JPH08326131A - Safety device for sanitary washing device - Google Patents

Abstract

PURPOSE: To provide the hot water tank of a sanitary washing device with a safety valve for quickly alleviating abnormal water pressure applied to the tank. CONSTITUTION: A water pressure release hole 34 is drilled through the lower side of a hot water tank used for heating wash water up to a suitable temperature level and storing the water so heated. Also, a safety valve 33 having a valve seat 35 to open the hole 34, upon the exposure thereof to the internal water pressure of the tank equal to or above the preset value, is provided in the vicinity of a toilet body. When water pressure equal to or above the preset value is applied to the tank, the valve 33 opens and wash water in the tank is discharged to the toilet body via the drain passage of a drain cock 24 adjacent to the valve 33, thereby quickly discharging the water without any adverse effect of the splash thereof on an electrical part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing device for washing local parts of a human body, and its object is to prevent a hot water storage tank for storing hot water for washing from being damaged by a change in internal pressure. Safety device to avoid.

[0002]

2. Description of the Related Art Conventionally, sanitary washing devices have been constructed so that hot water stored in a hot water storage tank is heated to a proper temperature by using tap water pressure to jet hot water from a jet nozzle to wash a local part of a human body. The specific structure is disclosed in, for example, Japanese Patent Application Laid-Open No. 2-210125. And
The structure of the sanitary washing device disclosed in the above publication has a pressure reducing valve communicating with the water supply port, a solenoid valve installed on the downstream side thereof,
A flow rate control valve connected downstream of this solenoid valve to control the jetting amount of hot water, a safety valve equipped with a drain port, and a closed hot water storage tank that is connected to this safety valve and heats tap water to a certain temperature to store hot water. And a cleaning nozzle for injecting hot water in the hot water storage tank by, for example, tap water pressure.

In use, the pressure (water pressure) of the tap water flowing into the water supply port varies from 0.5 to 9 kgf / cm 2 depending on the region or the form of the house. Regulates the pressure to a predetermined set pressure so that the washing water can be jetted at a stable jet pressure, and then opens and closes the solenoid valve and adjusts and sets the amount of washing water supplied to the washing nozzle by the flow rate control valve. Wash water stored in the hot water tank at a suitable temperature from the nozzle,
The spray is constantly sprayed so that the user does not feel uncomfortable and the local area is cleaned.

[0004]

However, in the sanitary washing device having the above structure, for example, when the pressure reducing valve for adjusting the water pressure is malfunctioning due to a failure or the like, when the solenoid valve is opened, the water pressure is reduced. In this case, it may damage the sealed hot water storage tank by directly acting on it.
A situation is avoided in which a portion of the tap water supplied to the hot water storage tank from the drainage port of the safety valve is forcibly discharged, and the hot water storage tank is damaged due to unnecessary water pressure being applied to the hot water storage tank. It was

However, when tap water is drained from the drain port of the safety valve, the drained tap water is often installed at the end of the casing of the sanitary washing device because the safety valve allows water to pass through the sanitary washing device. Although it was made to flow down into the toilet from the central part of the casing through the drainage channel formed on the bottom surface of the casing that accommodates the tap water, as described above, due to the malfunction of the pressure reducing valve, the safety valve via the solenoid valve When discharged, tap water will overflow into the casing due to a considerable tap pressure, so some of the overflowed tap water may scatter to the electric parts arranged around the safety valve, or However, there was a problem of submerging the inside of the casing.

Further, when the tap water overflowing from the safety valve is drained well into the toilet, the safety valve is unitized together with the pressure reducing valve, the solenoid valve, and the flow control valve at the end of the casing because of the water flow. Since it is configured as a valve unit, a special drainage channel for smoothly draining overflow water is specially formed on the bottom surface of the casing, or
There is a problem in that a means for avoiding damage to electric parts due to overflow water is needed, such as connecting overflow pipes to the drainage port of the safety valve to draw out overflow water into the toilet bowl.

