JP2021193257A - Washing water tank device, and flush toilet bowl device having the same - Google Patents

Abstract

To provide a washing water tank device capable of more easily making an operation of a movable body of clutch mechanism and an operation of a drain valve stable, and a flush toilet bowl device having the same.SOLUTION: A washing water tank device of the present invention comprises: a water storage tank 10 that stores washing water to be supplied to a flush toilet bowl and has a drain port for discharging the stored washing water to a flush toilet bowl; a direct-acting type drain valve 12 that opens and closes the drain port and supplies and stops washing water to the flush toilet bowl; a drain valve pulling-up part 14 for pulling up the drain valve; and clutch mechanism 30 which pulls up the drain valve via the drain valve pulling-up part by connecting the drain valve and the drain valve pulling-up part and is disconnected at a predetermined timing to lower the drain valve. The clutch mechanism 30 has a movable body 60 that can be moved to disconnect the connection between the drain valve and the drain valve pulling-up part, and the movable body 60 is provided on the drain valve 12.SELECTED DRAWING: Figure 6

Description

The present invention relates to a flush water tank device, and more particularly to a flush water tank device that supplies wash water to a flush toilet, and a flush toilet device including the same.

Conventionally, as described in Patent Document 1, a low tank device has been known. Such a low tank device is provided with a hydraulic cylinder device, and the washing water supplied into the hydraulic cylinder device is used to operate the piston of the hydraulic cylinder device, pull up the connecting portion upward, and open the drain valve. It is composed of.

Japanese Unexamined Patent Publication No. 2009-257061

However, in the low tank device described in Patent Document 1, when the supply pressure of the washing water supplied to the hydraulic cylinder device fluctuates suddenly, the drain valve pulling operation becomes unstable, and the drain valve malfunctions or scheduled cleaning. There is a possibility of poor cleaning that water cannot be supplied to the water washer.

In addition, if the pulling operation fluctuates suddenly even when the drain valve is pulled up by another method that does not depend on the water supply pressure, the drain valve pulling operation becomes unstable, and the drain valve malfunctions or the scheduled washing water is discharged. There is a possibility of poor cleaning that cannot be supplied to the flush toilet.

Therefore, the present invention is provided with a clutch mechanism capable of disconnecting the connecting portion for pulling up the drain valve, can absorb fluctuations and variations in the pulling operation for pulling up the drain valve, and can realize more stable operation of the drain valve. Since a movable body that can move in the clutch mechanism is provided in the drain valve, it is possible to suppress the influence of the movable body of the clutch mechanism due to the sudden operation of the drain valve pulling part, and the operation of the movable body of the clutch mechanism and the operation of the drain valve can be suppressed. It is an object of the present invention to provide a washing water tank device that can be easily stabilized, and a water washing toilet device equipped with the washing water tank device.

In order to solve the above-mentioned problems, one embodiment of the present invention is a washing water tank device that supplies washing water to the washing toilet, and stores the washing water to be supplied to the washing water and also stores the washing water. A water storage tank with a drainage port for draining the washed water to the water wash basin, and a direct-acting drain valve that opens and closes the drainage port to supply and stop the wash water to the water wash basin. The drain valve pulling part that pulls up the drain valve, the drain valve and the drain valve pulling part are connected, and the drain valve is pulled up by the drain valve pulling part, and the drain valve is cut at a predetermined timing to lower the drain valve. The clutch mechanism is provided with a movable body that is movable so as to disconnect the connection between the drain valve and the drain valve pulling portion, and the movable body is provided on the drain valve. It is supposed to be.
According to one embodiment of the present invention configured as described above, a clutch mechanism is provided which is disengaged at a predetermined timing to lower the drain valve, and the clutch mechanism disconnects the connection between the drain valve and the drain valve pulling portion. It is equipped with a movable body that can move so as to perform the movement, and the movable body is provided in the drain valve that is lowered by cutting. As a result, when the drain valve pulling part suddenly moves, the movable body is not provided on the drain valve pulling part side, so that the sudden movement of the drain valve pulling part affects the movable body of the clutch mechanism. This can be suppressed, and the operation of the movable body of the clutch mechanism and the operation of the drain valve can be easily stabilized.

In one embodiment of the present invention, preferably, the movable body of the clutch mechanism is configured to switch between the engaged side posture and the non-engaged side posture by a rotational operation.
According to one embodiment of the present invention configured as described above, the movable body of the clutch mechanism can switch between the engaged side posture and the non-engaged side posture by a rotational operation, so that the movable body operates. The range can be made relatively small, and the structure of the movable body can be formed more compactly than other operating mechanisms that perform sliding operations.

In one embodiment of the present invention, preferably, the movable body of the clutch mechanism has a rotation shaft which is a center of rotational operation and the drain valve pulling portion when the drain valve pulling portion tries to pull the drain valve. The contact portion is provided with a contact portion to which the portion is abutted, and the contact portion is located above the rotation axis when the portion is pulled up.
According to one embodiment of the present invention configured in this way, the contact portion is located above the rotation axis at the time of pulling up. As a result, the structure of the drain valve pulling portion and the movable body can be made more compact as compared with the case where the contact portion is located at the same height as the rotating shaft or below the rotating shaft.

In one embodiment of the present invention, preferably, when the movable body is viewed from the side of the rotation axis in the axial direction when the drain valve pulling portion pulls up the contact portion, the contact portion Is located directly above the rotation axis.
According to one embodiment of the present invention configured as described above, when the movable body is viewed from the side of the axis of rotation when the contact portion is pulled up, the contact portion is of the rotation axis. Located directly above. As a result, it is possible to prevent the contact portion from coming off from the drain valve pull-up portion when the drain valve pull-up portion is being pulled up, and at the same time, when the contact between the drain valve pull-up portion and the contact portion is cut, the movable body is moved by a relatively small rotational force. The contact can be cut by rotating it.

In one embodiment of the present invention, the center of gravity of the movable body is preferably located above the rotation axis.
According to one embodiment of the present invention configured as described above, since the center of gravity of the movable body is located above the rotation axis, the center of gravity of the movable body is displaced to one side or the other side with respect to the rotation axis. In the state, the movable body can easily hold its own posture by its own weight on the side where the center of gravity of the movable body is deviated from the axis of rotation.

In one embodiment of the present invention, preferably, the drain valve pulling section is configured by a drain valve hydraulic pressure driving section that drives the drain valve by utilizing the supply water pressure of the supplied tap water, and the drain valve hydraulic pressure is used. The drive unit is slidably arranged in a cylinder into which the wash water supplied from the water supply control device that controls the water supply from the water supply flows, and in the cylinder, and moves upward by the pressure of the wash water flowing into the cylinder. The piston is provided with a rod extending downward from the piston, and the central axis of the rod and the central axis of the drain valve are located on the same axis.
According to one embodiment of the present invention configured as described above, the central axis of the rod and the central axis of the drain valve are located on the same axis. As a result, when the rod pulls up the drain valve, the rod can pull the drain valve directly upward, and it is possible to suppress the generation of moments in the lateral or rotational direction in the drain valve. Therefore, the pulling force of the rod extending from the piston can be efficiently transmitted to the drain valve.

In one embodiment of the present invention, preferably, the contact portion between the rod and the contact portion is located inside the outer diameter of the rod in a top view.
According to one embodiment of the present invention configured as described above, the contact portion between the rod and the contact portion is located inside the outer diameter of the rod in a top view. As a result, when the rod extending from the piston pulls up the contact portion, the rod can be suppressed from tilting, the piston can be suppressed from tilting with respect to the cylinder, and the drain valve can be stably pulled up by the piston and the rod. Can be done.

In one embodiment of the present invention, preferably, when the rod pulls up the abutting portion, the abutting portion is a side view of the rod when viewed from the extending direction of the central axis of rotation of the movable body. It is located on the same axis as the central axis and the central axis of the drain valve.
According to one embodiment of the present invention configured as described above, when the rod pulls up the contact portion, the contact portion is viewed from the side view from the extending direction of the central axis of rotation of the movable body. Is located on the same axis as the central axis of the rod and the central axis of the drain valve. As a result, the rod can pull up the contact portion more stably, and the clutch mechanism and the drain valve can be formed more compactly.

