward of the opening 56 a of the overflow pipe 56. And an overflow pipe opening direction fixing portion 104 that fixes the makeup water flow path pipe water discharge port 102a formed at the tip of the makeup water flow path pipe 102 toward the opening 56a of the overflow pipe 56 and obliquely downward. .

The makeup water flow path pipe 102 of the makeup water section 98 is connected to the water supply valve 34 at the upstream end thereof, so that a substantially constant flow of makeup water is stably supplied from the water supply valve 34.
At the tip of the makeup water channel pipe 102, a makeup water channel pipe outlet 102a capable of discharging water obliquely downward is opened, and the makeup water branched from the water supply valve 34 enters the washing water tank 18 from the makeup water channel pipe outlet 102a. The water is discharged to the overflow pipe 56 and supplied to the toilet body 2 as makeup water.

The overflow pipe opening direction fixing portion 104 of the makeup water portion 98 is attached to the upper end of the cylindrical portion of the overflow pipe 56.
The overflow tube opening direction fixing portion 104 extends outward from the outer periphery of the outer annular portion 108, the inner annular portion 106 on the inner side, the outer annular portion 108 provided concentrically outside the inner annular portion 106, and the outer annular portion 108. And an L-shaped support portion 110 formed so as to rise upward in an L-shape therefrom, and a replenishing water flow channel pipe outlet fitting portion 112 provided at the upper end of the L-shaped support portion 110.

An opening 56 a of the overflow pipe 56 is attached to the inner annular portion 106 upward. The inner annular portion 106 of the overflow pipe opening direction fixing portion 104 substantially forms an inflow port at the upper end of the overflow pipe 56 into which wash water exceeding the specified water level (full water level) in the wash water tank 18 flows. ing.
The outer annular portion 108 is radially connected to the inner annular portion 106 by three radial connecting portions 109 provided at three locations, and the inner annular portion 106 and a radius that connects the inner annular portion 106 and the outer annular portion 108. Between the direction connecting portion 109 and the outer annular portion 108, a guide space 114 capable of guiding an opening / closing device 100 described later is formed.

The L-shaped support part 110 is formed in an L shape that extends horizontally outward from the outer periphery of the outer annular part 108 and extends vertically upward from the outer end thereof, and is fixed to the upper end of the L-shaped support part 110. The replenishment water flow channel pipe spout attachment portion 112 is arranged so that the replenishment water discharged from the replenishment water flow channel pipe spout 102 a flows into the opening 56 a of the overflow pipe 56 from obliquely above and outside the opening 56 a of the overflow pipe 56. Positioning.
The make-up water channel pipe spout attachment portion 112 is attached to the make-up water channel pipe spout attaching portion 112 so that the make-up water channel pipe spout 102a faces the opening 56a of the overflow pipe 56 obliquely downward.
Accordingly, the make-up water channel pipe 102 is fixed toward the opening 56 a of the overflow pipe 56 by the make-up water channel pipe water spout attachment 112 at the tip of the L-shaped support part 110 of the overflow pipe opening direction fixing part 104.

Next, the opening / closing device 100 will be described with reference to FIGS. 7 to 10.
The opening / closing device 100 includes a float 116 formed in a cylindrical shape around the overflow pipe 56, and an opening / closing member 118 that extends upward from the upper portion of the float 116 and opens and closes the opening 56 a of the overflow pipe 56.

  The float 116 is a float that moves up and down depending on the water level in the cleaning water tank 18, and is attached to be slidable in the vertical direction along the periphery of the overflow pipe 56. A float lower receiving portion 120 is attached to the lower portion of the cylindrical portion of the overflow pipe 56. When the washing water in the washing water tank 18 rises, the float 116 floats in accordance with the rise in water level from the position where the float 116 receives buoyancy due to the water level in the washing water tank 18 and starts to rise. When the cleaning water in the cleaning water tank 18 descends, the float 116 descends with the lowering of the water level until the float 116 is caught on the float lower receiving portion 120 and stopped. Is set.

