JP2021127645A - Valve unit and water closet equipped with the same - Google Patents

Abstract

To provide a valve unit in which the valve unit can suppress water leakage due to a member that blocks an internal flow channel coming off, and makes it possible to reduce a size of an entire device, and a water closet equipped with the same.SOLUTION: A valve unit 14 of the present invention comprises: a main valve body 17 that opens/closes an inflow port 6c of a secondary side water supply channel 6b; a solenoid valve unit 18 that can open/close the main valve body; a manual operation valve 46 that opens/closes a pressure chamber manually operated in an event of a power failure; and a power failure flow channel 56 that extends from the pressure chamber so as to bypass the inflow port of the secondary side water supply channel and communicates with the middle of the secondary side water supply channel. The power failure flow channel has a bent part B that extends parallel to a flow channel axis A3 direction of a secondary side water supply channel 6e and then bends in a direction orthogonal to the flow channel axis direction. A communication hole 56d that communicates with an outside is formed in the bent part, a closing member 57 is provided in the communication hole, and a detachment prevention member is provided separately from the closing member in a removal direction D of the closing member.SELECTED DRAWING: Figure 4

Description

The present invention relates to a valve unit and a flush urinal provided with the valve unit, and more particularly to a valve unit provided in a water supply channel for supplying wash water to the flush urinal and a flush urinal provided with the valve unit.

Conventionally, for example, as described in Patent Document 1, a flush toilet device having a power failure response function has been known. Such a flush toilet device includes a water supply system functional unit involved in a water supply function to the toilet body. This water supply function unit has a built-in solenoid valve for opening and closing the main valve (water supply valve) that opens and closes the internal water supply channel. The solenoid valve is opened, and water can be supplied to the toilet bowl body.

JP-A-2017-227080

On the other hand, in recent years, in order to improve the design of the flush toilet, there is an increasing demand for miniaturization of the water supply system functional part in and around the toilet bowl body, and the water supply channel related to the water supply system functional part and this water supply. How to reduce the size of the valve unit including the main valve and the solenoid valve that open and close the road has become a required issue.
However, as the miniaturization of such valve units progresses, the normal water supply path that is opened and closed by the main valve and the solenoid valve, and the water supply path during a power failure that enables water supply even if the solenoid valve does not operate during a power failure. Are close to each other, and the internal flow path of the valve unit becomes complicated.
As a result, for example, when the flow path of the valve unit is integrally molded by mold molding or the like, a hole for die cutting is formed in a part of the flow path. It may have to be covered with a body lid member.
Further, since such a hole for die cutting is directly connected to the flow path of the valve unit after manufacturing, if the lid member is not completely fixed to the valve unit and comes off. , There is a problem that water in the flow path may leak from there.
Further, it is assumed that the separate lid member is fixed to the valve unit with screws, but there is a problem that the entire valve unit may become large due to the mutual fixing portions provided on the valve unit and the lid member. There is.

Therefore, the present invention has been made to solve the above-mentioned problems requested in recent years and the problems of the prior art, and it is possible to suppress water leakage due to the member that blocks the internal flow path coming off, and also to suppress water leakage. It is an object of the present invention to provide a valve unit capable of miniaturizing the entire device and a flush toilet equipped with the valve unit.

In order to solve the above-mentioned problems, the present invention is a valve unit provided in a water supply channel for supplying wash water to a flush toilet, and is provided in an upstream side and a downstream side, respectively, on the primary side water supply channel and the secondary side. The water supply channel, the main valve seat provided at the inflow port at the upstream end of the secondary side water supply channel, and the primary side water supply channel and the secondary side water supply channel that are openable and closable with respect to the main valve seat. A main valve body that enables communication with, a pressure chamber that opens and closes the main valve body by pressure, an electromagnetic valve unit that opens and closes the main valve body by opening and closing the pressure chamber in normal times, and a power failure. A manually operated valve that opens and closes the pressure chamber by manual operation to open and close the main valve body, and a secondary side that extends from the pressure chamber so as to bypass the inflow port of the secondary side water supply channel. A power failure flow path that communicates in the middle of the water supply channel, and that enables communication between the pressure chamber and the secondary side water supply channel by opening the manually operated valve at the time of a power failure. The power failure flow path extends in parallel with the flow path axis direction of the secondary side water supply channel, and then bends in a direction orthogonal to the flow path axis direction of the secondary side water supply channel. A communication hole that communicates with the outside is formed in the bent portion, and a closing member is provided in the communication hole so that the closing member can be removed in the removing direction of the closing member. It is characterized in that the detachment prevention member for prevention is provided separately from the closing member.
In the present invention configured as described above, a closing member is provided so as to be able to close the communication hole formed in the bent portion of the power failure flow path and communicating with the outside, and the closing member is prevented from coming off in the removing direction. Since the member is provided separately from the closing member, it is possible to reliably prevent the closing member from coming off.
As a result, it is possible to prevent water in the power failure flow path from leaking from the communication hole at the bent portion of the power failure flow path.
Further, when the closing member tries to move in the removing direction, the detachment prevention member separate from the closing member can reliably regulate the movement of the closing member from the removing direction, so that the power failure flow path is bent. It is possible to suppress an increase in the size of the mutual fixing portion between the communication hole of the portion and the closing member.
Therefore, the entire valve unit can be miniaturized.

