JP2008031784A - Water pressure control device and flushing valve unit for flush toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water pressure control device which is mounted to a flushing valve device for a flush toilet bowl of an existing diaphragm valve type in place of a push-button type manual valve, and to provide a flushing valve unit for the flush toilet bowl. <P>SOLUTION: The water pressure control device has a tip a base, and an internal space, and has a solenoid valve connected to the bottom thereof. The tip is provided with an O ring and fitted to an outflow port communication channel to seal a water flow from a pressure holding communication channel to the outflow port communication channel. Then the space has a control chamber formed therein and partitioned by a channel forming section and a solenoid valve water sealing section. The base has a screw formed at the side surface thereof which is screwable to a main body, and an inflow channel formed therein so as to communicate from the pressure holding communication channel to the control chamber. Further the channel forming section has an outflow channel formed therein so as to communicate from the control chamber to the outflow port communication channel, and the tip of the outflow channel is formed as a pilot valve seat and arranged so as to be opposed to a pilot valve front end face on the same axial line as that of a solenoid valve armature, to thereby control water pressure in the pressure holding communication channel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a water pressure control device and a flush valve unit for a flush toilet, and more specifically, an existing installation that opens and closes a flow path between an inflow side of a main body and a main flow path by manual operation of a push button so that water flows when necessary. A water pressure control device that replaces the push button type manual valve that is detachably mounted on the main body of the flush valve device for the flush toilet of the diaphragm valve system, and the flush toilet that is configured by enclosing the water pressure control device in a casing The present invention relates to a cleaning valve unit.

  As a device for washing male urinals, a flush valve device for flush toilets with a diaphragm valve system that opens and closes the flow path between the inflow side of the main body and the main flow path by manual operation of a push button and allows water to flow when necessary. There is. This apparatus is widely used because it can be installed in a place without a power source because it does not require power during operation. However, since the pressing operation of the push button by the toilet bowl user is necessary, the flushing valve device for the flush toilet is not required from the viewpoint of user friendliness and hygiene, so that the pressing operation is unnecessary. There is a demand for automatic water washing.

  As a conventional push button type flush toilet flushing valve device, there is a flush toilet flushing valve device 201 shown in FIG. Here, 210 is an inflow pipe, 212 is a main body containing a washing valve, and 214 is a discharge pipe connected to the toilet. The washing valve is composed of a relief valve 216, a relief valve support mechanism, a push button 217, a push rod 218, and the like, and the closed flow path is opened by pushing the push button 217, and a predetermined amount of water is discharged to the discharge pipe 214 side. It is configured to flow out. Reference numeral 219 denotes a plug bar for adjusting the amount of water flowing in, and 220 is a packing.

  With regard to such a conventional push-button flush valve apparatus 201 for a flush toilet, as an invention that enables the apparatus to be easily automatically washed with water, Japanese Patent Laid-Open No. 11-210046 discloses the invention by the inventors of the present invention. The flush valve unit 301 for a flush toilet shown in FIG. 5 has been proposed.

  The flush valve unit 301 for the flush toilet is formed in a size that is fitted and sealed in a watertight manner with the inner wall surface of the main body, and the lower end faces the discharge-side flow path and faces the central portion in the vertical direction. A main flow path 328 is formed, and a flow path in which an inflow side flow path 330 is formed on the side of the main flow path, one end side communicating with the inflow pipe 310 and the other end side communicating with the connection flow path 332 provided on the main flow path. A forming body 322 is provided, and a diaphragm 336 that is disposed in the connection flow path and abuts against a valve seat 334 provided in the upper part of the main flow path to control the flow of water between the main flow path and the inflow side flow path. And an armature 342 that is urged to abut against the rear portion of the diaphragm in a casing 350 provided at an upper portion of the flow path forming body, and that normally abuts the diaphragm against the valve seat, and resists the urging force against the urging force. Electromagnetic suction Housing the electromagnet unit including Le, is intended to provide a control unit for driving the electromagnet unit based on a signal from the sensor 352 and the sensor for sensing the user of the toilet to the casing.

