WO2012101847A1

WO2012101847A1 - Portable toilet

Info

Publication number: WO2012101847A1
Application number: PCT/JP2011/067376
Authority: WO
Inventors: 徳永剛一; 藤川昌
Original assignee: 三洋電機株式会社; テガ三洋工業株式会社
Priority date: 2011-01-27
Filing date: 2011-07-22
Publication date: 2012-08-02

Abstract

Space efficiency is increased, electrical power consumption is reduced, and a pump unit that governs the discharge of warm water from a nozzle unit is caused to be more compact when configuring this portable toilet, in which a warm-water-washing toilet seat is provided to the seat section, a fecal collection tray is provided beneath the warm-water-washing toilet seat, and a water-supply tank and a warm-water tank are disposed at the back-surface portion of a seat back, and which is provided with portability by means of the water supply opening of the water-supply tank being connected to the water-receiving opening of the warm-water tank and the hydrostatic pressure of the water supplied from the water-supply tank extending to the warm water of the warm-water tank when the water-supply tank is disposed above the warm-water tank. Furthermore, a water-supply hose for aspiration of water supplied from the water-supply tank is unnecessary, causing the attachment/removal of the water-supply tank to be easy, and thus the task of replenishing the water-supply tank with water to be supplied becomes simple.

Description

Portable toilet

The present invention has a hot water cleaning function for heating the makeup water supplied from the water supply tank in the warm water tank to generate warm water, and spraying the warm water from the nozzle to wash the local area of the buttocks of the person seated on the toilet seat. It relates to portable portable toilets.

Since stool processing is an important daily task for seriously ill patients who are sick or senile, there is a tendency to place a portable toilet with a simple configuration near the bed. Even in this case, it is required that the buttocks can be locally cleaned, and a portable toilet equipped with a hot water cleaning nozzle has been proposed (for example, Patent Document 1).
The purpose of the portable toilet disclosed in Patent Document 1 is to reduce the weight of the portable toilet by allowing the bucket to be taken out while avoiding interference between the bucket for storing excrement and the nozzle and guide plate of the cleaning device. To do.

JP 2008-73094 A

By the way, in portable toilets equipped with a hot water washing function, it is important to store excreta, but improvement of a water supply tank serving as a hot water supply source is also an important issue. That is, in general households and the like, the hot water flush toilet seat device arranged on the flange of a flush toilet bowl always supplies tap water from a water conduit connected to the tap water pipe. Does not require consideration for replenishment. Moreover, since the injection of hot water from the washing nozzle uses the water pressure of tap water, a special motor and pump for injecting hot water are not required.
However, in a general portable toilet that is not connected to the tap water pipe, the supply of water is exclusively from the water tank, so the upper limit of the number of uses will be determined by the amount of water stored in the water tank, It is necessary to replenish the makeup water in the water supply tank before it drains. However, it is troublesome for a caregiver as well as a sick person to always know the remaining amount of makeup water in the water tank and be aware of the replenishment time. In particular, it is very difficult for seriously ill and seriously injured people to manage portable toilets. In such a situation, if the management falls, and the supply water in the water supply tank is exhausted due to forgetting, the hot water in the hot water tank also decreases. As a result, the temperature of the hot water in the hot water tank rises and there is a risk of being burned by hot water.
Further, in the conventional portable toilet that cannot use the water pressure of tap water, the water supply tank T1 and the hot water tank T2 are completely separated as shown in FIG. While the discharge side of the pump is connected to the hot water tank T2, the suction side faces the water supply tank T1 as shown in FIG.
In the conventional portable toilet configured as described above, when the start of cleaning is instructed, the water supply pump P operates to suck in the makeup water in the water tank T1, and the suctioned makeup water is supplied to the hot water tank T2. Supplied. As a result, the water pressure in the hot water tank rises, the hot water is supplied to the buttocks washing nozzle A or the bidet washing nozzle B via the washing water switching unit E, and the hot water is jetted from the tip.
By being configured in this way, the water supply pump P increases the ability to suck up makeup water from the water supply tank T1 and the pressure in the hot water tank T2, so that hot water can be injected from the nozzles A and B. Therefore, there is a problem that the pump unit including the motor is enlarged, space efficiency is reduced, and power consumption is increased. Further, since the water supply hose H is connected to the water supply tank T1, when removing the water supply tank T1 from the main body for replenishment of makeup water, the water supply hose H is removed from the water supply tank T1, and after replenishment of makeup water, The troublesome work of having to attach the water supply hose H to the water supply tank T1 is required.
By the way, in the case of the above configuration employing the water supply tank, the hydrostatic pressure of the makeup water in the water supply tank reaches the hot water in the hot water tank, and this hydrostatic pressure works to urge the injection of hot water from the nozzle. As a result, a pump unit having a small driving capability can be employed, and therefore the pump unit can be reduced in size and power can be saved. Therefore, the driving capability of the pump unit is determined based on the maximum hydrostatic pressure obtained when the water supply tank is replenished with the maximum amount of makeup water.
In this way, when the drive capacity of the pump unit is made to correspond to the state where the hydrostatic pressure is maximized and the injection of hot water from the nozzle is ideal, the hydrostatic pressure gradually decreases as cleaning is repeated. become. That is, if the level of the makeup water in the water supply tank decreases, the jet power of the hot water from the nozzle also decreases, and sufficient cleaning cannot be performed. The hot water injection state must be constant.