Further, one embodiment of the present invention is a water-washing toilet device, which is a washing water tank device capable of easily stabilizing the operation of a movable body of a clutch mechanism and the operation of a drain valve, and a washing water tank device supplied from the washing water tank device. It has the above-mentioned water-washing toilet that is washed with water.

According to the present invention, it is possible to provide a flush water tank device capable of easily stabilizing the operation of a movable body of a clutch mechanism and the operation of a drain valve, and a flush toilet device including the same.

It is a perspective view which shows the whole flush toilet device provided with the washing water tank device by one Embodiment of this invention. It is sectional drawing which shows the schematic structure of the washing water tank apparatus by one Embodiment of this invention. It is a side view which shows the appearance that the drain valve hydraulic drive part, the clutch mechanism and the drain valve of the washing water tank apparatus according to one Embodiment of this invention are arranged in a water storage tank in a standby state. It is a front sectional view cut along the IV-IV line of FIG. It is a front-back direction sectional view cut along the VV line of FIG. It is an exploded perspective view which shows by disassembling the clutch mechanism of the washing water tank device by one Embodiment of this invention. FIG. 6 is an exploded front view of the disassembled state of the clutch mechanism of FIG. 6 as viewed from a direction orthogonal to the extending direction of the axis of the rotating shaft of the rotating body. FIG. 6 is an exploded side view showing a state in which the clutch mechanism of FIG. 6 is disassembled as viewed from the side view from the direction in which the axis of the rotating shaft of the rotating body extends. FIG. 6 is a side view showing a state in which the rotating body of the clutch mechanism of FIG. 6 is in the engaging side posture as viewed from the side view from the direction in which the axis of the rotating shaft extends. FIG. 6 is a side view showing a state in which the rotating body of the clutch mechanism of FIG. 6 is in the non-engaged side posture as viewed from the side view from the direction in which the axis of the rotating shaft extends. FIG. 6 is a side view showing a state in which the rotating body of the clutch mechanism of FIG. 6 is in a pulling posture as viewed from the side view from the direction in which the axis of the rotating shaft extends. It is a side view which shows the relationship between the rotating body and the rod in the standby state of the clutch mechanism of the washing water tank device by one Embodiment of this invention. It is sectional drawing which cut along the XIII-XIII line of FIG. It is sectional drawing which cut along the XIV-XIV line of FIG. The relationship between the rotating body and the rod in the operation from the standby state to the pulling state of the movable body of the clutch mechanism of the washing water tank device according to the embodiment of the present invention is shown along the line XIII-XIII in FIG. It is sectional drawing which shows by the same cross section as the cut cross section. The relationship between the rotating body and the rod in the operation from the standby state to the pulling state of the movable body of the clutch mechanism of the washing water tank device according to the embodiment of the present invention is shown along the line XIII-XIII in FIG. It is sectional drawing which shows by the same cross section as the cut cross section. FIG. 5 is a cross-sectional view showing a state in which a movable body is pulled up in the washing water tank device of FIG. It is sectional drawing which shows the operation at the time of disengagement of the clutch mechanism 30 in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing an operation in which one end of a base plate of a movable body comes into contact with a regulating portion and the clutch mechanism is disengaged in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing an operation in which one end of a base plate of a movable body comes into contact with a regulating portion and the clutch mechanism is disengaged in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing an operation in which the clutch mechanism is disengaged and the movable body is lowered in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing an operation in which the clutch mechanism is disengaged and the movable body is lowered in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing a state in which the movable body has completed the descending operation in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing a posture switching operation from a non-engaged side posture of a movable body to an engaged posture after the movable body has stopped descending in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing a posture switching operation from a non-engaged side posture of a movable body to an engaged posture after the movable body has stopped descending in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing a posture switching operation from a non-engaged side posture of a movable body to an engaged posture after the movable body has stopped descending in the washing water tank device of FIG. FIG. 5 is a cross-sectional view showing a posture switching operation from a non-engaged side posture of a movable body to an engaged posture after the movable body has stopped descending in the washing water tank device of FIG. In the washing water tank device of FIG. 5, as an irregular event, when the movable body takes the engaged side posture at the end of descent for some reason such as an impact, the movable body is not engaged from the engaged side posture. It is sectional drawing which shows the posture switching operation to the side posture. In the washing water tank device of FIG. 5, as an irregular event, when the movable body takes the engaged side posture at the end of descent for some reason such as an impact, the movable body is not engaged from the engaged side posture. It is sectional drawing which shows the posture switching operation to the side posture.

Next, a flush toilet device including a flush water tank device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing the entire washing water tank device provided with the washing water tank device according to the embodiment of the present invention, and FIG. 2 is a cross section showing a schematic configuration of the washing water tank device according to the embodiment of the present invention. FIG. 3 is a side view showing a state in which the drain valve hydraulic drive unit, the clutch mechanism and the drain valve of the washing water tank device according to the embodiment of the present invention are arranged in the water storage tank in a standby state. Yes, FIG. 4 is a front sectional view cut along the IV-IV line of FIG. 3, and FIG. 5 is a front-rear sectional view cut along the VV line of FIG.

As shown in FIG. 1, the flush toilet device 1 according to the embodiment of the present invention is based on the flush toilet main body 2 which is a flush toilet and the flush toilet main body 2 mounted on the rear portion of the flush toilet main body 2 according to the embodiment of the present invention. It is composed of a wash water tank device 4. The flush toilet body 2 is washed with the washing water supplied from the washing water tank device 4. After the flush toilet device 1 of the present embodiment is used, a predetermined time elapses after the remote control device 6 mounted on the wall surface is operated or the motion sensor 8 provided on the toilet seat detects the user's leaving. As a result, the bowl portion 2a of the flush toilet body 2 is configured to be washed. The washing water tank device 4 according to the present embodiment discharges the washing water stored inside to the water washing toilet main body 2 based on the instruction signal from the remote control device 6 or the motion sensor 8, and the washing water is used to discharge the washing water to the bowl portion. It is configured to wash 2a.

Further, the toilet bowl cleaning operation for cleaning the bowl portion 2a is executed by the user pressing the push button 6a of the remote controller 6. In the present embodiment, the motion sensor 8 is provided on the toilet seat, but the present invention is not limited to this embodiment, and the position where the user can detect sitting, leaving or approaching, leaving, and holding a hand. It may be provided in, for example, a flush toilet main body 2 or a flush water tank device 4. Further, the motion sensor 8 may be any as long as it can detect the user's sitting, leaving, approaching, leaving, and holding a hand. For example, an infrared sensor or a microwave sensor may be used as the motion sensor 8. Can be done. Further, the remote control device 6 may be changed to an operation lever device or an operation button device having a structure capable of mechanically controlling the opening and closing of the first control valve 16 and the second control valve 22, which will be described later.

As shown in FIG. 2, the washing water tank device 4 has a water storage tank 10 for storing wash water to be supplied to the water washing urinal main body 2, and a drain valve for opening and closing a drain port 10a provided in the water storage tank 10. A drain valve hydraulic drive unit 14 which is a drain valve pull-up unit for pulling up the drain valve 12 is provided. Further, the washing water tank device 4 includes a first control valve 16 which is a water supply control device for controlling water supply to the drain valve hydraulic drive unit 14 from the water supply, and a solenoid valve 18 attached to the first control valve 16. Has inside. Further, the washing water tank device 4 has a second control valve 22 for supplying washing water to the water storage tank 10 and a solenoid valve 24 attached to the second control valve 22 inside. Further, the washing water tank device 4 has a float device 26 which is a valve control unit and a timing control mechanism for holding the pulled-up drain valve 12 at a predetermined position. The float device 26 is a valve control unit for controlling the timing at which the drain valve 12 descends and the drain port 10a is closed. Further, the washing water tank device 4 includes a clutch mechanism 30. The clutch mechanism 30 connects the drain valve 12 and the rod 32 extending from the drain valve hydraulic drive unit 14, pulls up the drain valve 12 by the operation of the rod 32 of the drain valve hydraulic drive unit 14, and disconnects at a predetermined timing. Then, the drain valve 12 is lowered. A casing 13 is formed above the drain valve 12, and the casing 13 is formed in a cylindrical shape with an opening on the lower side. The casing 13 is connected to and fixed to the drain valve hydraulic drive unit 14.