Further, since the safety valve for discharging the overflow water is formed integrally with the pressure reducing valve as the valve unit, the solenoid valve, etc., the valve unit itself becomes large in size as the number of parts increases, and The sanitary washing device must be equipped with a pressure reducing valve, such as providing a drainage channel for draining the overflow water in the casing, or directly connecting the safety valve and the drainage port on the casing side for draining the overflow water with a vinyl pipe. Since it is necessary to specially prepare a safety valve and a vinyl pipe etc. as a means for coping with malfunctions, not only the structure becomes complicated but also the size becomes large.
There is a problem that the number of assembling steps and the manufacturing cost increase.

In view of the above-mentioned various problems, the present invention provides a hot water storage tank for heating tap water (washing water) to an appropriate temperature, and has a simple safety valve in common with the water drain plug in proximity to the water drain plug. The hot water in the hot water storage tank, which is formed almost integrally using a cover body and flows out from the safety valve, is drained by using the drainage channel of the water draining plug, without damaging the hot water storage tank. It is an object of the present invention to provide a safety device for a sanitary washing device capable of easily escaping the water pressure applied to the hot water storage tank.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention communicates with the inside of a toilet bowl at the lower side of the front of a hot water storage tank made of a synthetic resin with excellent heat resistance incorporated in a casing. A drain valve having a large diameter (drainage drain) corresponding to the drainage channel and a water pressure relief hole having a small diameter are opened close to each other, and the water drain hole is provided with an opening / closing valve body for opening / closing the water drain hole. Is installed so that it can be moved back and forth, and a water drain plug is provided.On the other hand, a valve body that opens and closes the water pressure relief hole is loosely fitted in the water pressure relief hole, and the water drain plug is opened and closed outside these water drainage and water pressure relief holes. A cover body integrally formed with a drainage port that prevents the on-off valve body from protruding outside and communicates with the drainage hole of the drainage stopper, and a drainage cylinder that communicates with the water pressure relief hole. And attach it to the water pressure relief hole close to the drain tap of the hot water storage tank. The safety device of the hot water storage tank is configured by the safety valve, which is provided by inserting the compression spring for constantly biasing the valve main body toward the flow port side of the water pressure relief hole into the drain of the cover body. It is shown.

[0010]

According to the present invention, as described above, the water pressure relief hole is provided in the vicinity of the water draining tap of the hot water storage tank, and when the water pressure in the hot water storage tank rises above the predetermined value, the valve body is opened. Since the water pressure relief hole is opened by pushing the hot water tank, the hot water storage tank is equipped with a safety valve that drains the appropriate temperature water in the hot water storage tank to the drainage channel of the drain plug that communicates with the toilet bowl. Since the damage caused by the water pressure is prevented in advance, the harmful effects caused by the damage of the hot water storage tank can be surely removed. Moreover, by providing the safety valve in the hot water storage tank, when an abnormal water pressure is applied to the hot water storage tank, the appropriate temperature water in the hot water storage tank is immediately discharged into the toilet bowl using the drainage channel of the water drain plug. Since it is possible to release the abnormal water pressure applied to the tank, it is convenient because a special discharge passage for discharging the appropriate temperature water is not particularly required.

In addition, the water pressure relief hole of the safety valve can be closed together with the water drain hole of the water drain plug by the same cover body in a state where the valve body can be easily opened and closed. There is no need to provide a safety valve provided in the valve unit to protect against abnormal water pressure, a drainage means consisting of a vinyl pipe that leads the tap water overflowing from this safety valve into the toilet, or a special drainage channel. Since a safety device for protecting the hot water storage tank from abnormal water pressure can be provided with a simple structure, there is an advantage that the sanitary washing device can be economically manufactured with a simple structure.

Furthermore, since the water pressure relief hole used in the safety valve of the present invention is provided in the vicinity of the water drain hole of the water drain plug, abnormal water pressure is applied to the hot water storage tank to drain the appropriate temperature water in the tank. In this case, the appropriate temperature water can be immediately made to flow down into the toilet by using the drainage channel of the water drain hole, and the appropriate temperature water discharged from the water pressure relief hole adversely affects the electric parts near the hot water storage tank. Alternatively, the problem that the inside of the casing is submerged can be reliably solved.