In the present invention, a portable toilet is provided with a warm water washing toilet seat in a seating portion, a defecation collection tray is provided below the warm water washing toilet seat, and a water supply tank and a hot water tank are arranged on the back side of the backrest, When the water supply tank is arranged above the hot water tank, the water supply port of the water supply tank and the water supply port of the hot water tank are connected so that the hydrostatic pressure of the makeup water of the water supply tank reaches the hot water of the hot water tank. It is said.
Further, a negative pressure release valve is provided in the water supply tank, and a negative pressure release valve is provided that can prevent leakage of makeup water when the water supply tank is detached from the hot water tank and reversed.

According to the present invention, when the water supply tank is arranged above the hot water tank, the make-up water in the water supply tank flows into the hot water tank, so that the hydrostatic pressure of the make-up water in the water supply tank reaches the hot water in the hot water tank. It becomes like this. That is, since the hot water in the hot water tank is always urged in the discharge direction, it is possible to reduce the power energy required to inject the hot water from the buttocks washing nozzle or the bidet washing nozzle. The unit can be miniaturized and the cost can be reduced. At the same time, the power consumption of the pump unit is reduced and the space efficiency can be improved. In addition, since a water supply hose for sucking makeup water from the water tank is not required, the water tank can be easily attached and detached, and the portability is excellent. It will be a thing.
Moreover, the problem that the negative pressure inside the water supply tank increases as the makeup water is replenished and the hydrostatic pressure received by the hot water gradually decreases can be solved by providing a negative pressure destruction valve. Furthermore, when replenishing makeup water to the water supply tank, a negative pressure release valve was constructed so that the supply water would not leak when the water tank was turned upside down. The situation of dripping can be avoided.

FIG. 1 is a front perspective view showing the appearance of the portable toilet of the present invention.
FIG. 2 is a rear perspective view showing the appearance of the portable toilet of the present invention.
FIG. 3 is a plan view showing the configuration of the main part of the present invention.
FIG. 4 is a partial cross-sectional view showing a configuration of a main part of the present invention.
FIG. 5 is a partial cross-sectional view showing a configuration of a main part of the present invention.
6 (A) and 6 (B) are cross-sectional views showing the structure of further essential parts of the present invention.
FIG. 7 is a perspective view showing a configuration of a main part of the present invention.
FIG. 8 is a perspective view showing a configuration of a main part of the present invention.
FIG. 9 is a perspective view showing an assembled state of the main part of the present invention.
FIG. 10 is a cross-sectional view showing the configuration of the hot water tank of the present invention.
FIG. 11 is a cross-sectional view showing a joined state of the hot water tank and the water supply tank of the present invention.
FIG. 12 is a perspective view of a nozzle unit employed in the present invention.
FIG. 13 is a perspective view of a nozzle unit employed in the present invention.
FIG. 14 is a cross-sectional view of the washing water switching unit employed in the present invention.
15A and 15B are cross-sectional views of the nozzle unit employed in the present invention.
FIG. 16 is an exploded perspective view of the washing water switching unit employed in the present invention.
FIG. 17 is a diagram illustrating an example of an operation unit employed in the present invention.
FIG. 18 is a diagram illustrating an example of a control circuit employed in the present invention.
FIG. 19 is a diagram illustrating the control flow of the pump unit in the present invention.
FIG. 20 is a diagram illustrating a control mode of the pump unit in the present invention.
FIG. 21 is a diagram for explaining the outline of the water circuit of the portable toilet of the present invention.
FIG. 22 is a diagram illustrating an outline of a water circuit of a conventional portable toilet.