The water storage tank 10 is a tank configured to store the washing water to be supplied to the flush toilet body 2, and a drain port 10a for discharging the stored washing water to the flush toilet body 2 is formed at the bottom thereof. Has been done. Further, in the water storage tank 10, an overflow pipe 10b is connected to the downstream side of the drainage port 10a. The overflow pipe 10b rises vertically from the vicinity of the drain port 10a and extends above the full water level WL of the washing water stored in the water storage tank 10. Therefore, the washing water flowing from the upper end of the overflow pipe 10b bypasses the drain port 10a and directly flows out to the flush toilet body 2.

The drain valve 12 is a valve body device arranged to open and close the drain port 10a, and is opened by pulling the drain valve 12 upward, and the washing water in the water storage tank 10 is discharged to the flush toilet body 2. Then, the bowl portion 2a is washed. Further, the drain valve 12 closes the drain port 10a to stop the supply of the washing water to the flush toilet body 2. The drain valve 12 is formed in a C shape with a valve body portion 12b having a circular outer shape and opening and closing the drain port 10a, a valve shaft frame body 12a extending upward from the valve body portion 12b and interlocking with the valve body portion 12b. A support portion 12d (see FIG. 6) for receiving the rotating shaft 66, a first regulating portion 12e (see FIG. 13) provided on the top of the valve shaft frame body 12a to regulate the rotational movement of the movable body, and a valve shaft frame body. A second regulating unit 12f, which is provided on the top of the 12a and regulates the rotational movement of the movable body, is provided. The drain valve 12 constitutes a direct-acting drain valve device that opens and closes the drain port 10a by moving the valve body portion 12b up and down in the vertical direction by moving the valve shaft frame body 12a up and down in the vertical direction. Further, the drain valve 12 is pulled up by the driving force of the drain valve hydraulic drive unit 14, and when it is pulled up to a predetermined height, the clutch mechanism 30 is disengaged and the drain valve 12 is lowered by its own weight. When the drain valve 12 descends, the drain valve 12 is held by the float device 26 for a predetermined time, and the time until the drain valve 12 sits on the drain port 10a is adjusted.
After the descent of the drain valve 12 is completed, the first regulating unit 12e regulates the counterclockwise rotation range of the movable body 60 when viewed from the axial direction of the rotating shaft 66, and rotates the movable body 60 within a certain range. The rotational movement of the movable body 60 is regulated in this way. The first regulation unit 12e is located at a position lower than the second regulation unit 12f.
The second regulating unit 12f regulates the clockwise rotation range of the movable body 60 when viewed from the axial direction of the rotating shaft 66 after the descent of the drain valve 12 is completed, and rotates the movable body 60 within a certain range. The rotational movement of the movable body 60 is restricted.

The drain valve hydraulic drive unit 14 is configured to use the tap water supply pressure supplied from the tap water to receive the tap water to which the feed water pressure is applied as wash water and drive the drain valve 12. Specifically, the drain valve hydraulic drive unit 14 includes a cylinder 14a into which the washing water supplied from the first control valve 16 flows, a piston 14b slidably arranged in the cylinder 14a, and a cylinder 14a. It has a rod 32 that penetrates the center of the lower end and extends downward and drives the drain valve 12.

Further, a spring 14c is arranged inside the cylinder 14a to urge the piston 14b downward. Further, a U-shaped packing 14e is attached to the piston 14b to ensure watertightness between the inner wall surface of the cylinder 14a and the piston 14b. Further, a clutch mechanism 30 is provided at the lower end of the rod 32, and the clutch mechanism 30 connects and disconnects the rod 32 and the valve shaft frame body 12a of the drain valve 12.

The cylinder 14a is a cylindrical member, and its axis is arranged in the vertical direction, and the piston 14b is slidably accepted inside. Further, a drive unit water supply passage 34a is connected to the lower end portion of the cylinder 14a so that the washing water flowing out from the first control valve 16 flows into the cylinder 14a. Therefore, the piston 14b in the cylinder 14a is pushed up against the urging force of the spring 14c by the washing water flowing into the cylinder 14a. That is, the piston 14b is moved upward by the pressure of the washing water flowing into the cylinder.

On the other hand, an outflow hole is provided in the middle of the cylinder 14a, and the drive unit drainage channel 34b communicates with the inside of the cylinder 14a through the outflow hole. Therefore, when the washing water flows into the cylinder 14a from the drive unit water supply channel 34a connected to the lower part of the cylinder 14a, the piston 14b is pushed upward from the lower part of the cylinder 14a which is the first position. Then, when the piston 14b is pushed up to a second position above the outflow hole, the water flowing into the cylinder 14a flows out from the outflow hole through the drive unit drainage channel 34b. That is, the drive unit water supply channel 34a and the drive unit drainage channel 34b communicate with each other via the inside of the cylinder 14a when the piston 14b is moved to the second position. A discharge portion 54 is formed at the tip of the drive portion drainage channel 34b extending from the cylinder 14a. In this way, the drive unit drainage channel 34b forms a flow path extending to the discharge unit 54. The discharge unit 54 causes water to flow out into the water storage tank 10. Therefore, the entire amount of the water flowing out of the cylinder 14a is stored in the water storage tank 10.

The rod 32 forms a rod-shaped member extending downward from the piston 14b. Although the rod 32 is integrally formed with the piston 14b, it may be formed by a separate body and fixed to the piston 14b. The rod 32 extends downward toward the drain valve 12. The rod 32 extends downward from the inside of the cylinder 14a through a through hole 14f formed in the center of the bottom surface of the cylinder 14a. Further, a gap 14d is provided between the rod 32 protruding from below the cylinder 14a and the inner wall of the through hole 14f of the cylinder 14a, and a part of the washing water flowing into the cylinder 14a flows out from this gap 14d. do. The water flowing out from the gap 14d flows into the water storage tank 10. Since this gap 14d is relatively narrow and has a large flow path resistance, even if water flows out from the gap 14d, the pressure inside the cylinder 14a is increased by the washing water flowing into the cylinder 14a from the drive unit water supply channel 34a. It rises and the piston 14b is pushed up against the urging force of the spring 14c. As shown in FIG. 4, the central axis 32b of the rod 32 is along the vertical line. The central axis 32b of the rod 32 and the central axis 12c of the drain valve 12 are located on substantially the same axis. The drain valve hydraulic drive unit 14 constitutes a drain valve pull-up unit that is driven by water pressure to pull up the drain valve, while the drain valve hydraulic drive unit 14 is a drain valve pull-up unit that is manually driven to pull up the drain valve. You may. Further, the drain valve hydraulic drive unit 14 may be a drain valve pull-up unit that is driven by a drive unit such as a motor to pull up the drain valve.

Next, the first control valve 16 is configured to control water supply to the drain valve hydraulic drive unit 14 and to control water supply and stop to the discharge unit 54 based on the operation of the solenoid valve 18. That is, the first control valve 16 has a main valve body 16a, a main valve opening 16b opened and closed by the main valve body 16a, a pressure chamber 16c for moving the main valve body 16a, and a pressure chamber 16c in the pressure chamber 16c. It is equipped with a pilot valve 16d for switching pressure.

The main valve body 16a is configured to open and close the main valve port 16b of the first control valve 16, and when the main valve port 16b is opened, tap water supplied from the water supply pipe 38 is used as a drain valve hydraulic drive unit. It flows into 14. The pressure chamber 16c is provided in the housing of the first control valve 16 adjacent to the main valve body 16a. A part of tap water supplied from the water supply pipe 38 flows into the pressure chamber 16c, and the internal pressure is increased. When the pressure in the pressure chamber 16c rises, the main valve body 16a is moved toward the main valve port 16b, and the main valve port 16b is closed.