Japanese Patent Laid-Open No. 11-210046

  However, recently, instead of the conventional push button type flush toilet flush valve device 201, the push button flush toilet flush valve device 101 shown in FIG. 3 is becoming mainstream. However, the flush valve device 101 for the flush toilet is different from the flush valve device 201 for the flush toilet in that the internal configuration of the flush toilet device is different from that of the flush toilet device 201. It is impossible to wash with water.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to simplify the automatic flushing of the flush valve apparatus 101 for a push button type flush toilet. It is replaced with a push button type manual valve that is detachably attached to the main body of the flush valve device for the flush toilet using an existing diaphragm valve system that opens and closes between the inflow side flow channel and the main flow channel and allows water to flow when necessary. A water pressure control device to be attached and a flush valve unit for a flush toilet provided with a casing housing a human body sensor, a solenoid valve, a driving battery and a control unit so that the water pressure control device is included. Objective.

  The present invention solves the above-described problems by the solving means described below.

  The water pressure control device according to the present invention is a cleaning valve device for flush toilets using an existing diaphragm valve system that opens and closes between the inflow side flow channel of the main body and the main flow channel by manual operation of the push button, and flows water when necessary. A hydraulic pressure control device that is installed in place of a push button type manual valve that is detachably attached to the main body, and includes a continuous tip and a base, a space is provided inside, and an electromagnetic valve is provided at the bottom of the base. The front end portion is provided with an O-ring, and is fitted into a water outlet communication channel in the main body to seal the water flow from the pressure holding communication channel in the main body to the water outlet communication channel. A control chamber that is partitioned by a flow path component provided therein and a water seal portion of the electromagnetic valve is formed in the space portion, and the base portion is formed on the side surface of the base portion. Manual valve mounting screw A screw part for attachment and detachment is provided so as to be able to be screwed, and a water inlet passage communicating from the pressure holding communication channel to the control chamber is provided, and the flow channel component is connected to the water outlet from the control chamber. A water discharge passage communicating with the flow path is provided, and the front end portion of the water discharge passage on the control chamber side is formed as a pilot valve valve seat, and the front end of the pilot valve provided at the front end of the armature on the same axis as the armature of the electromagnetic valve The pilot valve is normally placed in contact with the pilot valve valve seat, and when necessary, the pilot valve is separated from the pilot valve valve seat. The water pressure in the pressure holding communication channel is controlled.

  The solenoid valve is self-holding and the drive power source is a battery.

  Further, the attaching / detaching screw portion includes a thread notch portion over the entire length of the screw portion in the attaching / detaching direction.

  The flush valve unit for flush toilets according to the present invention is a flush toilet flushing system using an existing diaphragm valve system that opens and closes between the inflow side flow channel of the main body and the main flow channel by manual operation of a push button, and allows water to flow when necessary. 3. The flush control unit for flush toilets according to claim 2, wherein the push button type manual valve is detachably attached to the main body of the valve device, wherein the push button type manual valve of the main body is removed. A casing that is screwed into the part and houses a human body sensor that senses a user of a toilet, a battery for driving an electromagnetic valve, and a control unit that controls the driving of the electromagnetic valve according to a signal from the human body sensor However, the water pressure control device is provided so as to be supported by one or both of the water pressure control device and the main body so that the water pressure control device is included. To.

  According to the first aspect, a water channel is formed from the pressure holding communication channel to the water outlet communication channel through the water inlet channel, the control chamber, and the water outlet channel. By the operation of the pilot valve, a water flow can be generated in the water channel to reduce the water pressure in the pressure holding communication channel, and the water flow in the water channel can be stopped to stop the water flow in the pressure holding communication channel. The water pressure can be kept constant. In this way, the water pressure in the pressure holding communication channel can be controlled by the water pressure control device.

  According to claim 2, it is possible to employ a solenoid valve that is self-holding and consumes less power. As a result, the electromagnetic valve can be driven by a small battery. In addition, since battery consumption is small, battery replacement is not necessary for a plurality of years. In addition, by realizing the driving of the solenoid valve by a small battery, it becomes possible to eliminate the need for wiring of a household AC power source. As a result, the water pressure control device according to the present invention can be used even in a place where there is no power source, and the appearance of the entire flush valve device for the flush toilet can be improved.

  According to the third aspect, since the thread notch portion provided in the attaching / detaching screw portion functions as a main water channel, the flow rate of the passing water can be adjusted by appropriately setting the shape of the thread notch portion. It becomes possible.