Embodiments of the present invention will be described below with reference to the drawings. A portable toilet 1 according to the present invention has a chair-like form in which a seat is supported by four legs in the same manner as a known portable toilet. FIG. 1 is a front perspective view, and FIG. 2 is a rear perspective view. As shown in the figures, support legs 3 are provided at the four corners of a base 2 having an opening 2a at the center so that it can stand on its own.
On the bottom surface of the pedestal 2, a stool detachable defecation storage tray 4 is disposed so as to cover the entire surface of the opening 2a of the pedestal 2 so that the stored defecation can be processed. The armrest pipe 5 erected on the top of the support leg 3 provided on both sides of the front end of the pedestal 2 is bent as shown in FIGS. 1 and 2 toward the rear of the pedestal 2, and the seated human body A backrest 6 is disposed at a portion corresponding to the back. On the other hand, an anchor pipe 8 bent in a substantially U-shape is erected on the top of the support leg 3 provided on both sides of the rear end of the base 2. Further, on the upper surface of the pedestal 2, a toilet seat 7 that is electrically operated and opens and closes in the vertical direction is disposed.
The main part of the portable toilet 1 of the present invention is configured as described above, but the functional elements required for the cleaning process and the like are arranged in a concentrated manner at positions corresponding to the back of the seated human body and the back of the buttocks. I have to. 3 to 11 are views showing the arrangement of the functional elements, and the hot water tank 9 is arranged and fixed at the left corner of the base 2 as shown in FIG.
As shown in the sectional view of FIG. 4, the hot water tank 9 has an electric heater 10 for generating hot water therein, a float switch 11 for obtaining an electric signal for detecting shortage of hot water, and the hot water is maintained at an appropriate temperature. The thermistor 12 for obtaining the electrical signal for the purpose is a sealed hollow body with a built-in water inlet 9A at the top. The water receiving port 9A is opened as shown in FIG. 10, the upper end is expanded outwardly to form a tapered surface, the base has an annular flange 9a integrated with the hot water tank 9, and is formed at the center. A through hole 9b is formed at the base of the protruding portion 9c. The through hole 9b communicates with the inside of a cylindrical lead pipe 9d that hangs down from the center of the water receiving port 9A into the hot water tank 9.
Accordingly, the makeup water supplied to the water receiving port 9A flows into the lead pipe 9d through the through hole 9b, and the makeup water is supplied from the opening of the lead pipe 9d facing the bottom surface of the hot water tank 9. become. Since it is configured in this way, the temperature-adjusted hot water staying in the upper layer portion in the hot water tank 9 and the low-temperature replenishing water do not cross each other, and hot water having an appropriate temperature can be supplied to the nozzle unit. it can.
The upper side surface of the hot water tank 9 is provided with an outflow pipe 9e so that the hot water heated by the electric heater 10 can flow out of the hot water tank 9. This outflow pipe 9e may be provided in the middle of the hot water tank 9, as shown in FIG. Thus, by providing the outflow pipe 9e in the middle of the hot water tank 9, the hot water staying in the upper layer than the outflow pipe 9e can be used for washing. Even when the shortage is notified, the hot water staying in the upper layer can be washed several times, and the occurrence of the trouble that the cleaning function is stopped simultaneously with the notification of the shortage of hot water can be prevented. .
In the present invention, the portable toilet 1 is configured such that a water supply tank 20 to be described later is disposed on the hot water tank 9, and the annular flange 9a of the water receiving port 9A of the hot water tank 9 and the annular flange of the water supply port 20A of the water supply tank 20 are arranged. In this case, the hydrostatic pressure of the makeup water in the water supply tank 20 is concentrated on the water supply port 20A. Accordingly, in order to cope with this hydrostatic pressure, the packing 13 is disposed on the inner periphery of the base of the annular flange 9a, and when the annular flange 22a of the cap body 22 of the water supply tank 20 is mounted, the tip of the annular flange 22a is The packing 13 is crushed to obtain a watertight state and prevent leakage of makeup water.
In order to pump hot water to the outflow pipe 9e of the hot water tank 9 thus configured and the nozzle unit NU, the suction pipe 14a of the pump unit 14 configured by combining a pump (gear pump) and an electric motor is a flexible tube. On the other hand, the discharge pipe 14 b is similarly connected to the washing water switching unit SU by the flexible tube 16. Two