The pilot valve 16d is configured to open and close a pilot valve port (not shown) provided in the pressure chamber 16c. When the pilot valve port (not shown) is opened by the pilot valve, the water in the pressure chamber 16c flows out and the internal pressure drops. When the pressure in the pressure chamber 16c decreases, the main valve body 16a is separated from the main valve opening 16b, and the first control valve 16 is opened. Further, when the pilot valve 16d is closed, the pressure in the pressure chamber 16c rises, and the first control valve 16 is closed.

The pilot valve 16d is moved by a solenoid valve 18 attached to the pilot valve 16d to open and close the pilot valve port (not shown). The solenoid valve 18 is electrically connected to the controller 40 and moves the pilot valve 16d based on the command signal from the controller 40. Specifically, the controller 40 receives signals from the remote controller 6 and the motion sensor 8, and the controller 40 sends an electric signal to the solenoid valve 18 to operate it.

Further, a vacuum breaker 36 is provided in the drive unit water supply channel 34a between the first control valve 16 and the drain valve hydraulic drive unit 14. The vacuum breaker 36 prevents backflow of water to the first control valve 16 side when the pressure on the first control valve 16 side becomes negative.

Next, the second control valve 22 is configured to control water supply and stop to the water storage tank 10 based on the operation of the solenoid valve 24. The second control valve 22 is connected to the water supply pipe 38 via the first control valve 16, but the tap water supplied from the water supply pipe 38 is always the second regardless of whether the first control valve 16 is opened or closed. It is designed to flow into the control valve 22. Further, the second control valve 22 is provided with a main valve body 22a, a pressure chamber 22b, and a pilot valve 22c, and the pilot valve 22c is opened and closed by the solenoid valve 24. When the pilot valve 22c is opened by the solenoid valve 24, the main valve body 22a of the second control valve 22 is opened, and tap water flowing from the water supply pipe 38 is supplied to the inside of the water storage tank 10 or the overflow pipe 10b. .. Further, the solenoid valve 24 is electrically connected to the controller 40 and moves the pilot valve 22c based on the command signal from the controller 40. Specifically, the controller 40 sends an electric signal to the solenoid valve 24 based on the operation of the remote controller 6, and activates the electric signal. The solenoid valve 24 may be omitted, and when the solenoid valve 24 is omitted, the pilot valve 22c is controlled by the float switch 42 as described later.

On the other hand, a float switch 42 is connected to the pilot valve 22c. The float switch 42 is configured to control the pilot valve 22c based on the water level in the water storage tank 10 and open / close the pilot valve port (not shown). That is, the float switch 42 sends a signal to the pilot valve 22c when the water level in the water storage tank 10 reaches a predetermined water level, and closes the pilot valve port (not shown). That is, the float switch 42 is configured to set the water storage water level in the water storage tank 10 to a predetermined full water level WL which is a still water level. The float switch 42 is arranged in the water storage tank 10, and is configured to stop the water supply from the first control valve 16 to the drain valve hydraulic drive unit 14 when the water level of the water storage tank 10 rises to the full water level WL. There is. The float switch 42 can be changed to a ball tap mechanism. This ball tap mechanism includes a ball tap float that moves up and down according to the water level, and a support arm that is connected to the ball tap float and acts on the pilot valve 22c. As a result, in the ball tap mechanism, when the water level of the water storage tank 10 rises to the full water level WL, the float for the ball tap rises, the support arm connected to the float for the ball tap is rotated upward, and the pilot valve 22c is mechanically Close the pilot valve port (not shown). In the ball tap mechanism, when the water level of the water storage tank 10 drops below the full water level WL, the ball tap float descends, the support arm connected to the ball tap float is rotated downward, and the pilot valve port of the pilot valve 22c is mechanically rotated. Open the valve (not shown).

Further, the water supply channel 50 extending from the second control valve 22 is provided with a water supply channel branch portion 50a. One of the water supply channels 50 branched at the water supply channel branch portion 50a is configured to allow water to flow out into the water storage tank 10, and the other is configured to allow water to flow out into the overflow pipe 10b. Therefore, a part of the washing water supplied from the second control valve 22 is discharged to the flush toilet body 2 through the overflow pipe 10b, and the rest is stored in the water storage tank 10.

Further, a vacuum breaker 44 is provided in the water supply channel 50. The vacuum breaker 44 prevents backflow of water to the second control valve 22 side when the pressure on the second control valve 22 side becomes negative.

Further, the water supplied from the tap water is passed through a water stop valve 38a arranged on the outside of the water storage tank 10 and a constant flow valve 38b arranged in the water storage tank 10 on the downstream side of the water stop valve 38a. It is supplied to the first control valve 16 and the second control valve 22, respectively. The water stop valve 38a is provided to stop the supply of water to the washing water tank device 4 at the time of maintenance or the like, and is usually used in an opened state. The constant flow rate valve 38b is provided to allow water supplied from the water supply to flow into the first control valve 16 and the second control valve 22 at a predetermined flow rate, and has a constant flow rate regardless of the installation environment of the flush toilet device 1. It is configured to be supplied with water.

The controller 40 has a built-in CPU, memory, and the like, and controls a connected device to execute a large cleaning mode and a small cleaning mode, which will be described later, based on a predetermined control program recorded in the memory and the like. The controller 40 is electrically connected to the remote controller 6, the motion sensor 8, the solenoid valve 18, the solenoid valve 24, and the like.

Next, the float device 26 will be described. The float device 26 is provided in the vicinity of the drain valve 12. In the float device 26, after the valve shaft frame body 12a is lifted by a predetermined distance and the valve shaft frame body 12a is disconnected by the clutch mechanism 30, the valve shaft frame body 12a of the drain valve 12 descends to close the drain port 10a. It is configured to delay the valve. Specifically, the float device 26 has a float portion 26a and an engaging portion 26b interlocked with the float portion 26a. On the other hand, a holding claw 12g formed so as to be engaged with the engaging portion 26b is formed at the base end portion of the valve shaft frame body 12a of the drain valve 12.

The engaging portion 26b engages with the holding claw 12g of the valve shaft frame body 12a that has been separated and lowered by the clutch mechanism 30, and the valve shaft frame body 12a and the drain valve 12 descend and sit on the drain port 10a. It is configured to prevent. Next, the float portion 26a descends as the water level in the water storage tank 10 drops, and when the water level in the water storage tank 10 drops to a predetermined water level, the float portion 26a rotates the engaging portion 26b and holds the engaging portion 26b. The engagement of the claw 12g is released. When the engagement is released, the valve shaft frame body 12a and the drain valve 12 descend and sit on the drain port 10a. As a result, the closing of the drain valve 12 is delayed, and an appropriate amount of washing water is discharged from the drain port 10a.

Next, the configuration and operation of the clutch mechanism 30 will be described with reference to FIGS. 3 to 12.
First, as shown in FIG. 4, the clutch mechanism 30 is provided at the lower end of the rod 32 extending downward from the drain valve hydraulic drive unit 14, and has the lower end of the rod 32 and the upper end of the valve shaft frame body 12a of the drain valve 12. It is configured to connect / disconnect.
As shown in FIG. 6, the clutch mechanism 30 includes a movable body 60 that moves so as to disconnect the drain valve 12 and the drain valve hydraulic drive unit 14, a thin portion 33 of the rod 32, and a pull of the rod 32. It includes an upper portion 35 and a regulating portion 37 (see FIG. 5) that hangs downward from the bottom surface of the cylinder 14a on the outside of the rod 32. With such a structure, the clutch mechanism 30 realizes a gravity-type clutch mechanism that adjusts the posture of the movable body by gravity, instead of a spring-type clutch mechanism having a spring. Since the clutch mechanism 30 can omit the structure of the spring, it is possible to reduce the manufacturing cost and the assembly man-hours of the clutch mechanism.