In the present invention, preferably, the solenoid valve unit is provided as the disengagement prevention member adjacent to the outer end portion of the closing member in the removal direction.
In the present invention configured as described above, since the solenoid valve unit is provided as a detachment prevention member adjacent to the outer end portion in the removal direction of the closing member, the solenoid valve unit is a part of the valve unit. By functioning as a part of the water supply system functional unit and also as a detachment prevention member for preventing the closing member from coming off, the two functions can be combined.
Therefore, the entire valve unit including the solenoid valve unit can be miniaturized.

In the present invention, preferably, the solenoid valve unit includes a pilot hole communicating with the power failure flow path, a pilot valve body that opens and closes the pilot hole, a drive unit that drives the pilot valve body, and the drive unit. The cover member includes a cover member that covers the outside of the cover member, and the cover member is an outer end in the removal direction of the closing member as a detachment prevention member so that the total length of the pilot hole is shorter than the total length of the communication hole. It is provided adjacent to the part.
In the present invention configured as described above, the cover member covering the outside of the drive portion of the pilot valve body of the solenoid valve unit is provided adjacent to the outer end portion in the removal direction of the closing member as a detachment prevention member. As a result, it is possible to reliably prevent the closing member from coming off the communication hole at the bent portion of the power failure flow path.
Further, since the total length of the pilot hole can be made shorter than the total length of the communication hole, the entire valve unit can be miniaturized.

In the present invention, preferably, the power failure flow path is formed on the upstream side of the bent portion and extends parallel to the flow path axial direction of the secondary side water supply channel in a plan view. A downstream flow path for power failure, which is formed on the downstream side of the bent portion and extends in a direction orthogonal to the flow path axial direction of the secondary water supply channel, is provided, and the communication hole is formed from the bent portion. It is formed on the extension of the upstream flow path for power failure.
In the present invention configured as described above, the upstream side flow path for power failure is formed on the upstream side of the bent portion in a plan view and extends parallel to the flow path axial direction of the secondary water supply channel, and is downstream for power failure. The side flow path is formed on the downstream side of the bent portion in a plan view and extends in a direction orthogonal to the flow path axial direction of the secondary side water supply channel, and the communication hole is an extension of the upstream side flow path for power failure from the bent portion. Therefore, it is possible to reduce the size of the entire valve unit while securing a flow path for power failure in the limited flow path space in the valve unit.

In the present invention, preferably, the pilot hole of the solenoid valve unit is formed so that the total length thereof is shorter than the total length of the communication hole and extends parallel to the communication hole, with respect to the downstream flow path for power failure. It communicates in an orthogonal state.
In the present invention configured as described above, the total length of the pilot hole of the solenoid valve unit is formed so as to be shorter than the total length of the communication hole and extend parallel to the communication hole, with respect to the downstream flow path for power failure. Since the communication is performed in an orthogonal state, the relative distance between the solenoid valve unit and the power failure flow path can be set shorter than when the total length of the pilot hole of the solenoid valve unit is longer than the total length of the communication hole. can.
Therefore, the entire valve unit can be miniaturized.

Next, the present invention is a flush toilet equipped with the valve unit.
In the present invention configured in this way, it is possible to suppress water leakage due to the closing member that closes the communication hole at the bending portion of the power failure flow path being removed, and it is possible to reduce the size of the entire device. It is possible to provide a flush toilet equipped with.

According to the valve unit of the present invention and the flush toilet provided with the valve unit, it is possible to suppress water leakage due to the removal of the member that blocks the internal flow path, and it is possible to reduce the size of the entire device.

It is an overall block diagram of the flush toilet by one Embodiment of this invention. It is a side view of the flush toilet bowl by one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line III-III of the valve unit of the flush toilet according to the embodiment of the present invention shown in FIG. FIG. 2 is a cross-sectional view taken along line IV-IV of the valve unit of the flush toilet according to the embodiment of the present invention shown in FIG. State) is shown. It is a cross-sectional view similar to FIG. 4 in the valve unit of the flush toilet according to the embodiment of the present invention, and shows a state in which the solenoid valve is opened and the main valve body is opened (water flow state) in a normal state. show. It is the same cross-sectional view as FIG. 4 and FIG.

Hereinafter, a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, FIG. 1 is an overall configuration diagram of a flush toilet according to an embodiment of the present invention. Further, FIG. 2 is a side view of the flush toilet according to the embodiment of the present invention.
As shown in FIGS. 1 and 2, the flush toilet bowl 1 according to the embodiment of the present invention includes a pottery bowl main body 2 and a tank device 4 provided on the rear side thereof.
Further, the toilet bowl main body 2 includes a bowl portion 2a that receives filth, a drain trap portion (drain trap pipe 2b) that extends from the bottom of the bowl portion 2a and discharges filth in the bowl portion 2a, and an upper edge of the bowl portion 2a. It is provided with a rim portion 2c formed in.
Further, each component of the tank device 4 functions as a part of the water supply unit U1 that supplies the washing water to the toilet bowl main body 2, as will be described in detail later.

Next, as shown in FIGS. 1 and 2, the tank device 4 includes a water supply pipe 6 and a water discharge pipe 8 connected to the upstream side and the downstream side, respectively.
The upstream side of the water supply pipe 6 is connected to an external water supply source (not shown) such as a water supply.
On the other hand, the downstream side of the water supply pipe 6 is connected to the water storage tank 10 of the tank device 4. As a result, wash water is supplied from the water supply pipe 6 to the water storage tank 10.
Further, the water supply pipe 6 is provided with a water stop valve 12 and a valve unit 14, respectively, from the upstream side to the downstream side.
Further, each of the upstream side and the downstream side of the valve unit 14 is provided with a primary side water supply channel 6a and a secondary side water supply channel 6b, respectively.