flexible tubes

18 and 19 are connected to the nozzle unit NU from the washing water switching unit SU. The flexible tube 18 supplies hot water to the bidet washing nozzle side of the nozzle unit NU, and the flexible tube 19 supplies hot water to the buttocks washing nozzle side.
Next, the configuration of the water supply tank 20 will be described in detail. The water supply tank 20 is a hollow body made of, for example, a synthetic resin blow molding, and includes a negative pressure breaking valve 21 for eliminating the negative pressure generated as the makeup water decreases. As shown in FIGS. 6 (A) and 6 (B), the negative pressure release valve 21 shown in FIG. 5 has a structure in which a steel ball 21b rides on a coil spring 21a and is housed in a casing. Vent holes 21c and 21e are formed in the casing above the steel ball 21b.
Since the negative pressure release valve 21 employed in the present invention is configured as described above, in the state where the water supply tank 20 is connected to the hot water tank 9 as shown in FIG. Thus, the coil spring 21a is contracted downward by the weight of the steel ball 21b, and the air vent 21c is opened. Thereby, the atmospheric | air pressure of the inside of the warm water tank 9 and the exterior becomes the same, and generation | occurrence | production of a negative pressure can be prevented. On the other hand, when the water supply tank 20 is removed from the hot water tank 9 and the top and bottom are reversed so that the pressure release valve 21 is located downward, the steel ball 21b is vented by the restoring force of the coil spring 21a as shown in FIG. The air hole 21c is closed by being pushed in the direction of 21c and sealed by the packing 21d. As a result, the water supply tank 20 becomes watertight, and even if it is carried upside down from the state shown in FIG. 5, the makeup water contained in the water supply tank 20 does not leak out.
As shown in FIG. 11, the structure of the water supply port 20A of the water supply tank 20 is formed with a screw flange 20a projecting to the outside at the bottom, and includes a cap body 22 that is screwed to the screw flange 20a. . The cap body 22 includes an annular flange 22 a extending from a flat surface, and the annular flange 22 a is fitted to the annular flange 9 a of the water receiving port 9 A of the hot water tank 9. The central portion of the flat surface is provided with a bearing portion 22c having a through hole 22b formed around it, and a valve receiving flange 22d is formed so as to surround the outer periphery of the through hole 22b.
A spindle 23 is inserted through the bearing 22c, and a closing valve 24 is provided at the tip of the bearing 22c so as to be in close contact with the opening of the valve receiving flange 22d. On the other hand, a compression coil spring 25 is provided between the bearing 22c and the flange 23a at the end of the spindle 23, and urges the closing valve 24 in a direction to close the valve receiving flange 22d.
That is, in the state shown in FIG. 11, the spindle 23 is pushed up by abutting against the protruding portion 9c of the water receiving port 9A of the hot water tank 9, so that the shutoff valve 24 opens the opening of the valve receiving flange 22d and opens the water supply tank 20 The replenishment water is allowed to flow into the hot water tank 9. When the water supply tank 20 is detached from the hot water tank 9 from such a state, the compression coil spring 25 is actuated to lower the spindle 23, and the closing valve 24 closes the opening of the valve receiving flange 22d, thereby preventing the supply water from flowing out. .
When the water supply tank 20 is detached from the hot water tank 9, the makeup water remains in the annular flange 22 a of the cap body 22 of the water supply tank 20. Leak. In order to reliably prevent the leaked makeup water from leaking out of the hot water tank 9, the annular flange 9a of the hot water tank 9 is made to be as high as possible than the annular flange 22a of the cap body 22 of the water supply tank 20, or As shown in FIG. 11, a thick portion 22 e may be provided in the annular flange 22 a so that the space capacity inside the annular flange 22 a is relatively smaller than the space capacity inside the annular flange 9 a of the hot water tank 9.
In the water tank 20 having the above configuration, the packing 26 is attached to the opening of the annular flange 22a, the packing 27 is attached to the flat portion of the cap body 22 corresponding thereto, and the flange of the attached strainer 28 is attached to both