The movable body 60 is provided on the valve shaft frame body 12a of the drain valve 12. The movable body 60 is rotatably attached to the support portion 12d of the valve shaft frame body 12a. The movable body 60 forms a movable mechanism that operates on the drain valve side in a state of being attached to the support portion 12d. The movable body 60 is a rotating body configured to switch between an engaged side posture and a non-engaging side posture, which will be described later, by a rotational operation.

The movable body 60 includes a base plate 62 extending laterally, an arm 64 that rises vertically from both sides of the base plate, a rotating shaft 66 that is the center of the rotational movement of the movable body 60, and a rod of the drain valve hydraulic drive unit 14. It includes a contact portion 68 to which the rod 32 of the drain valve hydraulic drive unit 14 comes into contact when the 32 tries to pull up the drain valve 12.

The base plate 62 extends laterally in a plate shape. When viewed from the side of the axis of the rotating shaft 66 from the extending direction, the side of the base plate 62 where the contact portion 68 of the engaging side posture with respect to the rotating shaft 66 is located is designated as the engaging side portion 62e (see FIG. 9). The side where the contact portion 68 in the non-engagement side posture is located with respect to the rotating shaft 66 is referred to as the non-engagement side portion 62f (see FIG. 10).
The arm 64 is arranged on the outside of the rod 32 and extends upward from the outside of the base plate 62 in a top view.

The rotation shaft 66 is provided near the center of the base plate 62, and is provided so as to cross the base plate 62. The rotating shaft 66 is formed integrally with the base plate 62 at the portion where the rotating shaft 66 is arranged. That is, the rotating shaft 66 is formed so as to project on both the left and right sides of the base plate 62. The rotation shaft 66 extends in the horizontal direction and rotatably supports the movable body 60. The movable body 60 is formed by a structure in which a rotating shaft 66 is provided on the base plate 62 and an arm 64 extends above the base plate 62. Therefore, the center of gravity of the movable body 60 is located above the rotation shaft 66. For example, as shown in FIGS. 9 to 11, the center of gravity H of the movable body 60 is located at the position of the contact portion 68.

The contact portion 68 is located above the rotation shaft 66. The contact portion 68 is formed so as to project inward at the upper part of the arm 64. The contact portion 68 is formed in a teardrop shape when viewed from a direction parallel to the rotation axis 66 (when viewed from the side view from the direction in which the axis of the rotation axis 66 extends). The lower surface of the contact portion 68 is formed into an arcuate curved surface when viewed from a direction parallel to the rotation axis 66. The contact portion 68 is provided with an inclined inclined surface 70 on the top side, and the normal line D (see FIG. 28) of the inclined surface 70 is a vertical straight line passing through the rotation shaft 66 when the movable body 60 is in the engaging side posture. It extends toward the region on the side where the contact portion 68 in the non-engaging side posture is located with respect to C. When the rod 32 pulls up the contact portion 68, the contact portion 68 is the center axis 32b (see FIG. 4) of the rod 32 and the drain valve when viewed from the side view from the extending direction of the rotation center axis of the movable body 60. It is located on the same axis as the central axis 12c (see FIG. 4) of 12. In the present embodiment, the rotating shaft 66 is also located on the same axis as the central axis 12c, but the rotating shaft 66 does not have to be arranged on the same axis as the central axis 12c.

Next, with reference to FIGS. 9 to 11, the engaged side posture, the non-engaged side posture, and the pulling posture taken by the movable body 60 will be described.
The movable body 60 is configured to be rotatable about the rotation shaft 66, and the movable body 60 can take an engaged side posture, a non-engaged side posture, and a pulling posture based on the structure as described above. It is configured to be able to.
In FIGS. 9 to 11, in order to explain the possible postures of the movable body 60, the base plate 62, the contact portion 68, and the rotating shaft 66 of the movable body 60 are viewed from the side view from the direction in which the axis of the rotating shaft extends. The relationship is shown.
The engaging side posture of the movable body 60 is a posture when the contact portion 68 is positioned at a position where it is in contact with the rod 32 at the time of pulling up and stands by. The non-engagement side posture of the movable body 60 is a posture in which the contact portion 68 does not come into contact with the rod 32 when descending and pulling up. The pulling posture of the movable body 60 is a posture in which the contact portion 68 is in contact with the rod 32 at the time of pulling and is pulled up. In the non-engagement side posture of the movable body 60, the center of gravity H of the movable body 60 is positioned on one side (the non-engagement posture side, the left side of the paper in FIG. 10) with respect to the vertical line C passing through the rotation axis 66. Will be done. In the engaged side posture switched from the non-engaged side posture, the center of gravity H of the movable body 60 is on the other side (engaged posture side and the right side of the paper in FIG. 9) opposite to one side with respect to the vertical line C. ).

As shown in FIGS. 12 to 14, the rod 32 includes a thin-walled portion 33 in which the outer shape of the rod 32 is formed thinner than the upper portion on the tip end side thereof, and a pulling upper portion 35 whose diameter is expanded again at the lower end of the thin-walled portion 33. Is formed.
The thin-walled portion 33 is formed by scraping the side surface portions of the rod 32 from a constant height of the rod 32 to another constant height inward from both side surfaces. The side surface is cut into a square shape when viewed from the side. Therefore, as shown in FIG. 13, in a state where the rod 32 and the contact portion 68 are not in contact with each other, the contact portion 68 extends inward from the outer diameter of the rod 32 as shown in FIG. 13 when viewed from above. be able to. Further, in the top view, the contact portion between the rod 32 and the contact portion 68 is located inside the outer diameter of the rod 32.

The pulling portion 35 forms an upward flat flat surface. The upper surface of the pulling portion 35 extends substantially horizontally. When the contact portion 68 is present at a position corresponding to the thin wall portion 33 (in the standby state), the pull upper portion 35 is between the contact portion 68 and the pull upper portion 35 located below the contact portion 68. A gap is formed in.

Next, a series of cleaning operations of the washing water tank device 4 according to the embodiment of the present invention and the flush toilet device 1 provided with the washing water tank device 4 will be described with reference to FIGS. 2, 3 and the like.
First, in the standby state for cleaning the toilet bowl shown in FIG. 2, the water level in the water storage tank 10 is at a predetermined full water level WL, and in this state, both the first control valve 16 and the second control valve 22 are closed. ing. Further, the float device 26 is in a standby state. Next, when the user presses the cleaning button of the remote controller 6 (FIG. 1), the remote controller 6 transmits an instruction signal for cleaning the toilet bowl to the controller 40 (FIG. 2). In the water-washing toilet device 1 of the present embodiment, when a predetermined time elapses without pressing the washing button of the remote control device 6 after the user's leaving is detected by the motion sensor 8 (FIG. 1). Also, an instruction signal for cleaning the toilet bowl is transmitted to the controller 40.

Upon receiving the instruction signal for cleaning the toilet bowl, the controller 40 operates the solenoid valve 18 (FIG. 2) provided in the first control valve 16 to separate the pilot valve 16d on the solenoid valve side from the pilot valve opening. .. As a result, the pressure in the pressure chamber 16c is reduced, the main valve body 16a is separated from the main valve opening 16b, and the main valve opening 16b is opened. When the first control valve 16 is opened, the washing water flowing from the water supply pipe 38 is supplied to the drain valve hydraulic pressure drive unit 14 via the first control valve 16. As a result, the piston 14b of the drain valve hydraulic drive unit 14 is pushed up, the drain valve 12 is pulled up via the rod 32, and the washing water in the water storage tank 10 is discharged from the drain port 10a to the flush toilet body 2.

When the drain valve 12 is pulled up, the holding claw 12g provided on the valve shaft frame body 12a of the drain valve 12 pushes up and rotates the engaging portion 26b of the float device 26, and the holding claw 12g exceeds the engaging portion 26b. And rise.
Next, when the drain valve 12 is further pulled up, the clutch mechanism 30 is disengaged. That is, when the drain valve 12 reaches a predetermined height, the base plate 62 of the clutch mechanism 30 hits the regulating portion 37, and the clutch mechanism 30 is disengaged (see FIG. 17 and the like).