Next, although the detailed structure of the valve unit 14 will be described later, the constant flow valve 16 provided in the primary side water supply passage 6a and the secondary side water supply passage 6b provided in the downstream side of the constant flow valve 16 A main valve body (diaphragm type main valve body 17) that opens and closes the inflow port 6c of the And each have.

Next, as shown in FIG. 1, the tank device 4 is further connected to a connecting unit 20 connected to the downstream side of the valve unit 14 of the water supply pipe 6 and a water storage tank connected to the downstream side of the connecting unit 20. It includes a tank unit 22 including 10.
In the valve unit 14, the flow rate of the washing water in the water supply pipe 6 is constantly adjusted by the constant flow valve 16.
After that, when the solenoid valve unit 18 is electromagnetically opened and the inflow port 6c of the secondary side water supply channel 6b is opened by the main valve body 17, the primary side water supply channel 6a to the secondary side water supply channel of the water supply pipe 6 is opened. The washing water supplied to 6b is supplied to the tank unit 22 via the connecting unit 20.

As shown in FIG. 1, the connecting unit 20 includes a housing 24, an overflow pipe 26, and a check valve 28.
Further, the lower opening 24a of the housing 24 is detachably connected to the upper opening 10a of the water storage tank 10 of the tank unit 22.

Next, the overflow pipe 26 connects the overflow port 24b provided on a part of the side wall of the housing 24 and the water discharge pipe 8.
The upstream side of the water discharge pipe 8 is a connecting pipe (washing water supply pipe) connected to the pump 30 of the tank device 4, and the downstream side thereof is connected to the rim headrace 2d inside the rim portion 2c of the toilet bowl body 2. There is.
Further, the check valve 28 is provided at the overflow port 24b to allow the washing water in the housing 24 to flow into the overflow pipe 26 from the overflow port 24b, while the washing water in the overflow pipe 26 is provided in the housing. It is possible to prevent the backflow into the 24.
That is, after each of the overflow port 24b, the overflow pipe 26, and the check valve 28 overflows from the water storage tank 10 into the housing 24, the water level in the housing 24 is equal to or higher than the predetermined water level (lower edge of the overflow port 24b). At the above water level), the flush water overflowing from the overflow port 24b of the housing 24 is bypassed to the water supply channel (water discharge pipe 8) on the downstream side of the pump 30 to function as an overflow flow path portion.

Next, as shown in FIG. 1, the tank unit 22 includes a water storage tank 10, a pump 30, a float switch 32, and a drain plug 34.
The pump 30 is provided in a part (middle) of the water pipe 36 connected to the upstream side of the water discharge pipe 8. The upstream end 36a of the water pipe 36 is connected to the downstream end 38a of the suction pipe 38 provided in the water storage tank 10.

The wash water stored in the water storage tank 10 is sucked from the suction pipe 38 into the water passage pipe 36 by the operation of the pump 30, and then pumped to the water discharge pipe 8 via the pump 30. There is.
As a result, all of the wash water supplied from the water storage tank 10 to the water discharge pipe 8 by the pump 30 is supplied into the rim headrace 2d from the inlet 2e of the rim headrace 2d.
Then, the wash water in the rim headrace 2d is discharged into the bowl portion 2a from the rim spout 2f at the downstream end of the rim headrace 2d, so that the toilet bowl is washed (so-called toilet bowl wash with 100% rim spout). It has become.
That is, each of the water flow pipe 36 and the water discharge pipe 8 functions as a wash water supply pipe that supplies the wash water pumped from the water storage tank 10 by the pump 30 to the toilet bowl main body 2.

The float switch 32 detects the water level in the water storage tank 10, and the opening / closing operation of the solenoid valve unit 18 of the valve unit 14 is controlled by the controller C based on the water level in the water storage tank 10 detected by the float switch 32. It is supposed to be done.
Further, the operation of the pump 30 is also controlled by the controller C based on the water level in the water storage tank 10 detected by the float switch 32.
For example, when the water level in the water storage tank 10 detected by the float switch 32 is equal to or lower than a predetermined value, the solenoid valve unit 18 is opened, the water supply pipe 6 is opened, and the pump 30 is operated. ..
When the water level in the water storage tank 10 reaches a predetermined water level, the solenoid valve unit 18 is closed, the water supply pipe 6 is closed, and the pump 30 is stopped.

The drain plug 34 is provided on the bottom surface of the water storage tank 10. The drain plug 34 is normally closed at all times and is opened as needed so that the washing water in the water storage tank 10 can be discharged to the outside.

As a result, the tank device 4 including the water supply pipe 6, the water discharge pipe 8, the valve unit 14, each part 16, 17, 18, the connecting unit 20, each part 24, 26, 28, the tank unit 22, and the pump 30. Is provided on the upstream side of the toilet bowl body 2 and functions as a part of the water supply unit U1 that supplies wash water to the toilet bowl body 2.