packings

26, 27. Hold to prevent leakage of makeup water. When replenishing the water supply tank 20 with makeup water, the top of the detached water supply tank 20 is inverted, the cap body 22 is rotated to disengage the screw flange 20a, and the strainer 28 is taken out to remove the screw. Water can be injected from the opening of the flange 20a. In addition, by sterilizing the strainer 28 with a disinfectant, it is possible to disinfect the makeup water.
As described above, the shortage of hot water in the hot water tank 9 can be detected by the float switch 11, but a configuration for detecting this when the supplementary water in the water supply tank 20 is insufficient will be described below. As shown in FIG. 5, a floating unit 29 is disposed at the bottom of the water supply tank 20. Inside the floating unit 29, there is provided a float 29a that moves up and down in synchronization with the water level of the makeup water, and a permanent magnet 29b is provided on the float 29a. On the other hand, the magnetic sensitive element 30 is provided on the back surface facing the floating unit 29 of the casing 31 that houses each mechanism element on the hot water tank 9 side.
By configuring in this way, makeup water in the water supply tank 20 is consumed, and when the float 29a and the permanent magnet 29b descend in synchronization with the drop in the water level, the influence of the magnetic force exerted on the magnetic sensing element 30 Gradually increases, and an electric signal can be obtained from the magnetically sensitive element 30. When the electrical signal obtained from the magnetic sensitive element 30 exceeds a threshold value by an electric circuit process in the control unit 91 to be described later, or an indicator is turned on by an on / off signal by a reed switch so as to notify the shortage of makeup water. However, a plurality of indicators may be turned on sequentially in accordance with the magnitude of the magnetic force so as to visualize the degree of lack of makeup water.
In addition, in the case where the hot water is quantitatively injected (about 500 cc) in one cleaning, for example, in the case of identifying and displaying by an indicator so that the number of possible cleanings is the final two times and the final one time, When the electric signal obtained from the magnetic sensitive element 30 output corresponding to the remaining amount of hot water for two times exceeds a set threshold, the indicator (LED 81) is turned on. Then, cleaning is performed in this state, and the indicator is blinked when the electrical signal obtained from the magnetic sensitive element 30 output corresponding to one hot water remaining exceeds a set threshold value. In this way, the indicator is turned on and blinked to identify and display, so that the shortage of makeup water can be accurately notified, and the user's attention can be effectively evoked. The identification display by the indicator is not limited to lighting and blinking, and the emission color may be different.
In the above example, a two-stage threshold is set for the electric signal obtained from the magnetic sensitive element 30. However, in the case of using a reed switch, the permanent magnet 29b of the floating unit 29 can be washed a number of times. The reed switch that operates when reaching the position corresponding to the last two remaining hot water and the permanent magnet 29b operates when reaching the position corresponding to the last remaining hot water remaining of the number of times that cleaning is possible. The electrical signal obtained by the reed switch can turn on and blink the indicator.
Further, the remaining amount of hot water can be detected by detecting the water pressure in the hot water tank 9, and a pressure sensor 17 is provided in the hot water tank 9 as shown in FIG. The water pressure in the tank 9 is detected. That is, when the hydrostatic pressure decreases with the reduction of makeup water in the water supply tank 20, the water pressure in the hot water tank 9 also decreases. Therefore, the pressure sensor 17 detects the water pressure corresponding to the last remaining hot water remaining twice, and when the electric signal exceeds the set threshold value, the indicator is turned on. In this state, cleaning is performed, and the pressure sensor 17 detects the water pressure corresponding to the remaining amount of hot water for one time. When the electric signal exceeds the set threshold, the indicator blinks to notify the lack of makeup water. To do. Note that the pressure sensor 17 provided in the hot water tank 9 is not limited to the inner wall of the hot water tank 9, but can be appropriately selected such as the vicinity of the through hole 9b of the lead pipe 9d.