[0013]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view showing a state in which a sanitary washing device equipped with the safety device of the present invention is installed on a toilet body. In FIG. 1, reference numeral 1 is a sanitary washing device installed using the upper back portion of the toilet body 2, and this sanitary washing device 1
The upper casing (only a part of which is shown in FIG. 1) 3a and the lower casing 3b are combined and provided with an internal space, and the lower casing 3b is fixed to the toilet body 2 and installed. A toilet seat and a toilet lid (not shown) are attached to the upper casing 3a so as to be openable and closable. The functional part of the sanitary washing device 1 includes, for example, a controller (not shown) in an operation panel 3c formed on the side portion of the upper casing 3a so as to project toward the front. The operation means 4 such as an operation switch for operating the functional portion of the cleaning device 1 is manually operated to operate.

Next, the inside of the sanitary washing device 1 will be described. Reference numeral 5 shown in FIG. 1 denotes a valve unit disposed between the hot water storage tank 6 and a water supply source (not shown) on the side of the upper casing 3a (left side in FIG. 1). The valve unit 5 has a water supply source (not shown) (for example, A water supply port) and a water pressure adjusting pressure reducing valve 5a connected via a connection hose, a waterway opening / closing solenoid valve 5b, and a flow rate adjusting valve (not shown). There is. The hot water storage tank 6 is shown in FIG.
Upper and lower cases 6a, 6b having hollow interiors as shown in FIG.
By heat welding the flanges 6c and 6d,
It is configured such that a predetermined amount of hot water can be stored in the internal cavity. Reference numeral 7 is a water pipe for connecting the solenoid valve 5b and a wash water inlet (see FIG. 3) 8 below the hot water storage tank 6 so that they can communicate with each other, and the wash water is stored in the hot water storage tank 6 by opening the solenoid valve 5b.
Supply to.

Next, the structure of the hot water storage tank 6 including the upper and lower cases 6a and 6b divided into the above two parts will be described with reference to FIGS. This hot water storage tank 6 is attached at a position on the left side from the center of the lower casing 3b shown in FIG. 1 in proximity to the valve unit 5, and the wash water in the hot water storage tank 6 is heated by the heater 9 and is heated by the temperature sensor 10. The hot water temperature is detected to generate hot water having a predetermined temperature (hereinafter referred to as appropriate hot water). Reference numeral 11 is a bimetal switch mounted on the upper part of the hot water storage tank 6 in the vicinity of the temperature sensor 10 to prevent overheating of the appropriate temperature water, and 12 is energized to the heater 9 only when the washing water in the hot water storage tank 6 is supplied in a fixed amount. This is a float switch to prevent heating of the wash water by heating the wash water.

Next, reference numeral 13 shown in FIG. 3 is an atmosphere opening / closing valve provided in the hot water outlet 14 at the upper part of the upper case 6a of the hot water storage tank 6, and an atmosphere communicating port 15 communicating with the atmosphere is provided above the opening / closing valve 13. An appropriate temperature water outlet 16 is opened in the side wall, and a valve body 18 that comes in contact with and separates from the valve seat 17 above the tap hole 14 is housed in the inside so that it can be moved up and down. And
When water of appropriate temperature flows out, the valve body 18 is pushed up by the water flow,
The atmosphere communication port 15 is closed by the valve body 18, and when the appropriate temperature water does not flow out, the valve body 18 descends by its own weight to close the hot water outlet 14, and the atmosphere communication port 15 is opened.

As shown in FIG. 1, the air communication port 15 has a drainage channel 1 at the tip for draining drain water from the hot water storage tank 6.
9, an air supply pipe 20 extending to 9 is connected, and a nozzle device 21 arranged on the right side of the hot water storage tank 6 is connected to the outflow port 16 via a hot water supply pipe 22 as shown in FIG. There is. Reference numeral 23 shown in FIG. 4 is a wave prevention plate having a large number of through holes 23a formed therein and mounted in the lower case 6b of the hot water storage tank 6, and the wash water flowing from the wash water inlet 8 into the hot water storage tank 6 is stored in the tank 6 Mixing with the appropriate temperature water caused by waviness inside is suppressed to prevent the temperature drop of the appropriate temperature water.