Next, the details of the valve unit of the flush toilet according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6.
First, FIG. 3 is a cross-sectional view taken along the line III-III of the valve unit of the flush toilet according to the embodiment of the present invention shown in FIG.
As shown in FIGS. 2 and 3, the valve unit 14 is a water storage tank 10 of the tank device 4 provided in a region rearward of the bowl portion 2a of the toilet bowl body 2 (hereinafter, “rear region R1 of the toilet bowl body 2””. It is provided at the lower end.
That is, the valve unit 14 is provided below and to the side of the water storage tank 10 of the tank device 4 in the rear region R1 of the toilet body 2 (on the left side when the toilet body 2 and the tank device 4 are viewed from the front side).
Further, the valve unit 14 is a single cover that is detachably provided on one side of the left and right sides of the toilet bowl body 2 with respect to the rear region R1 (the left side when the toilet body 2 and the tank device 4 are viewed from the front side). It is covered with a member (exterior panel P).
In the flush toilet bowl 1 shown in FIG. 2, the exterior panel P is omitted and is shown only by an imaginary line.

Next, FIG. 4 is a cross-sectional view of the valve unit of the flush toilet according to the embodiment of the present invention shown in FIG. 2 along the IV-IV line, and is a main valve body 17 and a solenoid valve during normal operation and power failure. The valve closed state (water stop state) of the unit 18 is shown.
First, as shown in FIGS. 1 to 4, the solenoid valve unit 18 of the valve unit 14 has a pilot hole (solenoid valve side pilot hole 18a) and a pilot valve body (solenoid valve) that opens and closes the solenoid valve side pilot hole 18a. The side pilot valve body 18b), the solenoid valve side pilot valve chamber 18c accommodating the solenoid valve side pilot valve body 18b, the solenoid 18d which is a driving unit for driving the solenoid valve side pilot valve body 18b, and the solenoid 18d. A cover member 18e that covers the outside is provided.
Next, as shown in FIGS. 1 to 4, the valve unit 14 can clean the toilet bowl even in the event of a power failure, in addition to the constant flow valve 16, the diaphragm type main valve body 17, and the solenoid valve unit 18 described above. It is equipped with a manual water supply operation device 40 (details will be described later) in the event of a power failure.
Further, the manual water supply operation device 40 at the time of a power failure, together with the manual drainage operation device 42 at the time of a power failure described later, functions as a manual operation unit for power failure countermeasures that enables cleaning of the toilet bowl even at the time of a power failure.
Further, as shown in FIGS. 1 to 4, the manual water supply operation device 40 of the valve unit 14 in the event of a power failure can rotate to the side of the valve unit 14 (the left side when the toilet body 2 and the tank device 4 are viewed from the front side). The handle portion 44 provided in the above is provided.
Further, the manual water supply operation device 40 at the time of a power failure includes an operation shaft portion (spindle 46) whose outer end portion is fixed to the handle portion 44. The spindle 46 can move (slide) in the axial direction of the operation axis A0 when the handle 44 is rotated around the rotation center axis (operation axis A0).

Next, as shown in FIG. 4, a pressure chamber (main valve side pressure chamber 50) for opening and closing the main valve body 17 by pressure is provided inside the main body 48 of the valve unit 14.
The spindle 46 also functions as a manually operated valve that opens and closes the main valve side pressure chamber 50 manually to open and close the main valve body 17 in the event of a power failure.
Further, as shown in FIG. 4, a pressure relief passage 52 for communicating the main valve side pressure chamber 50 and the solenoid valve side pilot valve chamber 18c with each other is provided inside the main body 48 of the valve unit 14.
Further, the secondary water supply channel 6b inside the main body 48 of the valve unit 14 is inside the flow path axis A2 extending in the horizontal left-right direction (horizontal direction of the valve unit 14) from the inflow port 6c in the plan view of FIG. A flow extending in the horizontal front-rear direction (longitudinal direction of the valve unit 14) from the upstream lateral flow path 6d formed toward and the downstream end of the upstream lateral flow path 6d (inside and front end of the upstream lateral flow path 6d). It is provided with a downstream longitudinal flow path 6e formed toward the front side of the road axis A3.

Here, as shown in FIG. 4, the primary side water supply channel 6a provided with the constant flow valve 16 extends in the front-rear direction along the flow path axis A1 extending in the horizontal front-rear direction, and then the main valve side pressure. It is formed toward the outside in the horizontal left-right direction (lateral direction of the valve unit 14) toward the chamber 50.
The flow path axis A2 of the upstream side lateral flow path 6d of the secondary side water supply channel 6b and the flow path axis A3 of the downstream side longitudinal flow path 6e of the secondary side water supply channel 6b extend in a direction orthogonal to each other. Further, in the downstream longitudinal flow path 6e of the secondary side water supply channel 6b, the flow path axis A3 is substantially parallel to the flow path axis A1 extending in the horizontal front-rear direction of the primary side water supply channel 6a in the plan view of FIG. It is formed to be.
Further, inside the main body 48 of the valve unit 14, it extends from the main valve side pressure chamber 50 so as to bypass the inflow port 6c of the secondary side water supply passage 6b, and extends on the downstream side in the middle of the secondary side water supply passage 6b. A power failure flow path (communication passage 56) communicating with the flow path 6e is provided.

Next, as shown in FIG. 4, the power failure flow path (communication passage 56) is specifically the operation axis A0 of the handle portion 44 from the main valve side pilot hole 54 on the side of the main valve side pressure chamber 50. It is provided with an upstream side passage for power failure (upstream side continuous passage 56a) that extends to the front side after extending to the outside in the direction.
Further, the power failure flow path (communication passage 56) is a power failure downstream flow path (downstream side continuous passage 56b) extending inward from the bent portion B at the front end of the upstream side continuous passage 56a toward the secondary side water supply channel 6b. ) Is provided. The downstream side communication passage 56b is always in communication with the solenoid valve side pilot hole 18a of the solenoid valve unit 18 in a state orthogonal to each other.