Next, the opening / closing member 118 will be described.
When the opening / closing member 118 of the opening / closing device 100 closes the opening 56a of the overflow pipe 56, the opening 56a of the overflow pipe 56 has a substantially half outer periphery of the opening 56a of the overflow pipe 56 from the lateral direction and obliquely upward. More specifically, the opening / closing member 118 is extended in the shape of a wall upward along the outer circumference of the opening 56a of the overflow pipe 56, and the makeup water passage pipe outlet 102a. The surface of the side facing the replenishment water channel pipe water discharge port 102a projects in the direction and is formed into a curved arc shape.
The opening / closing member 118 is inserted into a semi-cylindrical guide space 114 formed between the inner annular portion 106 and the outer annular portion 108 of the overflow tube opening direction fixing portion 104, and penetrates the overflow tube opening direction fixing portion 104. And can move up and down with respect to the overflow tube opening direction fixing portion 104.

The opening / closing member 118 has a float attaching portion 118a attached along the inner circumferential surface of the float 116 at a lower portion thereof, an outer surface 118b forming a circumferential surface region protruding toward the outside of the opening / closing member 118, and an opening / closing member. The inner surface 118c that forms the inner circumferential surface area of 118, and the opening / closing member 118 was set to the highest height position of the circumferential surface of the outer surface 118b when the opening 56a of the overflow pipe 56 was closed. The top part 118d is provided in the inner surface 118c, and the hook part 118e which can be hooked on the float lower receiving part 120 is provided.
The float attachment portion 118 a of the opening / closing member 118 extends to the lower end of the float 116 along the inner circumferential surface of the float 116.
The outer surface 118b of the opening / closing member 118 is formed over a substantially semicircle of the outer circumferential circle of the opening 56a of the overflow pipe 56, and a part of the outer surface 118b in which makeup water is spouted from the makeup water flow path pipe outlet 102a. A water discharge passage opening 122 through which water discharged from the makeup water flow channel pipe spout 102 a of the makeup water flow path pipe 102 can pass toward the opening 56 a of the overflow pipe 56 is formed.
The water discharge passage opening 122 of the outer surface 118b of the opening / closing member 118 is formed in a rectangular shape that is long in the vertical direction substantially in front of the make-up water channel pipe water discharge port 102a on the outer surface 118b. The adjustment member 124 of the opening / closing member 118 attached to the opening 122 can be adjusted, so that the opening state of the opening 56a of the overflow pipe 56 can be changed by the adjusting member 124 with respect to the makeup water passage pipe outlet 102a. In addition, the position of the water discharge passage opening 122 corresponding to the balance position of the float 116 can be adjusted in the vertical direction. The adjustment member 124 has a convex portion 124 a, and a plurality of concave portions 122 a that can be engaged with the convex portion 124 a are formed in the water discharge passage opening 122.
When the water discharge passage opening 122 formed on the outer surface 118b of the opening / closing member 118 is positioned on the flow line of the makeup water discharged from the makeup water flow channel pipe outlet 102a, the makeup water is supplied to the water discharge passage opening 122. Can pass into the opening 56a of the overflow pipe 56, and the opening 56a of the overflow pipe 56 is in an open state with respect to the make-up water channel pipe outlet 102a. On the other hand, when the water discharge passage opening 122 is located at a position other than on the flow line of the makeup water discharged from the makeup water passage pipe outlet 102a, the makeup water is supplied to the outer surface 118b of the opening / closing member 118. When hitting the top 118d, it flows down from the top 118d along the outer surface 118b of the opening / closing member 118 while diffusing radially, and is supplied as cleaning water into the cleaning water tank 18, and the opening 56a of the overflow pipe 56 is discharged from the supply water channel pipe. It is in the state closed with respect to the water mouth 102a.
When the height of the opening / closing member 118 is at the maximum height, the height of the opening / closing member 118 is set lower than the height of the water supply valve 34, so that the cleaning water tank 18 that is compact in the height direction is formed. The replenishing water supply device 19 according to the second embodiment of the present invention can be used with the conventional washing water tank design.