When the clutch mechanism 30 is disengaged, the drain valve 12 begins to descend toward the drain port 10a due to its own weight. The holding claw 12g of the drainage valve 12 that has descended engages with the engaging portion 26b of the float device 26, and the drainage valve 12 is held at a predetermined height by the engaging portion 26b. By holding the drain valve 12 by the engaging portion 26b, the drain port 10a is maintained in the valve open state, and the flush water in the water storage tank 10 is maintained to be discharged to the flush toilet body 2. At this time, the pilot valve 16d is still in the open state, and the washing water flowing from the water supply pipe 38 is supplied to the drain valve hydraulic drive unit 14 via the first control valve 16. The piston 14b is raised to the second position, and the drive unit water supply channel 34a and the drive unit drainage channel 34b are communicated with each other via the inside of the cylinder 14a, so that the washing water is discharged from the discharge unit 54 into the water storage tank 10. Will be done.

Next, when the water level in the water storage tank 10 drops, the float switch 42 that detects the water level in the water storage tank 10 is turned off. When the float switch 42 is turned off, the pilot valve 22c provided in the second control valve 22 is opened. Therefore, the washing water is supplied from the second control valve 22 to the water storage tank 10 via the water supply channel 50. When the large cleaning mode is selected, the controller 40 closes the solenoid valve 18 and closes the pilot valve 16d on the solenoid valve side when a predetermined time has elapsed from the opening of the solenoid valve 18. The main valve body 16a of the first control valve 16 is closed when the pilot valve 16d is closed. Even after the pilot valve 16d on the solenoid valve side is closed, the valve open state of the second control valve 22 is maintained, and water supply to the water storage tank 10 is continued. Since the first control valve 16 is closed, the supply of the washing water to the drain valve hydraulic drive unit 14 and the discharge unit 54 is stopped.

Further, when the water level in the water storage tank 10 drops to the predetermined water level WL1, the float portion 26a of the float device 26 descends, which moves the engaging portion 26b. As a result, the engagement between the valve shaft frame body 12a and the engaging portion 26b is released, and the valve shaft frame body 12a and the drain valve 12 begin to descend again.

As a result, the drain valve 12 is seated on the drain port 10a, and the drain port 10a is closed. On the other hand, since the float switch 42 is still in the off state, the valve open state of the second control valve 22 is maintained, and water supply to the water storage tank 10 is continued. The wash water supplied through the water supply channel 50 reaches the water supply channel branch portion 50a, a part of the wash water branched at the water supply channel branch portion 50a flows into the overflow pipe 10b, and the rest enters the water storage tank 10. It is stored. The wash water that has flowed into the overflow pipe 10b flows into the flush toilet body 2 and is used for refilling the bowl portion 2a. With the drain valve 12 closed, the washing water flows into the water storage tank 10, so that the water level in the water storage tank 10 rises.

When the water level in the water storage tank 10 rises to a predetermined full water level WL, the float switch 42 is turned on. When the float switch 42 is turned on, the pilot valve 22c on the float switch side is closed. As a result, the pilot valve 22c is closed, so that the pressure in the pressure chamber 22b rises, the main valve body 22a of the second control valve 22 is closed, and the water supply is stopped.

After the first control valve 16 is closed and the water supply to the drain valve hydraulic drive unit 14 is stopped, the washing water in the cylinder 14a of the drain valve hydraulic drive unit 14 gradually flows out from the gap 14d and the piston 14b. Is pushed down by the urging force of the spring 14c, and the rod 32 is lowered at the same time. As a result, the tip portion 32a of the rod 32 comes into contact with the base plate 62, the movable body 60 is sandwiched between the valve shaft frame body 12a and the rod 32 and stopped, and is in a standby state before the toilet bowl cleaning is started. Return to.

Next, the operation of the clutch mechanism 30 in the series of cleaning operations of the flush toilet device 1 will be described in more detail with reference to FIGS. 5, 12 to 29.
First, the clutch mechanism 30 in the standby state will be described with reference to FIGS. 5 and 12 to 14. The drain valve 12 is seated at the drain port 10a, and the drain port 10a is closed. The drain valve 12 is in the most lowered and stopped state. The movable body 60 of the clutch mechanism 30 is sandwiched between the valve shaft frame body 12a of the drain valve 12 and the rod 32 of the drain valve hydraulic drive unit 14 and stopped. The piston 14b of the drain valve hydraulic drive unit 14 is in the most lowered position, and the rod 32 of the drain valve hydraulic drive unit 14 is also in the most lowered position.

The positional relationship between the movable body 60 of the clutch mechanism 30 in the standby state, the valve shaft frame body 12a of the drain valve 12, and the rod 32 of the drain valve hydraulic drive unit 14 will be described with a larger view.
As shown in FIG. 14, in the cross section of the central portion of the rod 32, the tip end portion (lower end portion) 32a of the rod 32 abuts on the abutting portion side portion 62a of the base plate 62 of the movable body 60 and faces downward. Pressing. The tip portion 32a forms a curved surface protruding downward when viewed from the side view from the direction in which the axis of the rotating shaft 66 extends. Further, the lower portion 62b of the contact portion side portion 62a of the base plate 62 is in contact with the valve shaft frame body 12a. Therefore, the movable body 60 is sandwiched between the valve shaft frame body 12a and the rod 32 and stopped.
At this time, as shown in FIG. 13, in the cross section at a position deviated from the central portion of the rod 32, the contact portion 68 is located at a position corresponding to the thin wall portion 33, and the contact portion 68 and the contact portion A gap is formed between the rod and the pulling portion 35 located below 68. As will be described later, after the movable body 60 is switched to the engaging side posture after the drain valve 12 has finished descending, it is in a standby state as shown above, and the contact portion 68 corresponds to the thin-walled portion 33. A gap is formed between the contact portion 68 located at the position and the pulling upper portion 35 located below the contact portion 68.

Next, with reference to FIGS. 13, 15 to 17, when the piston 14b of the drain valve hydraulic drive unit 14 starts to rise and the movable body 60 is pulled up from the engaged side posture in the standby state. The operation until the posture is reached will be explained.
When the washing water is supplied to the drain valve hydraulic drive unit 14, the piston 14b moves upward and the rod 32 starts to rise. At this time, the rod 32 starts to rise little by little from the standby state as shown in FIG. Since a gap B is formed between the abutting portion 68 and the pulling upper portion 35 located below the abutting portion 68, the pulling upper portion 35 immediately after the start of ascending of the rod 32 is the lower surface of the abutting portion 68. After the pulling force due to water supply is relatively strong and stable, the contact portion side portion 62a of the pulling upper portion 35 can pull up the contact portion 68 relatively stably.
As shown in FIG. 15, the rod 32 rises and the pulling upper portion 35 comes into contact with the contact portion 68. At this time, the contact portion 68 is located at a position slightly closer to the center of gravity on the engaging side posture side than directly above the rotating shaft 66 (on the vertical straight line C). At this time, since the lower surface of the contact portion 68 is formed on an arcuate curved surface (for example, a semicircular cross section), it is rotated in accordance with the ascending rise of the rod 32, and the rotating shaft 66 as shown in FIG. The position is corrected while rolling to the position directly above.
As shown in FIG. 16, the movable body 60 is in a pulling posture. After that, when the rod 32 rises, the pulling upper portion 35 comes into contact with the contact portion 68 directly above the rotating shaft 66 and pulls up the movable body 60. At this time, the center of gravity H of the movable body 60 is located directly above the rotating shaft 66 when viewed from the side view from the direction in which the axis of the rotating shaft 66 extends. As a result, with respect to the ascent of the rod 32, the movable body 60 does not generate a moment in another direction or a moment of twisting force due to the deviation of the center of gravity while the central axis of the rod 32 and the center of gravity of the movable body 60 are aligned with each other. It is pulled up in the vertical direction. Further, since the central axis of the rod 32 and the axis of the drain valve 12 coincide with each other, the drain valve 12 is also pulled upward in the vertical direction without generating a moment in another direction. Therefore, as shown in FIG. 16, the drain valve 12 is pulled up by the rod 32 in a stable posture.