Here, the upstream side passage for power failure (upstream side continuous passage 56a) is a downstream longitudinal flow path of the secondary side water supply channel 6b from the opening 56c near the spindle 46 to the bent portion B in the plane of FIG. It is formed so as to extend parallel to the flow path axis A3 of 6e.
On the other hand, the downstream side passage for power failure (downstream side continuous passage 56b) is orthogonal to the flow path axis A3 of the downstream side longitudinal flow path 6e of the secondary side water supply channel 6b from the bent portion B to the downstream end (2). It is formed so as to extend (parallel to the flow path axis A2 of the upstream side horizontal flow path 6d of the next side water supply channel 6b).

Next, as shown in FIG. 4, the extension of the power failure upstream side passage (upstream side communication passage 56a), that is, the front side of the bent portion B at the front end of the upstream side communication passage 56a communicates with the outside. An external communication hole 56d is formed. The diameter of the external communication hole 56d is larger than the diameter of the flow paths of the communication passages 56a and 56b, and the closing member 57 is attached so as to be able to close.
Here, the solenoid valve side pilot hole 18a of the solenoid valve unit 18 is formed so that the total length thereof is shorter than the total length of the communication hole 56d and extends in parallel with the communication hole 56d.
Further, the closing member 57 includes a lid member 57a that can be inserted into the external communication hole 56d with almost no gap, and a sealing member 57b such as an O-ring that is watertightly provided on the outer peripheral surface of the insertion portion of the lid member 57a. I have.
Further, the rear end surface 18f of the cover member 18e of the solenoid valve unit 18 is arranged so as to be adjacent to the outer end surface (front end surface 57c) of the lid member 57a of the closing member 57 attached to the external communication hole 56d. Has been done.

That is, as shown in FIG. 4, the solenoid valve unit 18 and its cover member 18e are in the removal direction D (front side) of the lid member 57a with respect to the outer end surface (front end surface 57c) of the lid member 57a of the closing member 57. They are arranged adjacent to each other and function as a detachment prevention member for preventing the closing member 57 (cover member 57a, seal member 57b) from detaching.
Further, as shown in FIG. 4, the solenoid valve unit 18 and its cover member 18e are closed members so that the total length L1 of the solenoid valve side pilot hole 18a is shorter than the total length L2 of the communication hole 56d (L1 <L2). It is arranged adjacent to the outer end surface (front end surface 57c) of 57.

Next, FIG. 5 is a cross-sectional view similar to FIG. 4 in the valve unit of the flush toilet according to the embodiment of the present invention, in which the solenoid valve was opened and the main valve body was opened in a normal state. Indicates the state (water flow state).
In the normal state, the solenoid valve unit 18 is operated by the command signal (valve opening operation signal) transmitted from the controller C, and the solenoid valve side pilot valve body 18b in the valve closed state shown in FIG. 4 operates the valve opening as shown in FIG. In this state, the main valve side pressure chamber 50 communicates with the communication passage 56 from the pressure release passage 52 via the solenoid valve side pilot valve chamber 18c and the solenoid valve side pilot hole 18a.
As a result, when the pressure of the air in the main valve side pressure chamber 50 that presses the main valve body 17 becomes lower than the water supply pressure of the primary side water supply passage 6a, the main valve body 17 moves in the direction of opening the valve, and the primary side The communication port (inflow port 6c of the secondary side water supply channel 6b) that connects the water supply channel 6a and the secondary side water supply channel 6b is opened.
As a result, the wash water of the primary side water supply channel 6a that has passed through the constant flow valve 16 flows into the secondary side water supply channel 6b from the inflow port 6c of the secondary side water supply channel 6b.

On the other hand, as shown in FIG. 4, when the solenoid valve side pilot valve body 18b of the solenoid valve unit 18 closes the solenoid valve side pilot hole 18a again by the command signal (valve closing operation signal) transmitted from the controller C. , The air in the pressure chamber 50 on the main valve side escapes to the pressure relief passage 52, and the pressure cannot be released.
At this time, a part of the washing water of the primary side water supply channel 6a around the main valve seat 58 forming the inflow port 6c of the secondary side water supply channel 6b passes through the bleed hole 60 of the main valve body 17 and the main valve. Since the water flows into the side pressure chamber 50, the pressure in the main valve side pressure chamber 50 is increased, so that the main valve body 17 is pressed toward the main valve seat 58 by the pressure in the main valve side pressure chamber 50. It has become. As a result, the inflow port 6c of the secondary side water supply channel 6b is closed by the main valve body 17 (water stop state).
Here, an O-ring 62 is provided on the outer peripheral surface in the vicinity of the tip portion 46a of the spindle 46. As a result, in the normally closed state of the main valve body 17, the main valve side pressure chamber 50 and the communication passage 56 are sealed by the O-ring 62 of the spindle 46 so as not to communicate with each other.