  According to the fourth aspect of the present invention, even if the flush valve device is a flush toilet device of the existing diaphragm valve type equipped with the push button type manual valve, the push button type manual valve is removed from the main body, and the portion is removed from the flush toilet device. It is possible to change the washing valve device for the flush toilet with the manual washing method to the washing valve device for the flush toilet with the automatic washing method by simply replacing it with the washing valve unit for washing.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram illustrating an example of a water pressure control apparatus 1 according to an embodiment of the present invention. Moreover, FIG. 2 is the schematic which shows an example of the flush valve unit 50 for flush toilets concerning embodiment of this invention. FIG. 3 is a schematic diagram showing the configuration of a flush valve apparatus 101 for a flush toilet using an existing diaphragm valve system.

  1 shown in FIG. 1 is a water pressure control device. As shown in FIG. 2, the water pressure control device 1 is installed in place of a push button type manual valve 91 that is detachably attached to a main body 90 of a flush valve device (FIG. 3) using an existing diaphragm valve system. . By removing only the push button type manual valve 91 from the main body, the water pressure control device 1 can be mounted. Therefore, the mounting operation is extremely easy.

  Here, the water pressure state in the main body 90 will be described with reference to FIG. The water inlet 54 of the main body 90 is connected to a water pipe (not shown) to apply water pressure. In the state where the stop cock 93 is opened, the same water pressure as that in the water pipe is generated in the inflow channel 51. Further, the same water pressure as that in the water pipe is also generated in the pressure holding communication channel 56 through a water passage hole (not shown) inside the diaphragm valve 61. Here, when the pressure in the inflow side flow channel 51 and the pressure holding communication flow channel 56 is the same, the diaphragm valve 61 is held in contact with the diaphragm valve valve seat 62. Thereby, the water flow from the inflow side channel 51 to the main channel 52 is blocked. This state is a normal state.

  As shown in FIG. 1, the water pressure control device 1 is formed by continuously connecting a distal end portion 2 and a base portion 3. A space 5 is provided in the interior. A solenoid valve 20 is coupled to the base bottom 4.

  The solenoid valve 20 is a solenoid valve which is a self-holding type and has a driving power source as a battery as an example. The electromagnetic valve 20 houses an armature 22 and an electromagnet unit 26 including an electromagnetic coil that attracts and drives the armature 22 against an urging force. The armature 22 is housed in a guide cylinder that is open at one end, and is normally urged by the urging member 25 so as to be positioned on the opening side.

  The distal end portion 2 includes an O-ring 7 and is fitted into the water outlet communication channel 53 in the main body portion 90. Thereby, the effect | action which seals the water flow from the pressure holding | maintenance communication flow path 56 in the main-body part 90 to the water outlet connection flow path 53 arises. As an effect, the water pressure in the pressure holding communication channel 56 can be kept constant by not generating the water flow.

  The space portion 5 is formed over the entire length from the distal end portion 2 to the base bottom portion 4 of the hydraulic pressure control device 1. A flow path component 10 is provided in the space 5. The outer diameter of the flow path component 10 is the same as the inner diameter of the space 5. Here, the flow path component 10 may be integrated with the distal end 2 or the base 3 or may be a separate body, but when formed separately, an O-ring (not shown) is provided on the outer periphery thereof. It is necessary to seal so that a water flow does not arise between the wall surfaces of the space part 5 as a structure provided with the above. On the other hand, the electromagnetic valve 20 is coupled to the base bottom 4, and the base bottom 4 side opening of the space 5 is sealed by the water seal 21 of the electromagnetic valve 20. As a function of these, a part of the space portion 5 is partitioned by the flow path constituting portion 10 and the water seal portion 21 of the electromagnetic valve 20, thereby forming a sealed chamber-like control chamber 6.

  The base 3 is provided with a detachable screw portion 11 on the base side surface 16. The detachable screw portion 11 is formed so as to be screwable with the manual valve mounting screw portion 92 of the main body portion 90. That is, the outer diameter and screw pitch of the attaching / detaching screw portion 11 are the same as those in the push button type manual valve 91. As a result, the water pressure control device 1 can be mounted on the main body 90 where the push button type manual valve 91 is removed.