As shown in FIGS. 16 and 16, in the pulling state in which the movable body 60 is pulled up, the pulling upper portion 35 is in contact with the contact portion 68 directly above the rotating shaft 66. The base plate 62 of the movable body 60 extends substantially horizontally. As shown in FIG. 17, the drain valve 12 is pulled up together with the movable body 60.

Next, the operation of the clutch mechanism 30 at the time of disengagement will be described with reference to FIGS. 18 to 21. In FIGS. 19 and 20, for easy understanding, the position of the center of gravity H is illustrated by a cross, and the locus of the rotatable range of the contact portion 68 is virtually illustrated by the dotted line A.
As shown in FIGS. 18 and 19, when the drain valve hydraulic drive unit 14 is further supplied with washing water and the drain valve 12 is pulled up to a predetermined position, one end of the base plate 62 of the movable body 60 comes into contact with the regulation unit 37. , The clutch mechanism 30 is disengaged.

As shown in FIG. 19, the movable body 60 is pulled up by the rod 32 in a state where the contact portion 68 is located on the pulling upper portion 35 and directly above the rotating shaft 66. At this time, the base plate 62 extends substantially horizontally. The center of gravity H of the movable body 60 is located at the position of the contact portion 68, for example, as indicated by a cross. When the non-engagement side posture end portion 62c of the base plate 62 abuts on the regulation portion 37, as shown in FIG. 20, the non-engagement side posture end portion 62c of the base plate 62 is prevented from rising, and the movable body 60 rotates on the rotating shaft. It is rotated around 66. Therefore, the contact portion 68 is moved toward the non-engaged posture side so as to be disengaged from the pulling upper portion 35. At this time, the center of gravity H of the movable body 60 is moved toward the non-engaged posture side, as shown by, for example, a cross. In this way, the center of gravity H of the movable body 60 is moved from the vertical straight line C of the rotating shaft 66 to one side, and the movable body 60 is easily stabilized in the non-engaged side posture as shown in FIGS. 20 and 21. In the non-engagement side posture, the contact portion 68 of the movable body 60 is on the rotation shaft 66 in a state where the center of gravity H of the movable body 60 is slightly closer to the non-engagement side posture end portion 62c side than directly above the rotation shaft 66. It is a posture located on the side away from (away from) the pulling upper portion 35 from directly above.

As shown in FIG. 21, when the contact portion 68 is moved until it comes off from the pulling upper portion 35, the contact portion 68 and the movable body 60 start descending by free fall. In this way, the clutch mechanism 30 is disengaged.

Next, with reference to FIGS. 21 to 23, the lowering operation of the movable body 60 after the clutch mechanism 30 is disengaged will be described.
As shown in FIG. 21, after the clutch mechanism 30 is disengaged, the movable body 60 takes a non-engagement posture as a result of the center of gravity H of the movable body 60 being slightly closer to the non-engagement side posture side than directly above the rotation shaft 66. It descends in the state of being taken. Since the center of gravity H of the movable body 60 has moved to the non-engagement posture side, the non-engagement side posture of the movable body 60 is stable.
As shown in FIGS. 21 and 22, the movable body 60 descends while maintaining the non-engaged side posture when the rod 32 and the contact portion 68 are disengaged from contact with each other and descend. The movable body 60 maintains the non-engagement side posture during descent from the descent start time point to the descent end time point (time point when the valve body portion 12b closes the drain port 10a). As described above, the lowered drain valve 12 is temporarily held at a predetermined height by the float device 26 or the like before being seated on the drain port 10a, but the movable body 60 is not engaged during this period as well. Maintains a lateral posture.

As shown in FIG. 23, the movable body 60 maintains the non-engaged side posture even at the end of descent. The center of gravity H of the movable body 60 is displaced with respect to the rotation axis 66 to the side where the non-engaged side posture is to be maintained, and it is difficult for the movable body 60 to change the posture, but rather the non-engaged side posture is maintained. It's easy.

Next, with reference to FIGS. 24 to 27, a posture switching operation from the non-engaged side posture to the engaged side posture of the movable body 60 after the movable body 60 has stopped descending will be described. In FIGS. 24 to 27, in order to explain in an easy-to-understand manner, the position of the center of gravity H is illustrated by a cross, and the locus of the rotatable range of the contact portion 68 is virtually illustrated by a dotted line A.
As shown in FIG. 24, the movable body 60 maintains the non-engaged side posture even after the descent is completed. The lower portion 62d on the non-engagement side posture end portion 62c side of the base plate 62 is in contact with the first regulating portion 12e and is stopped.

As shown in FIG. 24, when the washing water supplied to the drain valve hydraulic drive unit 14 is stopped, the rod 32 is lowered by the urging force of the spring 14c. Therefore, the rod 32 descends with respect to the movable body 60. The movable body 60 takes a non-engagement side posture, and the contact portion 68 is located at a position shifted to the non-engagement side posture side from directly below the tip portion 32a and the pulling upper portion 35.
As shown in FIG. 25, the tip portion 32a and the pulling upper portion 35 of the rod 32 are lowered to the lower side from the abutting portion 68 without abuting on the abutting portion 68. When the tip portion 32a of the rod 32 abuts on the contact portion side portion 62a on the engaging posture side of the base plate 62, the base plate 62 is rotated clockwise around the rotation shaft 66. In the movable body 60, the rod 32 descending toward the drain valve 12 comes into contact with the portion of the movable body 60 on the contact portion side portion 62a side of the rotation shaft 66, so that the movable body 60 is on the non-engaging side. It is configured to switch from the posture to the engaging side posture by a rotational movement. At this time, the center of gravity H of the movable body 60 is moved from the non-engaged posture side toward the upper side of the rotation shaft 66 in the vertical direction. Further, as shown in FIGS. 25 to 27, as the tip portion 32a of the rod 32 presses the contact portion side portion 62a, the center of gravity H of the movable body 60 moves from above the vertical direction of the rotating shaft 66 to the engaging side posture side. Moved towards. In this way, the movable body 60 has a non-engagement side posture due to the rod 32 descending toward the drain valve 12 coming into contact with a portion of the movable body 60 other than the abutting portion 68 after the descent of the drain valve 12 is completed. Can be switched to the engagement side posture.

As shown in FIG. 27, the lower portion 62b of the contact portion side portion 62a of the base plate 62 abuts on the second restricting portion 12f of the valve shaft frame body 12a, and the rotation of the base plate 62 is stopped. The tip portion 32a of the rod 32 is in contact with the base plate 62. The movable body 60 is sandwiched between the valve shaft frame body 12a and the rod 32 and stopped. At this time, after the movable body 60 is switched to the engaging side posture after the lowering of the drain valve 12 is completed, it is between the contact portion 68 and the pulling upper portion 35 of the rod 32 located below the contact portion 68. A gap B is formed. In this way, the movable body 60 returns to the standby state before the start of cleaning.

Next, with reference to FIGS. 28 and 29, as an irregular event, the movable body 60 and the rod 32 when the movable body 60 takes an engaging side posture at the end of descent for some reason such as an impact. The descending operation of is described.
In the lowering motion of the movable body 60 as shown in FIGS. 22 and 23, as shown in FIG. 28, there is a possibility that the movable body 60 takes an engaging side posture at the end of the lowering for some reason such as an impact. be. At this time, the lower portion 62b of the base plate 62 comes into contact with the second regulating portion 12f, and the rotation of the movable body 60 is stopped. The contact portion 68 is located at a position slightly offset from the vertical straight line C passing through the rotation shaft 66 toward the engagement side posture side.
As shown in FIG. 28, when the washing water supplied to the drain valve hydraulic drive unit 14 is stopped and the tip portion 32a of the rod 32 descends downward, the tip portion 32a of the rod 32 comes into contact with the contact portion 68. It abuts on the upward inclined surface 70. Since the normal line D of the inclined surface 70 extends toward the region on the non-engaging side posture side with respect to the vertical straight line C passing through the rotation axis 66, the inclined surface 70 of the contact portion 68 is in the direction of the arrow E (the direction of the arrow E. It receives a force that is rotated in the direction in which the normal D extends). Therefore, even when the movable body 60 is in the engaging side posture, when the rod 32 descends toward the drain valve 12, the rod 32 comes into contact with the inclined surface 70 of the contact portion 68 and is movable. Rotation of the body 60 to the non-engaged side posture occurs, and the movable body 60 is switched from the engaged side posture to the non-engaged side posture. Therefore, as shown in FIG. 29, the movable body 60 can be guided from the engaged side posture to the non-engaged side posture. After that, when the rod 32 is further lowered, the movable body 60 is switched from the non-engaged side posture to the engaged side posture by the same operation as that shown in FIGS. 24 to 27, and is put into a standby state.