Next, FIG. 6 is a cross-sectional view similar to FIGS. 4 and 5 in the valve unit 14 of the flush toilet 1 according to the embodiment of the present invention, in which the main valve body 17 at the time of a power failure is manually supplied with water during a power failure. 40 indicates a state in which the valve is manually opened (water flow state).
As shown in FIG. 6, the handle portion 44 of the manual water supply operation device 40 at the time of a power failure is screwed into a part of the main body portion 48 of the valve unit 14, and the fastener 64 is attached to one end of the spindle 46. It is fixed.
Since the solenoid valve unit 18 does not operate during a power failure, the spindle 46 is moved outside the operation axis A0 in the axial direction by rotating the handle 44 of the manual water supply operation device 40 around the operation axis A0 in one direction during a power failure. It is designed to move (distal to the main valve side pilot hole 54).
Then, when the spindle 46 and the O-ring 62 move until the main valve side pressure chamber 50 and the communication passage 56 communicate with each other, the air in the main valve side pressure chamber 50 passes through the pressure relief passage 52. After passing through, it is possible to flow out from the solenoid valve side pilot hole 18a to the communication passage 56.
As a result, when the pressure in the main valve side pressure chamber 50 becomes lower than the water supply pressure of the primary side water supply channel 6a, the main valve body 17 moves in the direction of opening the valve, and the inflow port 6c of the secondary side water supply channel 6b is opened. It is designed to be released.
As a result, the wash water of the primary side water supply channel 6a that has passed through the constant flow valve 16 flows into the secondary side water supply channel 6b from the inflow port 6c of the secondary side water supply channel 6b.

As shown in FIGS. 4 and 6, in the event of a power failure, the spindle 46 is moved inside the operation axis A0 in the axial direction by rotating the handle 44 of the manual water supply operation device 40 during a power failure in the other direction around the operation axis A0. It is designed to move (proximal to the main valve side pilot hole 54).
As a result, the air in the main valve side pressure chamber 50 cannot be depressurized into the pressure relief passage 52 and the communication passage 56, while the wash water in the primary side water supply passage 6a around the main valve seat 58 is the main valve body. It passes through the bleed hole 60 of 17 and flows into the pressure chamber 50 on the main valve side.
As a result, the pressure in the main valve side pressure chamber 50 is increased, and the diaphragm type main valve body 17 is pressed toward the main valve seat 58 by the pressure in the main valve side pressure chamber 50.
As a result, the inflow port 6c of the secondary side water supply channel 6b changes from the water flow state opened by the main valve body 17 (see FIG. 6) to the water stop state closed by the main valve body 17 (see FIG. 4). It is supposed to be.
Therefore, in the event of a power failure, as shown in FIGS. 4 and 6, the washing water in the water supply pipe 6 is supplied to and stopped from the tank unit 22 via the connecting unit 20 by the manual operation of the handle portion 44 (supply). Water stop operation) is possible.

Here, as shown in FIGS. 4 to 6, the axially outer end surface 46b of the spindle 46 of the manual water supply operation device 40 during a power failure always protrudes outward from the axially outer end surface 44a of the handle portion 44. The axially outer end of the spindle 46 is a protruding portion of the handle 44 that projects outward in the axial direction.
In particular, as shown in FIG. 6, in the state where the main valve body 17 is opened during a power failure, each of the handle portion 44 and the spindle 46 has a shaft rather than the state in which the main valve body 17 shown in FIG. 4 is closed. It is in a position that has moved outward in the direction.
As a result, as shown in FIG. 6, when the main valve body 17 is opened during a power failure, the axially outer end surface 46b of the spindle 46 is in contact with the inner surface of the exterior panel P, and the exterior It is a contact portion that interferes with the panel P.
That is, in the state where the main valve body 17 is opened at the time of a power failure, the axially outer end surface 46b (contact portion) of the spindle 46 projects to the outside in the left-right direction from the mounting position P0 of the exterior panel P.

Next, as shown in FIG. 1, a drainage socket 68 (drainage socket portion) is provided on the downstream side of the drain trap pipe 2b of the toilet bowl body 2, that is, on the rear side and the lower end outlet portion 2g of the drain trap pipe 2b. Has been done. Inside the drainage socket 68, an on-off valve 70 (socket opening / closing portion) that can open / close the flow path is provided.
Further, the manual drainage operation device 42 at the time of a power failure holds the operation wire 72 slidably connected to the on-off valve 70 of the drainage socket 68 and the operation wire 72 so as to be slidable with respect to the toilet bowl main body 2. It is provided with a fixing unit 74 for fixing the wire.

Next, the end of the operation wire 72 on the drainage socket side is directly or indirectly connected to a part of the on-off valve 70.
Further, a ring member 76 for gripping is provided at the end of the operation wire 72 on the toilet bowl main body side (user side) so that the user can grip the operation wire 72.
Then, in the event of a power failure, the user grips the ring member 76 and slides the operation wire 72 in the front-rear direction with respect to the fixing unit 74, so that the on-off valve 70 of the drainage socket 68 can be opened and closed. ..

For example, as an example of water supply / drainage operation during a power failure, first, the on-off valve (main valve body 17) of the valve unit 14 is opened by manually rotating the handle 44 of the manual water supply operation device 40 during a power failure. Water is supplied to the water storage tank 10 of the water supply unit U1.
Next, the ring member 76 for gripping the manual drainage operation device 42 at the time of a power failure is manually operated to close the on-off valve 70 of the drainage socket 68.
Then, when the water level in the water storage tank 10 becomes equal to or higher than the predetermined water level and rises to the inside of the housing 24 above the water storage tank 10, the washing water in the housing 24 flows from the overflow flow path portion (overflow pipe 26) downstream of the pump 30. After the wash water is bypassed to the water supply channel (water discharge pipe 8) on the side, it is supplied to the toilet bowl main body 2.
As a result, water can be sealed in the flow path in the drainage socket 68 on the upstream side of the on-off valve 70 of the drainage socket 68 and in the drain trap pipe 2b of the toilet bowl body 2, and the water is stored in the bowl portion 2a of the toilet bowl body 2. Is possible.
Next, when the on-off valve 70 of the drainage socket 68 is opened again by operating the manual drainage operation device 42 at the time of a power failure, the washing water in the bowl portion 2a of the toilet body 2 is drained from the drain trap pipe 2b to the outside through the drainage socket 68. Can be reliably discharged to.
After that, when the on-off valve (main valve body 17) of the valve unit 14 is closed by manually rotating the handle 44 of the manual water supply operation device 40 during a power failure, a series of water supply and drainage to the toilet body 2 during a power failure is completed. ..