  When the water pressure control device 1 is mounted on the main body 90, as shown in FIG. 2, at least the tip of the attaching / detaching screw portion 11 on the tip 2 side faces the pressure holding communication channel 56. (Note that when the water pressure control device 1 is further inserted into the main body 90, the side surface of the attaching / detaching screw portion 11 may also be configured to face the pressure holding communication channel 56.) Here, the attaching / detaching screw portion 11 The gap formed in the threaded portion between the thread (male) and the thread (female) of the manual valve mounting thread 92 of the main body 90 acts as a water channel. As a result, water enters the base side surface 16 from the pressure holding communication channel 56. Therefore, by providing the water inlet 13 that communicates from the base side surface 16 to the control chamber 6, a water channel from the pressure holding communication channel 56 to the control chamber 6 is formed. The water inlet 13 may be formed so as to communicate directly with the control chamber 6 from the pressure holding communication channel 56.

  Moreover, in the attaching / detaching screw portion 11, the thread notch portion 12 may be provided over the entire length of the screw portion in the attaching / detaching direction. For example, the thread notch 12 may have a groove shape such as a key groove or a shape in which the thread is removed. The thread notch 12 serves as the main water channel. By appropriately setting the shape of the thread notch 12, there is an effect that the flow rate of water passing therethrough can be adjusted.

  The flow path component 10 is provided with a water discharge path 14 that communicates from the control chamber 6 to the water outlet communication flow path 53. As an action thereof, a water channel from the control chamber 6 to the water outlet communication channel 53 is formed. Further, the front end portion of the outlet channel 14 on the control chamber side is formed as a pilot valve valve seat 15. More specifically, the pilot valve valve seat 15 (the front end portion of the water discharge passage 14) is arranged so as to face the front end surface 24 of the pilot valve 23 provided at the front end of the armature on the same axis as the armature 22 of the solenoid valve. Established.

  At first glance, the above waterway configuration according to the present invention is provided with two water inlets and water outlets, and detours them to a position far from the water outlet 55 without passing through the shortest route. Based on the usual design philosophy, it is unlikely that such a configuration should be taken. That is, if a standard design is used, for example, the pilot valve 23 is slid by providing only one water passage hole that serves both as the above-mentioned water inlet and water outlet just below the pressure holding communication channel 56, and the pilot valve It is conceivable to adopt a configuration in which the water channel hole is opened and closed on the side surface of 23.

  However, if such a standard configuration is adopted, the pilot valve must be slid laterally in contact with the wall surface of the space 5, and the general self-holding because the frictional force is too large. With a solenoid valve, the operating force is insufficient, making it impossible to use. Further, a sliding amount over a length longer than the outer diameter of the water channel hole is required, and an instantaneous opening / closing operation is impossible. Furthermore, since a pressure in the direction perpendicular to the axial direction of the armature 22 acts, it is difficult to maintain the water pressure, and in addition, the armature 22 may malfunction and cause uneven wear. In order to solve such a technical problem, in the present invention, on the same axis as the armature 22 of the solenoid valve 20, the pilot valve is disposed so as to face the tip surface 24 of the pilot valve 23 provided at the tip of the armature. By disposing the valve seat 15 (the front end portion of the water discharge channel 14), the pilot valve 23 is configured not to come into contact with other components except for coming into contact with the pilot valve valve seat 15 when operating. . As a result, the frictional resistance caused by the contact can be eliminated, and it is possible to use a self-holding type solenoid valve 20 that does not have a strong operating force. In addition, the pilot valve 23 is operated in the direction of the pipe of the water discharge passage 14 to open and close the tip of the water discharge passage 14, thereby enabling an instantaneous opening and closing operation with a small slide amount. Furthermore, since the pressure acts in the axial direction of the armature 22, the operation of opening the outlet channel 14 against the water pressure is facilitated, and in addition, the malfunction of the armature 22 and the possibility of uneven wear can be reduced.