Next, the makeup water supply apparatus according to the second embodiment of the present invention, the washing water tank apparatus equipped with the makeup water supply apparatus, and the operation (action) of the flush toilet to which the washing water tank apparatus is applied will be described. To do.
First, referring to FIGS. 11 (a) to 11 (d), the washing water tank apparatus provided with the makeup water supply device according to the second embodiment of the present invention and the flush toilet to which this washing water tank apparatus is applied 2. The large cleaning mode among the types of cleaning modes will be described.

First, in the makeup water supply device 19 in a state before drainage and water supply in the large washing mode as shown in FIG. 11A, the valve body 42 of the drainage valve device 24 contacts the valve seat 50. Thus, the drain port 20 is closed, and the water level of the cleaning water in the cleaning water tank 18 is maintained at the substantially water stop level WL0 when the water is full.
The float 116 is lifted and stopped by buoyancy, the opening / closing member 118 attached along the inner circumferential surface of the float 116 is lifted, and the water discharge passage opening 122 on the outer surface 118b of the opening / closing member 118 is lifted. However, it is located in the front direction of the make-up water channel pipe water outlet 102a, and the opening 56a of the overflow pipe 56 is open to the make-up water channel pipe water outlet 102a.

  In the makeup water supply device 19 in the state after the drainage in the large washing mode is started, when the user rotates the operation lever 54 in the direction to execute the predetermined large washing mode, the wire winding device 52 is activated. Then, the operation wire 48 is wound up by the winding amount in the large cleaning mode, the main shaft member 46, the valve body holding member 44 and the valve body 42 of the drain valve device 24 are pulled up with respect to the valve seat 50, and the drain port 20 is The cleaning water in the cleaning water tank 18 is discharged to the toilet body 2 through the drainage flow path 9. Therefore, the water level in the washing water tank 18 is rapidly lowered.

In the opening / closing device 100 of the makeup water supply device 19, the float 116 interlocked with the water level is lowered, the opening / closing member 118 attached to the float 116 is lowered, and the water discharge passage opening 122 formed on the outer surface 118 b of the opening / closing member 118. Is lowered and moved downward from the front surface of the makeup water flow path pipe outlet 102a, and the opening 56a of the overflow pipe 56 is closed with respect to the makeup water flow path pipe outlet 102a.
After the valve body 42 opens the drain port 20, the water supply valve 34 of the water supply device 22 is opened, and substantially simultaneously, the cleaning water is discharged from the water supply valve outlet 38 of the water supply valve 34 into the cleaning water tank 18. At the same time, make-up water is supplied to the make-up water channel pipe 102 branched from the water supply valve 34, and the make-up water is discharged obliquely downward from the make-up water channel pipe water discharge port 102a toward the outer surface 118b of the opening / closing member 118 facing. .

Next, as shown in FIG. 11B, in the makeup water supply device 19 in the state immediately after the end of drainage in the large washing mode, the main shaft member 46 and the valve body 42 of the drainage valve device 24 are further lowered as the water level is lowered. Then, the valve body 42 comes into contact with the valve seat 50, the drain port 20 is closed, drainage in the large washing mode of the drain valve device 24 is finished, and water is discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22. The cleaning water is continuously discharged into the cleaning water tank 18, the replenishing water branched from the water supply valve 34 is supplied to the replenishing water passage tube 102, and the replenishing water is opposed to the replenishing water passage tube outlet 102a. The water is discharged obliquely downward toward the outer surface 118b (in the direction of the opening 56a of the overflow pipe 56).
The descent of the water level in the wash water tank 18 is stopped at the water stop water level WL1.
In the opening / closing device 100 of the makeup water supply device 19, the float 116 is lowered in accordance with the water level, but the lower limit position of the downward movement, that is, the position where the hook portion 118 e of the float 116 is caught on the float lower receiving portion 120. The opening / closing member 118 attached to the float 116 is stopped, the water discharge passage opening 122 formed on the outer surface 118b of the opening / closing member 118 is stopped, and the make-up water flow channel pipe outlet 102a is stopped. Located below the front, the top 118d of the outer surface 118b of the opening / closing member 118 is positioned above the water discharge direction of the makeup water flow channel pipe outlet 102a, and the opening / closing member 118 opens the opening 56a of the overflow pipe 56 to the makeup water flow channel pipe water discharge port. It is in the state closed so that it may interrupt | block with respect to 102a.