In FIG. 3, reference numeral 24 denotes a water drain plug provided on the lower side of the hot water storage tank 6 on the side opposite to the wash water inlet 8 (right side of FIG. 3), which opens in the hot water storage tank 6 as shown in FIGS. 5 and 8. The open / close valve body 26 for opening / closing the large-diameter drainage hole 25 (drainage drain) and the valve rod 27 fixed to the open / close valve body 26 by penetrating the open / close valve body 26 in the horizontal direction are provided. One end located inside 6 is the lower case 6 of the hot water storage tank 6.
b The other end (tip) that is inserted into and supported by a support seat 28 that projects on the bottom surface so as to be horizontally movable, and that projects to the outside of the drainage hole 25,
The opening / closing valve body 26 is inserted into and supported by a support frame 30a horizontally provided at the center of the drainage port 30 of the cover body 29, which will be described later, so that the on-off valve body 26 is drained from the drainage port 30 of the cover body 29.
The valve seat 31 formed inside is brought into contact with and separated from the valve seat 31. Reference numeral 32 is a spring member that biases the on-off valve body 26 toward the valve seat 31.

Further, 33 shown in FIG. 3 is the drain plug 24.
It is a safety valve installed next to, as shown in Figs.
A small-diameter water pressure relief hole 34 opened in the hot water storage tank 6 so as to communicate with the water drainage hole 25, and a valve body 35 for opening the water pressure relief hole 34 when the water pressure in the hot water storage tank 6 reaches a predetermined water pressure. The valve body 35 includes a cover body 29 having the drainage port 30 formed therein, and a drain pipe 36 having a small diameter formed integrally with the cover body 29 in parallel with the drainage port 30 at one end. By engaging the other end of the compression spring 37 inserted in the stopped state, the valve main body 35 is kept in the compression spring 37 at all times.
Is applied to the water pressure relief hole 34 side to close the water pressure relief hole 34 with a required load. Reference numeral 38 denotes a drain nozzle formed at the tip of the drain tube 36 toward the drain path 19 side.

The cover body 29 described above is provided with a drain port 30 communicating with the drain hole 25 of the drain plug 24, and a drain cylinder 36 communicating with the water pressure relief hole 34 of the safety valve 33, respectively. As shown in FIG.
No. 0, the water pressure relief hole 34 and the drain pipe 36 are made to correspond to each other and are fixed to the hot water storage tank 6 by using a screw member.
As a result, the constant water drain plug 24 is provided with the opening / closing valve body 26 for the drain port 30, and the safety valve 33 is provided with the valve body 35 for the water pressure relief hole 34.
Are closed respectively. In addition, 39 shown in FIG. 1 is an operating rod for pushing the valve rod 27 of the water drain plug 24 from the outside. Further, reference numeral 40 shown in FIG. 1 is a warm air device for drying the locally cleaned portion.

Next, the operation will be described. First, when the local cleaning is not performed, the cleaning water in the hot water storage tank 6 is heated by the heater 9 and the temperature sensor 10 detects the temperature of the hot water.
It is controlled so as to interlock with a controller (not shown) to obtain appropriate temperature water having a predetermined temperature. At this time, the valve element 18 of the atmosphere opening / closing valve 13 descends to cause the hot water outlet 1 above the hot water storage tank 6
4 is closed, and conversely, the atmosphere communication port 15 is opened. Therefore, since the atmosphere communication port 15 and the suitable temperature water outlet 16 are open to the atmosphere, the residual water in the nozzle device 21 can be satisfactorily discharged, and the residual water in the nozzle device 21 should not be discharged. When the reverse flow of 22 flows into the atmosphere open / close valve 13, the residual water does not flow back into the hot water storage tank 6 because the hot water outlet 14 is closed by the valve body 18 as shown in FIG. It is discharged from the atmosphere communication port 15 through the air supply pipe 20 to the drainage channel 19, and flows down into the toilet body 2.