  Furthermore, the control chamber side tip portion of the water outlet 14 formed as the pilot valve valve seat 15 has a structure in which the cross-sectional area decreases as it approaches the tip, and the contact area with the pilot valve 23 can be made as small as possible. Is preferred. As an action thereof, it is possible to increase the pressure in the contact region between the pilot valve 23 and the pilot valve valve seat 15. As a result, even if the force that presses the pilot valve 23 against the pilot valve valve seat 15 is weak, it is possible to prevent the water in the control chamber 6 from flowing into the outlet channel 14, thereby reducing the power consumption. Therefore, a self-holding solenoid valve in which the pressing force of the biasing member 25 incorporated in the inside is not strong can be used for opening and closing the outlet channel 14.

  Next, the operation of the pilot valve 23 will be described. Normally, the pilot valve 23 is brought into contact with the pilot valve valve seat 15. More specifically, the armature 22 is urged by the internal urging member 25 in a direction in which the pilot valve 23 is pushed outward from the inside of the electromagnetic valve 20 to be brought into contact with the pilot valve valve seat 15. Note that in such a state where the contact remains, current does not flow from the battery of the drive power supply, and therefore, consumption of the battery can be suppressed. As an action of bringing the pilot valve 23 into contact with the pilot valve valve seat 15, the water flow from the pressure holding communication channel 56 to the outlet connection channel 53 through the inlet channel 13 and the outlet channel 14 is stopped. This produces an effect of keeping the water pressure in the pressure holding communication channel 56 constant.

  On the other hand, when necessary, the pilot valve 23 is separated from the pilot valve valve seat 15. More specifically, the electromagnet unit 26 is driven to operate the armature 22 in a direction in which the electromagnetic valve 20 is pulled inward from the outside against the urging force of the urging member 25, so that the pilot valve 23 is used for the pilot valve. Separate from the valve seat 15. Note that current flows from the battery of the driving power source only at the moment when the armature 22 is operated, and after the operation is completed, the armature 22 is self-held at the position after the operation and does not consume current in such a state where it is separated. As an action of separating the pilot valve 23 from the pilot valve valve seat 15, a water flow is generated from the pressure holding communication channel 56 to the outlet connection channel 53 through the inlet channel 13 and the outlet channel 14. This produces an effect of reducing the water pressure in the pressure holding communication channel 56.

  When it is no longer necessary to reduce the water pressure, the pilot valve 23 is brought into contact with the pilot valve valve seat 15. More specifically, the electromagnet unit 26 is driven so that the armature 22 operates to push the pilot valve 23 outward from the inside of the electromagnetic valve 20 by the urging force of the urging member 25, and the pilot valve 23 is moved to the pilot valve. The valve seat 15 is brought into contact. The current flows from the battery of the driving power source only at the moment when the armature 22 is operated. However, as described above, the armature 22 is self-held at the position after the operation and the current is consumed when the armature 22 remains in contact after the operation is completed. do not do. As an action thereof, when the pilot valve 23 is brought into contact with the pilot valve valve seat 15 after the water pressure is reduced, the water discharge passage 14 is blocked, so that the pressure holding communication flow passage 56 passes through the water intake passage 13 and the water discharge passage 14. The water flow toward the outlet connection channel 53 is stopped. As a result, the inside of the pressure holding communication channel 56 can be gradually filled with water by the water flow flowing from the inflow side channel 51 into the pressure holding communication channel 56 through a water passage (not shown) inside the diaphragm valve 61. . As a result, the effect of gradually increasing the water pressure in the pressure holding communication channel 56 is produced, and finally the water pressure in the pressure holding communication channel 56 is controlled to be the same as the water pressure in the inflow side channel 51. Is possible.

  Then, the flush valve unit for flush toilets concerning this invention is demonstrated. As shown in FIG. 2, the flush valve unit 50 for the flush toilet is replaced with a push button type manual valve 91 that is detachably attached to the main body 90 of the flush valve device (FIG. 3) using an existing diaphragm valve system. The water pressure control device 1 is screwed together, and the casing 71 that houses the human body sensor 74, the electromagnetic valve driving battery 72, and the control unit 73 is supported by the support member so that the water pressure control device 1 is contained. 75 is supported by the main body 90. The support member 75 may be supported by the water pressure control device 1.

  The human body sensor 74 is a sensor that detects a human body approaching the toilet 95 and is provided in front of the casing 71. As an action, the user of the toilet 95 is sensed, and signals such as the start and end of use of the toilet 95 are transmitted to the control unit 73.