The make-up water from the make-up water channel pipe spout 102 a is discharged obliquely downward toward the opening 56 a of the overflow pipe 56, hits the top 118 d of the outer surface 118 b of the opening / closing member 118, and from the top 118 d to the lateral direction of the opening / closing member 118. Diffusing radially and flowing down along the curved arcuate outer surface 118b, flowing down, flowing down to the outside of the opening 56a of the overflow pipe 56, and stored in the cleaning water tank 18 (supply water) as cleaning water Yes.
The water level in the wash water tank 18 gradually starts to rise from the stop water level WL1 by the wash water discharged from the water supply valve spout 38 and the replenishment water discharged from the replenishment water passage pipe discharge spout 102a.

Next, as shown in FIG. 11C, in the makeup water supply device 19 in a state where the water level in the cleaning water tank 18 has risen to the reference water level WL2 with time after the drainage in the large cleaning mode is finished. The valve body 42 remains in the state in which the drain port 20 is closed, and the wash water discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22 is continuously discharged into the wash water tank 18. The make-up water branched from the water supply valve 34 is supplied to the make-up water channel tube 102, and the make-up water is discharged from the make-up water channel tube outlet 102a obliquely downward toward the opening 56a of the overflow pipe 56. Yes.
In the opening / closing device 100 of the makeup water supply device 19, when the water level in the cleaning water tank 18 rises to the water level WL2, the float 116 rises, the opening / closing member 118 attached to the float 116 rises, and the opening / closing member 118 The water discharge passage opening 122 formed on the outer surface 118b rises and is positioned in front of the make-up water channel pipe water discharge port 102a, and the opening / closing member 118 opens the opening 56a of the overflow pipe 56 to the make-up water flow channel tube water discharge port 102a. It is in a state of being.
The makeup water discharged from the makeup water passage pipe outlet 102a is discharged obliquely downward toward the opening 56a of the flow pipe 56 through the water discharge passage opening 122, flows into the opening 56a of the overflow pipe 56, and overflows. It flows into the drainage flow path 9 through the pipe 56 and is refilled in the toilet body 2 as makeup water.

Next, as shown in FIG. 11 (d), after the drainage in the large washing mode, the state immediately before the water level in the washing water tank 18 is raised to the water level WL3 close to the stop water level with time and the water supply is finished. In the replenishing water supply device 19, the valve body 42 remains in the state in which the drain port 20 is closed, and the wash water discharged from the water supply valve water discharge port 38 of the water supply valve 34 of the water supply device 22 continues. The makeup water that has been discharged into the tank 18 and branched from the water supply valve 34 is supplied to the makeup water passage pipe 102, and the makeup water is obliquely downwardly directed from the makeup water passage pipe outlet 102a toward the opening 56a of the overflow pipe 56. Water is being discharged.
In the opening / closing device 100 of the makeup water supply device 19, when the water level in the washing water tank 18 rises to the water level WL 3, the float 116 is further raised, the opening / closing member 118 attached to the float 116 is raised, and the opening / closing member 118. The water discharge passage opening 122 formed on the outer surface 118b is raised and positioned in the water discharge direction of the makeup water passage pipe water discharge port 102a, and the opening / closing member 118 opens the opening 56a of the overflow pipe 56 to the water supply passage tube water discharge port 102a. Open.