Next, the case of cleaning the local area will be described. From the operation means 4 provided with the respective operation switches for operating the functional units arranged on the operation panel 3c, for example, the washing switch is manually operated to open the solenoid valve 5b, and the hot water storage tank 6
The cleaning water depressurized to a predetermined water pressure flows in through the inflow port 8. By the inflow of the wash water, the appropriate temperature water in the hot water storage tank 6 is pushed up by the inflow amount of the wash water, and the valve body 18 is moved upward to close the atmosphere communication port 15 and simultaneously open the hot water outlet port 14,
The appropriate temperature water pushed up is the outlet 1 of the atmosphere opening / closing valve 13.
6 through the hot water supply pipe 22 to the nozzle device 21,
A cleaning nozzle (not shown) in the nozzle device 21 is, for example,
The appropriate temperature of the hot water that is passed through the nozzle device 21 is used to project into the toilet body 2, and the appropriate temperature of the water that is passed through the nozzle device 21 is jetted from the washing nozzle to wash the local area.

After cleaning the local area, the stop switch is operated from the operation means 4 to close the electromagnetic valve 5b of the valve unit 5. Since the wash water does not flow into the hot water storage tank 6 due to the closing of the solenoid valve 5b, the valve body 18 of the atmosphere opening / closing valve 13 descends to close the hot water outlet 14, and conversely opens the atmosphere communication port 15. For this reason, the air flowing in from the air supply pipe 20 flows into the nozzle device 21 through the outlet 16 of the appropriate temperature water, and the appropriate temperature water remaining in the nozzle device 21 is eliminated by the disappearance of the water pressure due to the stop of the passage of water. The toilet body 2 is released from the ejection port of a cleaning nozzle (not shown) that is released from the pressure and retracts into the nozzle device 21.
Discharge inside. If residual water flows back into the atmosphere opening / closing valve 13 while the cleaning nozzle is retreating, the outlet 14 is closed by the valve body 18, so the backflow water is supplied to the air supply pipe 2
The water is drained into the toilet body 2 through the 0 → drainage channel 19.

If the pressure reducing valve 5a of the valve unit 5 malfunctions and the water pressure of the tap water cannot be controlled while the local area is being washed, the water pressure of the tap water is directly stored in the hot water storage tank 6. In addition, when the appropriate temperature water is jetted from the nozzle device 21, the jet amount thereof also rises sharply. As described above, when the water pressure in the hot water storage tank 6 reaches or exceeds the preset pressure, as shown in FIG. 7, the valve body 35 of the safety valve 33 provided in the lower case 6b of the hot water storage tank 6 causes the compression spring 37 to move. It is pushed to the left in FIG. 7 against the force to open the water pressure relief hole 34. Therefore, the wash water that has flowed into the hot water storage tank 6 passes through the water pressure relief hole 34 → the drain pipe 36 → the drain nozzle 38 in FIG. 7, flows down to the drainage channel 19 as shown in FIG. 1, and is drained into the toilet body 2. It

As described above, when the valve body 35 of the safety valve 33 is retracted by the water pressure in the hot water storage tank 6, the valve body 35 is partially circumferentially arranged around the opening end of the drain pipe 36 located on the valve body 35 side. As a result of being received by and retained by the stop projection 41 provided on the valve, the wash water flowing out from the water pressure relief hole 34 is discharged from the periphery of the valve body 35 to the rear end of the valve body 35 as shown by the arrow in FIG. Gap 4 formed between the stopper projection 41
Since the safety valve 33 is configured so as to flow into the drainage pipe 36 through 2, the wash water flows out from the drainage pipe 36 due to the abnormal water pressure in the hot water storage tank 6, and the splash water is scattered and sanitary wash. It is possible to surely avoid a situation in which the device is attached to an electric component that constitutes a functional part of the device 1 and has an adverse effect.