Next, with reference to FIGS. 1 to 6, the operation of the valve unit 14 according to the above-described embodiment of the present invention and the flush toilet bowl 1 provided with the valve unit 14 will be described.
According to the valve unit 14 according to the embodiment of the present invention and the flush toilet bowl 1 provided with the valve unit 14, an external communication hole 56d formed in a bent portion B of a power failure passage (communication passage 56) and communicating with the outside. The closing member 57 (the lid member 57a and the sealing member 57b) is provided so as to be able to close.
Then, in the removal direction D of the closing member 57 (the lid member 57a and the sealing member 57b), the solenoid valve unit 18 is provided as a detachment prevention member separately from the closing member 57, so that the closing member 57 ( It is possible to reliably prevent the lid member 57a and the seal member 57b) from coming off.
As a result, it is possible to prevent water in the power failure flow path from leaking from the external communication hole 56d of the bent portion B of the power failure flow path (communication passage 56).
Further, when the lid member 57a of the closing member 57 tries to move in the removal direction D, the solenoid valve unit 18, which is a detachment prevention member separate from the closing member 57, moves the lid member 57a of the closing member 57. It can be reliably regulated from the removal direction D.
Therefore, it is possible to suppress the enlargement of the mutually fixed portions of the external communication hole 56d and the closing member 57 of the bent portion B of the power failure flow path (communication passage 56), so that the entire valve unit 14 can be miniaturized. It becomes.

Next, according to the valve unit 14 according to the present embodiment and the flush toilet bowl 1 provided with the valve unit 14, the solenoid valve unit 18 serves as a detachment prevention member at the outer end portion (outer end surface (front end)) of the closing member 57 in the removal direction D. Surface) 57c) is provided adjacent to it.
As a result, the solenoid valve unit 18, which is a part of the valve unit 14, functions as a part of the water supply system functional unit and also as a detachment prevention member for preventing the closing member 57 from coming off, thereby performing two functions. Can be combined.
Therefore, the entire valve unit 14 including the solenoid valve unit 18 can be miniaturized.

Next, according to the valve unit 14 according to the present embodiment and the flush toilet 1 provided with the valve unit 14, a cover member that covers the outside of the solenoid 18d, which is the driving unit of the solenoid valve side pilot valve body 18b of the solenoid valve unit 18. As for 18e, the closing member 57 is provided adjacent to the outer end portion (outer end surface (front end surface) 57c) of the closing member 57 in the removal direction D as a detachment prevention member, so that the closing member 57 is provided as a power failure flow path (communication passage 56). ) Can be reliably prevented from coming off from the external communication hole 56d of the bent portion B.
Further, since the total length L1 of the solenoid valve side pilot valve body 18b can be shorter than the total length L2 of the external communication hole 56d, the entire valve unit 14 can be miniaturized.

Next, according to the valve unit 14 according to the present embodiment and the flush toilet 1 provided with the valve unit 14, the upstream side passage 56a of the power failure passage (communication passage 56) is bent in the plan view of FIG. It is formed on the upstream side of the portion B, and extends parallel to the flow path axis A3 direction of the downstream side longitudinal flow path 6e of the secondary side water supply channel 6b.
Further, the downstream side communication passage 56b of the power failure flow path (communication passage 56) is the flow path of the downstream side longitudinal flow path 6e of the secondary side water supply passage 6b from the bent portion B to the downstream end portion in the plan view of FIG. It extends in a direction orthogonal to the axis A3 (parallel to the flow path axis A2 of the upstream side lateral flow path 6d of the secondary side water supply channel 6b), and the external communication hole 56d extends from the bent portion B to the upstream side communication passage 56a. Is formed in.
As a result, the entire valve unit 14 can be miniaturized while ensuring a power failure flow path in the limited flow path space inside the main body 48 of the valve unit 14.

Further, according to the valve unit 14 according to the present embodiment and the flush toilet 1 provided with the valve unit 14, the total length L1 of the solenoid valve side pilot hole 18a of the solenoid valve unit 18 is larger than the total length L2 of the external communication hole 56d. It is short (L1 <L2), is formed so as to extend parallel to the external communication hole 56d, and communicates in a state orthogonal to the downstream communication passage 56b.
As a result, compared with the case where the total length L1 of the solenoid valve side pilot hole 18a of the solenoid valve unit 18 is longer than the total length L2 of the external communication hole 56d (L1> L2), the solenoid valve unit 18 and the power failure flow path (communication). The relative distance to the passage 56) can be set short.
Therefore, the entire valve unit 14 can be miniaturized.

Further, according to the flush toilet bowl 1 provided with the valve unit 14 according to the present embodiment, water leakage due to the closing member 57 that closes the external communication hole 56d of the bent portion B of the power failure flow path (communication passage 56) is removed. It is possible to provide a flush toilet bowl 1 provided with a valve unit 14 that can be suppressed and the entire device can be miniaturized.