Finally, as shown in FIG. 11 (a), after the drainage in the large washing mode is finished, the makeup water supply in a state where the water level in the washing water tank 18 is raised to the stop water level WL0 with time and the water supply is finished. In the device 19, the valve body 42 remains in the state where the drain port 20 is closed, and when the water level in the washing water tank 18 rises to the stop water level WL 0, the water supply valve float 36 rises, and thereby the water supply valve 34. Is closed, the water supply valve outlet 38 is stopped, the supply of makeup water from the makeup water passage pipe 102 branched from the water supply valve 34 is stopped, the water discharge from the makeup water passage pipe outlet 102a is stopped, and the washing water The water level in the tank 18 is almost stopped at the water stop level WL0.
In the opening / closing device 100 of the makeup water supply device 19, the rising of the water level in the washing water tank 18 is stopped at the stop water level WL 0, the rising of the float 116 is stopped, and the opening / closing member 118 attached to the float 116 is raised. The water discharge passage opening 122 formed on the outer surface 118b of the opening / closing member 118 is stopped from rising, the water discharge passage opening 122 is positioned in the water discharge direction of the makeup water passage pipe water discharge port 102a, and the opening / closing member 118 is connected to the overflow pipe 56. The opening 56a is open to the make-up water channel pipe water outlet 102a. Thus, the makeup water supply device 19 returns to the state before the drainage and water supply in the large cleaning mode are started. The amount of water supplied from the water supply valve 34 is substantially constant. After the valve body 42 of the drain valve device 24 opens the drain port 20 and starts large cleaning, the drain port 20 is closed and the water level in the cleaning water tank 18 is reached. The predetermined period of the large cleaning mode until the temperature rises to the predetermined reference water level WL2 is set to be almost constant for each large cleaning.

  Next, referring to FIGS. 12A to 12D, the washing water tank apparatus provided with the makeup water supply apparatus according to the second embodiment of the present invention and the flush toilet to which the washing water tank apparatus is applied are executed. The small cleaning mode will be described.

  First, in the makeup water supply device 19 in a state before the drainage in the small cleaning mode as shown in FIG. 12A is started, in the case of the large cleaning mode shown in FIG. Since it is the same as that, the description is omitted.

  In the makeup water supply device 19 in the state after the drainage in the small cleaning mode is started, when the user rotates the operation lever 54 in the direction to execute the predetermined small cleaning mode, the wire winding device 52 is activated. Then, the operation wire 48 is wound up by the winding amount in the small cleaning mode, the main shaft member 46, the valve body holding member 44 and the valve body 42 of the drain valve device 24 are pulled up with respect to the valve seat 50, and the drain port 20 is The cleaning water in the cleaning water tank 18 is discharged to the toilet body 2 through the drainage flow path 9. Therefore, the water level in the washing water tank 18 is rapidly lowered.

In the opening / closing device 100 of the makeup water supply device 19, the float 116 interlocked with the water level is lowered, the opening / closing member 118 attached to the float 116 is lowered, and the water discharge passage opening 122 formed on the outer surface 118 b of the opening / closing member 118. Is lowered, moves substantially in the front direction of the replenishing water passage pipe water outlet 102a, and the opening 56a of the overflow pipe 56 is open to the replenishing water passage pipe water outlet 102a.
After the valve body 42 opens the drain port 20, for example, a certain period such as a certain period until the opening / closing member 118 enters a state in which the opening 56 a of the overflow pipe 56 is closed with respect to the makeup water channel pipe water outlet 102 a. After the elapse of time, the water supply valve 34 of the water supply device 22 is opened, and substantially simultaneously, the cleaning water is discharged into the cleaning water tank 18 from the water supply valve outlet 38 of the water supply valve 34 and is branched from the water supply valve 34 almost simultaneously. The makeup water is supplied to the makeup water channel pipe 102, and the makeup water is discharged obliquely downward from the makeup water channel pipe outlet 102a toward the opening 56a of the overflow pipe 56.