Further, since the drain nozzle 38 formed at the tip of the drain pipe 36 is formed to have a smaller diameter than the drain pipe 36, it is possible to prevent the washing water from suddenly spouting from the drain pipe 36. As a result, it is possible to satisfactorily avoid the harmful effects caused by the sudden injection of the cleaning water.
Moreover, when a water pressure higher than a preset value is applied to the hot water storage tank 6, a part of the abnormal water pressure can be escaped to the outside by the safety valve 33, and the appropriate temperature water in the hot water storage tank 6 can be discharged to the nozzle. Since the water is rapidly discharged to the device 21 side and the appropriate pressure water is jetted from the washing nozzle (not shown) of the nozzle device 21 by increasing the jet pressure as compared with the normal time, the abnormal pressure of the hot water storage tank 6 is discharged to the safety valve 3
3 can be shared and discharged reliably.

As described above, when the abnormal water pressure is applied to the hot water storage tank 6, most of the abnormal water pressure can be satisfactorily discharged from the safety valve 33 and the cleaning nozzle, and the injection pressure of the appropriate temperature water from the nozzle device 21 is increased. Therefore, the user of the sanitary washing device 1 notices an abnormal state due to the jetting of the appropriate temperature water with a jet pressure stronger than normal, and immediately turns on the stop switch from the operating means 4 to turn on the solenoid valve 5b. By closing, it is possible to prevent the wash water from flowing into the hot water storage tank 6, so that it is possible to favorably prevent abnormal pressure from acting on the hot water storage tank 6.

As a result, the safety valve 33 is formed so that when abnormal water pressure is applied to the hot water storage tank 6, the wash water is appropriately discharged within a range where the hot water storage tank 6 is not damaged and the abnormal water pressure in the tank 6 is reduced. Therefore, it is possible to favorably prevent damage to the hot water storage tank 6, and it is possible to reliably avoid the waste of rinsing the wash water unnecessarily.

Next, when water is drained from the hot water storage tank 6 as needed, that is, when the hot water storage tank 6 is prevented from freezing in a severe cold condition or is not used for a long period of time, as shown in FIG.
The operating rod 39 shown in FIG. 2 is rotated from the outside toward the valve rod 27 side of the water drain plug 24 (counterclockwise direction in FIG. 1) with the support portion a of the operating rod 39 as a fulcrum through a connecting rod (not shown). Valve rod 2
As shown in FIG. 9, 7 is pushed inward of the hot water storage tank 6 against the load of the spring member 32. When the valve rod 27 is pushed, the opening / closing valve body 26 separates from the valve seat 31 and opens the drain port 30. Therefore, the water drainage hole 25 on the hot water storage tank 6 side and the drainage port 30 of the cover body 29 communicate with each other except for the support frame 30a, so that the water in the hot water storage tank 6 passes from the water drainage hole 25 through the drainage port 30. It flows down to the drainage channel 19 and is drained to the toilet body 2.

At this time, since the valve body 18 of the atmosphere opening / closing valve 13 closes the hot water outlet port 14 at the upper portion of the hot water storage tank 6, the air does not flow into the hot water storage tank 6, but the cover body 29.
The drainage port 30 formed in the water drainage hole 25 of the hot water storage tank 6
By making the size close to the same diameter as that of the drainage port 30 and increasing the dimension in the height direction, a difference in the water head pressure occurs in the vertical direction of the drainage port 30, and due to this difference in the water head pressure, air is discharged from the drainage port 3
As a result of flowing into the hot water storage tank 6 from the upper side of 0, the water in the hot water storage tank 6 can be satisfactorily drained from the drain port 30 even if the atmosphere opening / closing valve 13 is closed.

After the drainage of the hot water storage tank 6 is completed, the operating rod 39 is returned to its original position, and the external force applied to the valve rod 27 disappears. It is pushed to the left side in FIG. 8 by the urging force of the spring member 32, and the opening / closing valve body 26 is brought into contact with the valve seat 31 so that the drainage port 30 is discharged.
To close. The operating rod 39 for operating the valve rod 27 of the water drain plug 24 is operated, for example, by removing the upper casing 3a of the sanitary washing device 1 as described above, or operating a connecting rod (not shown). And the operating rod 39 may be operated by operating this connecting rod from the outside of the lower casing 3b.