1 Toilet bowl 2 Toilet bowl body 2a Bowl part 2b Drain trap pipe 2c Rim part 2d Rim headrace 2e Rim headrace inlet 2f Rim spout 2g Drain trap pipe outlet 2h Bottom wall of toilet bowl 2i Mounting hole 2j Toilet bowl Top surface of the bottom wall of the main body 4 Tank device 6 Water supply pipe 6a Primary side water supply channel 6b Secondary side water supply channel 6c Secondary side water supply channel inflow port 6d Secondary side water supply channel upstream side channel 6e Secondary side water supply channel Downstream long flow path 8 Water discharge pipe (water supply unit)
8a Water discharge pipe outlet 10 Water storage tank 10a Upper opening 12 Water stopcock 14 Valve unit 16 Constant flow valve 17 Diaphragm type main valve body (main valve body)
18 Solenoid valve unit (disengagement prevention member)
18a Solenoid valve side pilot hole (pilot hole)
18b Solenoid valve side pilot valve body (pilot valve body)
18c Solenoid valve side pilot valve chamber 18d Solenoid (drive unit of solenoid valve unit)
18e cover member (disengagement prevention member)
18f Rear end surface of cover member 20 Connecting unit 22 Tank unit 24 Housing 24a Lower opening 24b Overflow port 26 Overflow pipe 28 Check valve 30 Pump 32 Float switch 34 Drain plug 36 Water flow pipe 36a Upstream end of water pipe 38 Suction pipe 38a Downstream end of suction pipe 40 Manual water supply operation device in case of power failure 42 Manual drainage operation device in case of power failure 44 Handle part 44a Axial outer end face of handle part 46 Spindle (manual operation valve)
46a Spindle tip 46b Spindle axial outer end 48 Valve unit body 50 Main valve side pressure chamber (pressure chamber)
52 Pressure relief passage 54 Main valve side pilot hole 56 Continuous passage (power outage passage)
56a Upstream communication passage 56b Downstream communication passage 56c Opening near the spindle of the upstream communication passage 56d External communication hole 57 Closure member 57a Lid member 57b Seal member 57c Outer end surface (front end surface) of the lid member
58 Main valve seat 60 Bleed hole 62 O-ring 64 Fastener 68 Drainage socket 70 Open / close valve 72 Operation wire 74 Fixing unit 76 Ring member for gripping A0 Operation axis of handle A1 Channel axis of primary side water supply channel A2 Secondary side Flow path axis of the upstream side of the water supply channel A3 Flow path axis of the downstream side longitudinal flow path of the secondary side water supply channel B Bending part of the continuous passage (bending part of the power failure flow path)
C controller D removal direction P exterior panel (cover member)
P0 Exterior panel mounting position R1 Rear area of the toilet body U1 Water supply unit

Claims (6)

A valve unit installed in a water supply channel that supplies wash water to a flush toilet.
The primary side water supply channel and the secondary side water supply channel provided on the upstream side and the downstream side, respectively,
The main valve seat provided at the inflow port at the upstream end of this secondary water supply channel,
A main valve body that is provided so as to be openable and closable with respect to the main valve seat and enables communication between the primary side water supply channel and the secondary side water supply channel.
A pressure chamber that opens and closes this main valve body by pressure,
A solenoid valve unit that can open and close the main valve body by opening and closing the pressure chamber in normal times.
A manually operated valve that opens and closes the pressure chamber manually to open and close the main valve body in the event of a power failure.
A power failure flow path that extends from the pressure chamber so as to bypass the inflow port of the secondary side water supply channel and communicates with the middle of the secondary side water supply channel, and is a valve opening operation of the manually operated valve in the event of a power failure. It has the power failure flow path that enables communication between the pressure chamber and the secondary water supply channel.
The power failure flow path includes a bent portion that extends parallel to the flow path axis direction of the secondary side water supply channel and then bends in a direction orthogonal to the flow path axis direction of the secondary side water supply channel.
A communication hole that communicates with the outside is formed in this bent portion, and a closing member is provided in this communication hole.
A valve unit characterized in that, in the removing direction of the closing member, a disconnection preventing member for preventing the closing member from coming off is provided separately from the closing member. The valve unit according to claim 1, wherein the solenoid valve unit is provided as a disengagement prevention member adjacent to an outer end portion in a removal direction of the closing member. The solenoid valve unit includes a pilot hole communicating with the power failure flow path, a pilot valve body that opens and closes the pilot hole, a drive unit that drives the pilot valve body, and a cover member that covers the outside of the drive unit. , Equipped with
Claim that the cover member is provided adjacent to the outer end portion in the removal direction of the closing member as the detachment prevention member so that the total length of the pilot hole is shorter than the total length of the communication hole. The valve unit according to 1 or 2. The power failure flow path is formed on the upstream side of the bent portion and extends parallel to the flow path axial direction of the secondary side water supply channel in a plan view, and the power failure upstream side flow path and the downstream side of the bent portion. It is provided with a downstream flow path for power failure, which is formed in the above and extends in a direction orthogonal to the flow path axial direction of the secondary side water supply channel.
The valve unit according to claim 2 or 3, wherein the communication hole is formed on an extension of the upstream flow path for power failure from the bent portion. The pilot hole of the solenoid valve unit is formed so that its total length is shorter than the total length of the communication hole and extends parallel to the communication hole, and communicates in a state orthogonal to the downstream flow path for power failure. The valve unit according to claim 4. A flush toilet equipped with the valve unit according to any one of claims 1 to 5.

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