Next, as shown in FIG. 12B, in the makeup water supply device 19 in a state immediately after the end of drainage in the small cleaning mode, the main shaft member 46 and the valve body 42 of the drainage valve device 24 further descend as the water level decreases. Then, the valve body 42 comes into contact with the valve seat 50, the drain port 20 is closed, drainage in the small cleaning mode of the drain valve device 24 is finished, and water is discharged from the water supply valve outlet 38 of the water supply valve 34 of the water supply device 22. The wash water is continuously discharged into the wash water tank 18, the makeup water branched from the water supply valve 34 is supplied to the makeup water passage pipe 102, and the makeup water is opened from the makeup water passage pipe outlet 102 a to the overflow pipe 56. Water is discharged obliquely downward toward 56a.
The descent of the water level in the wash water tank 18 is stopped at the water stop water level WL4.
In the opening / closing device 100 of the makeup water supply device 19, the float 116 is lowered in accordance with the water level, but the lower limit position of the downward movement, that is, the position where the hook portion 118 e of the float 116 is caught on the float lower receiving portion 120. Is stopped, the lowering of the opening / closing member 118 attached to the float 116 is stopped, the water discharge passage opening 122 formed on the outer surface 118b of the opening / closing member 118 is stopped, and the replenishment water channel pipe water discharge port The top surface 118d of the outer surface 118b of the opening / closing member 118 is positioned above the water discharge direction of the replenishing water channel pipe water discharge port 102a, and the opening / closing member 118 passes through the opening 56a of the overflow pipe 56. It is in the state closed with respect to the pipe spout 102a.

The make-up water from the make-up water channel pipe spout 102 a is discharged obliquely downward toward the opening 56 a of the overflow pipe 56, hits the top 118 d of the outer surface 118 b of the opening / closing member 118, and from the top 118 d to the lateral direction of the opening / closing member 118. Diffusing radially and flowing down along the curved arcuate outer surface 118b, flowing down, flowing down to the outside of the opening 56a of the overflow pipe 56, and stored in the cleaning water tank 18 (supply water) as cleaning water Yes.
The water level in the wash water tank 18 gradually starts to rise from the stop water level WL4 due to the wash water discharged from the water supply valve spout 38 and the replenishment water discharged from the replenishment water passage pipe discharge spout 102a.

Next, as shown in FIG. 12C, in the makeup water supply device 19 in a state where the water level in the cleaning water tank 18 has risen to the reference water level WL2 with time after the drainage in the small cleaning mode is finished. The valve body 42 remains in the state where the drain port 20 is closed, the water supply of the water supply device 22 is continued, the supply water branched from the water supply valve 34 is supplied to the supply water flow pipe 102, and the supply water is supplied to the supply water flow. The water is discharged obliquely downward from the road pipe water discharge port 102a toward the opening 56a of the overflow pipe 56.
In the opening / closing device 100 of the makeup water supply device 19, when the water level in the cleaning water tank 18 rises to the reference water level WL2, the float 116 rises, the opening / closing member 118 attached to the float 116 rises, and the opening / closing member 118 The water discharge passage opening 122 formed on the outer surface 118b of the water supply pipe rises and is positioned in front of the water discharge direction of the makeup water flow path pipe water discharge port 102a. The opening / closing member 118 opens the opening 56a of the overflow pipe 56 to the water supply flow path pipe water discharge port 102a. It is in a state of opening to the other side.
The makeup water spouted from the makeup water passage pipe spout 102 a is spewed obliquely downward toward the opening 56 a of the flow pipe 56, passes through the spout passage opening 122, and flows into the opening 56 a of the overflow pipe 56. Then, it flows through the overflow pipe 56 to the drainage flow path 9 and is refilled as toilet water in the toilet body 2.