According to the washing water tank device 4 according to the embodiment of the present invention described above, the clutch mechanism 30 is provided with a clutch mechanism 30 for lowering the drain valve 12 by being disconnected at a predetermined timing, and the clutch mechanism 30 is driven by the drain valve 12 and the drain valve hydraulic pressure. A movable body 60 that is movable so as to break the connection with the portion 14 is provided, and the movable body 60 is provided in the drain valve 12 that is lowered by cutting. As a result, when the drain valve hydraulic drive unit 14 makes a sudden operation, since the movable body 60 is not provided on the drain valve hydraulic drive unit 14 side, the clutch mechanism is caused by the sudden operation of the drain valve hydraulic drive unit 14. The influence of the movable body 60 of the 30 can be suppressed, and the operation of the movable body 60 of the clutch mechanism 30 and the operation of the drain valve 12 can be easily stabilized.

Further, according to the washing water tank device 4 according to the embodiment of the present invention, the movable body 60 of the clutch mechanism 30 can switch between the engaged side posture and the non-engaged side posture by the rotational operation, so that the movable body 60 can be switched. The operating range of the 60 can be made relatively small, and the structure of the movable body 60 can be formed more compactly than other operating mechanisms that perform a sliding operation.

Further, according to the washing water tank device 4 according to the embodiment of the present invention, the contact portion 68 is located above the rotating shaft 66 at the time of pulling up. As a result, the structure of the drain valve hydraulic drive unit 14 and the movable body 60 can be made more compact than in the case where the contact portion 68 is located at the same height as the rotary shaft 66 or below the rotary shaft 66.

Further, according to the washing water tank device 4 according to the embodiment of the present invention, when the movable body 60 is viewed from the side of the rotating shaft 66 in the axial direction when the contact portion 68 is pulled up, the contact portion 68 is located directly above the rotation shaft 66. As a result, it is possible to prevent the contact portion 68 from coming off from the drain valve hydraulic drive unit 14 when it is being pulled up, and it is relatively small when the contact between the drain valve hydraulic drive unit 14 and the contact portion 68 is cut. The movable body 60 can be rotated by the rotational force to cut the contact.

Further, according to the washing water tank device 4 according to the embodiment of the present invention, the center of gravity H of the movable body 60 is located above the rotating shaft 66, so that the center of gravity H of the movable body 60 is relative to the rotating shaft 66. In the state of being displaced to one side or the other side, the movable body 60 can easily hold its own posture by its own weight on the side where the center of gravity H of the movable body 60 is displaced with respect to the rotation axis 66.

Further, according to the washing water tank device 4 according to the embodiment of the present invention, the central axis of the rod 32 and the central axis of the drain valve 12 are located on the same axis. As a result, when the rod 32 pulls up the drain valve 12, the rod 32 can pull the drain valve 12 straight up, and it is possible to suppress the generation of moments in the lateral or rotational direction in the drain valve 12. Therefore, the pulling force of the rod 32 extending from the piston can be efficiently transmitted to the drain valve 12.

Further, according to the washing water tank device 4 according to the embodiment of the present invention, the contact portion between the rod 32 and the contact portion 68 is located inside the outer diameter of the rod 32 in the top view. As a result, when the rod 32 extending from the piston 14b pulls up the contact portion 68, the rod 32 can be suppressed from tilting, the piston 14b can be suppressed from tilting with respect to the cylinder, and the drain valve 12 by the piston 14b and the rod 32 can be suppressed. Can be stably raised.

Further, according to the washing water tank device 4 according to the embodiment of the present invention, when the rod 32 pulls up the contact portion 68, the side view seen from the extending direction of the central axis of rotation of the movable body 60 is the same. The contact portion 68 is located on the same axis as the central axis of the rod 32 and the central axis of the drain valve 12. As a result, the rod 32 can pull up the contact portion 68 more stably, and the clutch mechanism 30 and the drain valve 12 can be formed more compactly.

Further, one embodiment of the present invention is a flush toilet device 1, capable of supplying flush toilet body 2 and washing water to the flush toilet body 2, and operating the movable body 60 of the clutch mechanism 30. It is characterized by having a washing water tank device 4 capable of easily stabilizing the operation of the drain valve 12.

1 Flush toilet device 2 Flush toilet body 4 Wash water tank device 10 Water storage tank 10a Drain port 12 Drain valve 12c Central axis 14 Drain valve hydraulic drive 14a Cylinder 14b Piston 30 Clutch mechanism 32 Rod 32b Central axis 60 Movable body 66 Rotating shaft 68 Contact part 70 Inclined surface H Center of gravity

Claims (9)

A washing water tank device that supplies washing water to a flush toilet.
A water storage tank in which the washing water to be supplied to the flush toilet is stored and a drain port for discharging the stored washing water to the flush toilet is formed.
A direct-acting drain valve that opens and closes the drain port to supply and stop flush water to the flush toilet,
The drain valve pulling part that pulls up the drain valve and the drain valve pulling part
It is equipped with a clutch mechanism that connects the drain valve and the drain valve pull-up portion, pulls up the drain valve by the drain valve pull-up portion, and is cut at a predetermined timing to lower the drain valve.
The clutch mechanism is provided with a movable body that is movable so as to break the connection between the drain valve and the drain valve pulling portion, and the movable body is provided in the drain valve. The washing water tank device according to claim 1, wherein the movable body of the clutch mechanism is configured to switch between an engaged side posture and a non-engaging side posture by a rotational operation. The movable body of the clutch mechanism is
The axis of rotation, which is the center of the rotation,
The drain valve pull-up portion is provided with a contact portion to which the drain valve pull-up portion comes into contact when the drain valve pull-up portion tries to pull up the drain valve.
The washing water tank device according to claim 2, wherein the contact portion is located above the rotation axis when pulled up. When the movable body is viewed from the side of the rotating shaft in the axial direction when the drain valve pulling portion pulls up the contact portion, the contact portion is located directly above the rotating shaft. The washing water tank device according to claim 3. The washing water tank device according to claim 3 or 4, wherein the center of gravity of the movable body is located above the rotation axis. The drain valve pulling section is composed of a drain valve hydraulic drive section that drives the drain valve by utilizing the supply pressure of the supplied tap water.
The drain valve hydraulic drive unit
A cylinder into which the washing water supplied from the water supply control device that controls the water supply from the water supply flows in, and
A piston that is slidably arranged in this cylinder and is moved upward by the pressure of the washing water that has flowed into the cylinder.
With a rod extending downward from the piston,
The washing water tank device according to any one of claims 3 to 5, wherein the central axis of the rod and the central axis of the drain valve are located on the same axis. The washing water tank device according to claim 6, wherein the contact portion between the rod and the contact portion is located inside the outer diameter of the rod when viewed from above. When the rod pulls up the contact portion, the contact portion is the same as the center axis of the rod and the center axis of the drain valve when viewed from the side view from the extending direction of the rotation center axis of the movable body. The washing water tank device according to claim 6 or 7, which is located on the axis. It ’s a flush toilet device,
The washing water tank device according to any one of claims 1 to 8.
The flush toilet that is washed with the wash water supplied from this wash water tank device,
A flush toilet device characterized by having.

Images