  The control unit 73 transmits a control signal to the electromagnetic valve 20 in accordance with the content of the signal transmitted from the human body sensor 74.

  Then, the effect | action of the said Example is demonstrated. When using the toilet bowl 95, the electromagnetic valve 20 is controlled so that the pilot valve 23 at the tip of the armature 22 is separated from the pilot valve valve seat 15 when necessary. As a result, a water flow from the pressure holding communication channel 56 toward the outlet connection channel 53 is generated to reduce the water pressure in the pressure holding communication channel 56, thereby separating the diaphragm valve 61 from the diaphragm valve valve seat 62. An effect occurs. As a result, it is possible to generate water outflow from the inflow side channel 51 to the main channel 52 and to pass the water through the toilet 95.

  On the other hand, after the water has flowed out for a predetermined time, the control unit 73 controls the electromagnetic valve 20 so that the pilot valve 23 at the tip of the armature 22 contacts the pilot valve valve seat 15. Thereby, since the water discharge path 14 is blocked, the water flow from the pressure holding communication flow path 56 to the water outlet connection flow path 53 through the water supply path 13 and the water discharge path 14 is stopped. As a result, the inside of the pressure holding communication channel 56 can be gradually filled with water by the water flow flowing from the inflow side channel 51 into the pressure holding communication channel 56 through a water passage hole (not shown) inside the diaphragm valve 61. The water pressure in the pressure holding communication channel 56 gradually increases, and finally the water pressure in the pressure holding communication channel 56 becomes equal to the water pressure in the inflow side channel 51. As a result, the diaphragm valve 61 comes into contact with the diaphragm valve valve seat 62, so that the outflow of water from the inflow side channel 51 to the main channel 52 can be stopped, and the water flow to the toilet 95 is stopped.

  According to the present invention, even in the flush valve apparatus 101 for flush toilets using the existing diaphragm valve system to which the push button type manual valve 91 is attached, the push button type manual valve 91 is removed from the main body portion, and the portion is removed. By simply replacing the flush valve unit 50 with the flush toilet bowl, it is possible to change the flush valve apparatus for manual flushing flush toilets to an automatic flush flush valve apparatus with great ease.

  Further, according to the present invention, by devising the configuration of the water pressure control device 1, it is possible to adopt a self-holding solenoid valve that consumes less power. Therefore, driving with a small battery is possible. In addition, since battery consumption is small, battery replacement is not necessary for a plurality of years.

  In addition, according to the present invention, it is possible to eliminate the need for wiring of a household AC power supply by realizing driving with a small battery. As a result, it can be used in a place where there is no power source, and the appearance of the flush valve unit 50 for the toilet bowl can be improved.

  The water pressure control device 1 and the flush valve unit 50 according to the present invention are not only a push button type manual valve but also an existing diaphragm valve type flush valve device equipped with a handle type manual valve. Can be applied similarly.

  Moreover, the water pressure control apparatus 1 and the flush valve unit 50 for the flush toilet according to the present invention can be similarly applied not only to the diaphragm valve system but also to the existing flush valve apparatus for the flush toilet of the piston valve system.

It is the schematic which shows an example of the water pressure control apparatus which concerns on embodiment of this invention. It is the schematic which shows an example of the flush valve unit for flush toilets concerning embodiment of this invention. It is the schematic which shows the structure of the flush valve apparatus for flush toilets by the existing diaphragm valve system. It is the schematic which shows an example of the washing | cleaning valve apparatus for conventional push button type flush toilets. It is the schematic which shows an example of the flush valve unit for flush toilets which converts the washing valve apparatus for conventional pushbutton flush toilets into automatic flushing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water pressure control apparatus 2 Tip part 3 Base part 4 Base bottom part 5 Space part 6 Control chamber 7 O-ring 8 O-ring 9 O-ring 10 Flow path component 11 Removable screw part 12 Thread notch part 13 Inlet channel 14 Outlet channel 15 Pilot Valve seat 16 Base side surface 17 Base upper wall surface 20 Solenoid valve 21 Water seal portion 22 Armature 23 Pilot valve 24 Pilot valve front end surface 25 Energizing member 26 Electromagnet unit 50 Washing toilet unit for flush toilet 51 Inflow side flow channel 52 Main flow Path 53 Water outlet communication channel 54 Water inlet 55 Water outlet 56 Pressure holding communication channel 61 Diaphragm valve 62 Diaphragm valve valve seat 71 Casing 72 Electromagnetic valve driving battery 73 Control unit 74 Human body sensor 75 Casing support member 90 Main body 91 Push button type manual valve 92 Manual valve mounting screw part 93 Stop cock 95 Toilet bowl