Next, as shown in FIG. 12D, after draining in the small cleaning mode, the state immediately before the water level in the cleaning water tank 18 rises to the water level WL3 close to the water stop level with time and the water supply ends. In the replenishing water supply device 19, the valve body 42 remains in the state in which the drain port 20 is closed, and the wash water discharged from the water supply valve water discharge port 38 of the water supply valve 34 of the water supply device 22 continues. The makeup water that has been discharged into the tank 18 and branched from the water supply valve 34 is supplied to the makeup water passage pipe 102, and the makeup water is obliquely downwardly directed from the makeup water passage pipe outlet 102a toward the opening 56a of the overflow pipe 56. Water is being discharged.
In the opening / closing device 100 of the makeup water supply device 19, when the water level in the washing water tank 18 rises to the water level WL3, the float 116 further rises, the opening / closing member 118 attached to the float 116 rises, and the opening / closing member 118 The water discharge passage opening 122 formed on the outer surface 118b of the water supply rises and is positioned in the water discharge direction of the makeup water flow channel pipe water discharge port 102a. The opening / closing member 118 opens the opening 56a of the overflow pipe 56 to the water supply flow channel tube water discharge port 102a. Open.

Finally, as shown in FIG. 12A, after draining in the small cleaning mode, the makeup water supply in a state where the water level in the cleaning water tank 18 is raised to the stop water level WL0 with time and the water supply is terminated. In the device 19, the valve body 42 remains in the state where the drain port 20 is closed, and when the water level in the washing water tank 18 rises to the stop water level WL 0, the water supply valve float 36 rises, and thereby the water supply valve 34. Is closed, the water supply valve outlet 38 is stopped, the supply of makeup water from the makeup water passage pipe 102 branched from the water supply valve 34 is stopped, the water discharge from the makeup water passage pipe outlet 102a is stopped, and the washing water The water level in the tank 18 is almost stopped at the water stop level WL0.
In the opening / closing device 100 of the makeup water supply device 19, the rising of the water level in the washing water tank 18 is stopped at the stop water level WL 0, the rising of the float 116 is stopped, and the opening / closing member 118 attached to the float 116 is raised. The water discharge passage opening 122 formed on the outer surface 118b of the opening / closing member 118 is stopped from rising, the water discharge passage opening 122 is positioned in the water discharge direction of the makeup water passage pipe water discharge port 102a, and the opening / closing member 118 is connected to the overflow pipe 56. The opening 56a is open to the make-up water channel pipe water outlet 102a. In this way, the makeup water supply device 19 returns to the state before the drainage and water supply in the small cleaning mode are started. The amount of water supplied from the water supply valve 34 is substantially constant, and after the valve body 42 of the drain valve device 24 opens the drain port 20 to start small cleaning, the drain port 20 is closed and the water level in the cleaning water tank 18 is reached. The predetermined period of the small cleaning mode until the temperature rises to the predetermined reference water level WL2 is set to be almost constant for each small cleaning.

Next, the operation and effect of the makeup water supply device according to the second embodiment of the present invention described above will be described.
First, the opening / closing member of the opening / closing device 100 disposed above the opening 56 a of the overflow pipe 56 with the makeup water portion 98 branched from the water supply valve 34 and fixed to be directed to the opening 56 a of the overflow pipe 56. 118, after the valve body 42 of the drain valve device 24 opens the drain port 20 and starts large cleaning or small cleaning, the drain port 20 is closed and the water level in the cleaning water tank 18 becomes the predetermined reference water level WL2. In a predetermined period until the rise, the opening 56a of the overflow pipe 56 is closed to prevent the makeup water from the makeup water passage pipe outlet 102a of the makeup water section 98 from flowing into the overflow pipe 56, and this makeup water. Is supplied into the wash water tank 18, and during a period other than the predetermined period, the opening 56a of the overflow pipe 56 is opened, and the replenishment water passage pipe outlet 60 of the replenishment water section 98 is opened. It can be stably introducing the makeup water to the overflow tube 56 from. Therefore, a fixed amount of makeup water from the makeup water section 98 can be stably refilled in the toilet body 2 in each case of the makeup water section 98, large washing and small washing.