[0032]

As described above, according to the present invention, since the safety valve which is opened by the water pressure in the hot water storage tank when the water pressure in the hot water storage tank reaches or exceeds the set value, is attached to the lower portion of the hot water storage tank for storing the appropriate temperature water for local cleaning. Even if an abnormal water pressure is applied to the hot water storage tank, the safety valve can favorably reduce the abnormal water pressure. Therefore, the hot water storage tank can be well protected from damage due to the abnormal water pressure.

Moreover, the safety valve has a structure in which the water pressure relief hole opened at the bottom of the hot water storage tank is opened and closed by the valve body, and the safety valve itself is provided in the vicinity of the toilet body, so that there is an abnormality in the hot water storage tank. When water pressure is applied, the water in the hot water storage tank can be drained directly into the toilet body without forming a special drainage channel or using a drainage means such as a vinyl pipe as in the past. In addition to the simplified structure of the safety valve, the water in the hot water storage tank can be drained without adversely affecting the electric parts of the sanitary washing device, so a sanitary washing device with excellent safety can be constructed with a simple structure. It can be manufactured economically.

Further, according to the present invention, a drain plug is provided adjacent to a safety valve for releasing an abnormal water pressure in the hot water storage tank,
The water drain plug can drain water drained from the safety valve into the hot water storage tank by using a common drainage path near the toilet body. Moreover, like the drainage from the safety valve, the hot water storage tank can be drained at a position close to the toilet body, so the water drained into the toilet body will scatter when draining water.
There is an advantage that it is possible to surely avoid the adverse effect that the electric parts of the sanitary washing device are adversely affected.

[Brief description of drawings]

FIG. 1 is a plan view showing the inside of a sanitary washing device equipped with a safety device of the present invention.

FIG. 2 is a plan view of a hot water storage tank equipped with the safety device of the present invention.

FIG. 3 is a front view showing a hot water storage tank partially broken away.

FIG. 4 is a vertical sectional side view of a main part of the hot water storage tank.

FIG. 5 is a cross-sectional view showing a safety device of the present invention attached to a hot water storage tank, and a drain plug provided in parallel with this safety device.

FIG. 6 is a vertical cross-sectional view showing a state before the operation of the safety device of the present invention.

FIG. 7 is a vertical sectional view showing an operating state of the safety device.

FIG. 8 is a vertical cross-sectional view showing a state before the operation of the water drain plug.

FIG. 9 is a vertical cross-sectional view showing an operating state of the water drain plug.

[Explanation of symbols]

 1 Sanitary Cleaning Device 2 Toilet Body 6 Hot Water Storage Tank 21 Nozzle Device 24 Draining Plug 25 Draining Hole 26 Opening / Closing Valve Body 29 Cover Body 33 Safety Valve 34 Water Pressure Relief Hole 35 Valve Body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Mitsuhiro Higuchi Inventor, Mitsuhiro Higuchi, 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Totoki Equipment Co., Ltd. (72) Masaaki Niimi 1 Aichi, Kasugai-shi, Aichi Aichi Electric Co., Ltd. (72) Inventor Shuichi Hirano 1 Aichi-cho, Kasugai-shi, Aichi Aichi Electric Co., Ltd.

Claims (2)

[Claims] 1. A sanitary washing device, comprising: a functional portion for fixing a part of a toilet body on a back upper surface of the toilet body, and a hot water storage tank for heating and washing hot water supplied to the functional portion to an appropriate temperature. A sanitary cleaning characterized in that a safety valve composed of a water pressure relief hole opened at the bottom of the tank and a valve body that opens this water pressure relief hole when the water pressure in the hot water storage tank reaches a set value or more Device safety device. 2. A sanitary washing device, comprising: a functional portion for locally cleaning fixed to the upper surface of the back of a toilet seat body; and a hot water storage tank for heating and storing hot water supplied to this functional portion to an appropriate temperature. A safety valve composed of a water pressure relief hole opened in the lower part of the tank and a valve body that opens this water pressure relief hole when the water pressure in the hot water storage tank reaches a set value or more, and a side of the safety valve of the hot water storage tank. A sanitary washing characterized in that a water drain hole having a diameter larger than that of the water pressure relief hole opened at the end and a water drain plug constituted by an on-off valve body for opening and closing the water drain hole as necessary are attached. Device safety device.