Claims (4)

It is detachably mounted on the main body of the flush valve device for the flush toilet using the existing diaphragm valve system that opens and closes between the inflow side flow path and the main flow path of the main body by manual operation of the push button, and flows water when necessary. In the water pressure control device that replaces and installs with a push button type manual valve,
With a continuous tip and base, a space is provided inside, and a solenoid valve is coupled to the bottom of the base,
The tip portion is provided with an O-ring, and is fitted to a water outlet communication channel in the main body so as to seal a water flow from the pressure holding communication channel to the water outlet communication channel in the main body. ,
The space part is formed with a control chamber partitioned by a flow path component provided therein and a water seal part of the electromagnetic valve,
The base portion is provided with a detachable screw portion on the side surface of the base portion so as to be screwable with a screw portion for mounting the manual valve of the main body portion, and a water inlet passage communicating with the control chamber from the pressure holding communication channel is provided. And
The flow path component is provided with a water discharge path that communicates from the control chamber to the water outlet connection flow path, and the control chamber side tip of the water discharge path is formed as a pilot valve valve seat, Arranged on the same axis as the armature so as to be opposed to the tip surface of the pilot valve provided at the armature tip,
Normally, the pilot valve is brought into contact with the pilot valve valve seat, and when necessary, the pilot valve is separated from the pilot valve valve seat to control the water pressure in the pressure holding communication channel. A water pressure control device characterized by: It is detachably attached to the main body of the flush valve device for the flush toilet using the existing diaphragm valve system that opens and closes the inflow side flow path and the main flow path of the main body part by manual operation of the push button, and flows water when necessary. In the water pressure control device that replaces and installs with a push button type manual valve,
A continuous tip portion and a base portion are provided, a space portion is provided therein, and a solenoid valve that is a self-holding type and a drive power source is coupled to the bottom portion of the base portion,
The tip is provided with an O-ring and is fitted into a water outlet communication channel in the main body so that the water flow from the pressure holding communication channel to the water outlet communication channel in the main body can be sealed. And
The space part is formed with a control chamber partitioned by a flow path component provided therein and a water seal part of the electromagnetic valve,
The base portion is provided with a detachable screw portion on the side surface of the base portion so as to be screwable with a screw portion for attaching the manual valve of the main body portion, and a water inlet passage communicating with the control chamber from the pressure holding communication channel is provided. And
The flow path component is provided with a water discharge path that communicates from the control chamber to the water outlet connection flow path, and the control chamber side tip of the water discharge path is formed as a pilot valve valve seat, Arranged on the same axis as the armature so as to be opposed to the tip surface of the pilot valve provided at the armature tip,
Normally, the pilot valve is brought into contact with the pilot valve valve seat to maintain a constant water pressure in the pressure holding communication channel. When necessary, the pilot valve is connected to the pilot valve valve seat. A water pressure control device characterized in that a water flow from the pressure holding communication channel to the water outlet communication channel is generated by separating the pressure from the pressure holding communication channel to reduce the water pressure in the pressure holding communication channel. The hydraulic control device according to claim 1, wherein the attaching / detaching screw portion includes a thread notch portion over the entire length of the screw portion in the attaching / detaching direction. It is detachably mounted on the main body of the flush valve device for the flush toilet using the existing diaphragm valve system that opens and closes between the inflow side flow path and the main flow path of the main body by manual operation of the push button, and flows water when necessary. In the flush valve unit for flush toilets to be installed instead of the push button type manual valve,
The water pressure control device according to claim 2 is provided by being screwed to a portion of the main body portion from which the push button type manual valve is removed,
A casing containing a human body sensor for sensing a user of a toilet, a battery for driving an electromagnetic valve, and a control unit for controlling the driving of the electromagnetic valve in accordance with a signal from the human body sensor includes the water pressure control device. The flush valve unit for flush toilets is provided by being supported by either or both of the water pressure control device and the main body.

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