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 4 Bowl part 9 Drain flow path 16 Washing water tank device 18 Washing water tank 18a Bottom surface 19, 96 Supply water supply device 22 Water supply device 24 Drain valve device 26 Overflow pipe portions 28, 98 Supply water portion 30 , 100 Opening and closing device (opening opening and closing means)
34 Water supply valve 56 Overflow pipe 56a Opening 60, 102 Supply water flow path pipe 60a, 102a Supply water flow path pipe spout 62, 104 Overflow pipe opening direction fixing portion 80, 116 Float 82, 118 Opening / closing member W ₀ Chain line W ₀ Reservoir surface WL0 Water level WL1 Water level WL2 Water level WL3 Water level WL4 Water level

Claims (8)

A water supply device for supplying cleaning water for cleaning the toilet bowl from the water source into the cleaning water tank, a drain valve disposed on the bottom surface of the cleaning water tank for opening and closing a drain channel, and the drain channel Wash water having an overflow pipe that communicates and extends upward from the bottom surface of the wash water tank and discharges the wash water to the toilet when the wash water in the wash water tank exceeds a full water level A makeup water supply device for supplying makeup water to a toilet that is provided in a tank device and performs large washing and small washing,
A replenishing water section that branches from the water supply device and is fixed so that a water outlet formed at the downstream end thereof is directed to the opening of the overflow pipe, and supplies cleaning water from the water outlet to the overflow pipe; ,
Opening / closing means that opens and closes the opening of the overflow pipe so as to block the flow of washing water from the water outlet of the makeup water section to the overflow pipe, the drain valve being disposed at the opening of the overflow pipe In a predetermined period from when the drainage channel is opened to start large washing or small washing until the drainage valve closes the drainage channel and the water level in the washing water tank rises to a predetermined reference water level A makeup water supply device comprising: the opening opening / closing means for closing the opening of the overflow pipe and opening the opening of the overflow pipe during a period other than the predetermined period.   The predetermined reference water level is a water level in which the water level in the washing water tank is less than a full water level, and the opening opening and closing means is linked to the float that moves up and down by the water level in the washing water tank, When the water level in the washing water tank is lower than the predetermined reference water level, the opening of the overflow pipe is closed, and the water level in the washing water tank is equal to or equal to the predetermined reference water level. The replenishing water supply device according to claim 1, further comprising: an opening / closing member that opens the opening of the overflow pipe when the water level is higher than a reference water level.   The opening opening / closing means further includes a support shaft that is provided so as to extend substantially horizontally from the overflow pipe and supports the opening / closing member, and the opening / closing member is interlocked with the vertical movement of the float. The makeup water supply device according to claim 2, which is rotatably attached to the support shaft so as to open and close the opening.   The opening / closing member has a predetermined gap between the opening and the opening / closing member so that the opening / closing member is opened over substantially the entire opening area of the overflow pipe with the opening of the overflow pipe open. The makeup water supply device according to claim 3 in which is formed.   The opening / closing member has a substantially spherical surface on the side facing the water discharge port of the makeup water portion in a state where the opening of the overflow pipe is closed, and the water discharge port of the makeup water portion is formed by the opening / closing member. The makeup water supply device according to claim 3 or 4, wherein water is discharged toward the top of the substantially spherical surface of the opening / closing member in a state where the opening of the overflow pipe is closed.   The said float is equipped with the adjustment means which can adjust the position where the buoyancy which raises the said float with the water level in the said wash water tank and the weight of the said float balance is adjusted up and down. A makeup water supply device according to claim 1.   A cleaning water tank device comprising the makeup water supply device according to any one of claims 1 to 6.   A flush toilet equipped with the flush water tank apparatus according to claim 7.

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