In the above embodiment, the remaining amount of hot water for the last two times and one time are individually detected, but the cleaning was performed after the remaining amount of hot water was detected for two times and the indicator was turned on. At this time, the pump unit 14 may be driven and controlled so that the amount of hot water equivalent to one time is jetted, and the indicator blinks to notify that the remaining amount of hot water is one time. Moreover, although the indicator by LED was used as an alerting | reporting means, liquid crystal display device is mounted, for example, it is also possible to notify the user by displaying characters such as “for the remaining one time” and “for the remaining two times” on the liquid crystal display device. Good.
Next, an example of the hot water cleaning unit employed in the portable toilet of the present invention will be described. As shown in FIGS. 12 to 16, the hot water cleaning unit 40 includes a buttocks cleaning nozzle 41, a bidet cleaning nozzle 42, a buttocks cleaning nozzle nozzle case 43 for moving the buttocks cleaning nozzle 41, and a bidet cleaning nozzle 42. Select whether to supply the hot water of the hot water tank 9 supplied by the pump unit 14 to the buttocks cleaning nozzle 41 or the bidet cleaning nozzle 42 with the nozzle case 44 for the bidet cleaning nozzle that performs advancing and retreating operations The washing water switching unit SU is provided with a switching valve 46 for performing the above operation.
The nozzle unit NU is accommodated in a butt washing nozzle nozzle case 43 and a bidet washing nozzle nozzle case 44 that are arranged in parallel vertically so that the bidet washing nozzle 42 is positioned substantially parallel to the bottom of the butt washing nozzle 41. Yes. As will be described later, the butt washing nozzle 41 and the bidet washing nozzle 42 perform an advancing operation by pressurizing the warm water by the pump unit 14 and eject the warm water from the nozzle holes 41a and 42a at the front end portions. The buttocks cleaning nozzle case 43 and the bidet cleaning nozzle case 44 are integrally formed of synthetic resin.
The buttocks cleaning nozzle 41 has a cylindrical shape such as a cylindrical shape made of synthetic resin, and the internal passage 41t through which hot water as cleaning water flows is formed so that the cross-sectional area S1 gradually decreases toward the nozzle hole 41a at the tip. The pressure of the washing water is set to be highest at the tip of the internal passage 41t. On the other hand, the bidet cleaning nozzle 42 has a cylindrical shape such as a cylindrical shape made of synthetic resin like the buttocks cleaning nozzle 41, and the internal passage 42t through which the warm water as the cleaning water flows gradually has a cross-sectional area toward the nozzle 42a at the tip. S2 is formed to be small, and the pressure of the washing water is highest at the tip of the internal passage 42t.
At the rear end of the nozzle unit NU, there are a hot water introduction part 43b for introducing the hot water supplied from the washing water switching unit SU to the buttocks washing nozzle nozzle case 43 and a hot water introduction part 44b for conducting the bidet washing nozzle nozzle case 44. Prepare. Specifically, the hot

water introduction parts

43 b and 44 b are formed in the introduction part cover 46, and an attachment member 67 is attached to the rear end of the nozzle unit NU with a screw 68 so as to cover the introduction part cover 46. . As a result, the inlet opening at the rear end of the buttocks cleaning nozzle nozzle case 43 is in communication with the hot water introducing portion 43b, and the inlet opening at the rear end of the bidet cleaning nozzle nozzle case 44 is in communication with the hot water introducing portion 44b. It becomes a state.
Thus, the butt washing nozzle 41 and the bidet washing nozzle 42 arranged above and below are both arranged to move forward and backward in the space of the pedestal 2, and are center lines between the left and right sides of the pedestal 2. Therefore, it is arranged on the center line in the front-rear direction. For this reason, the hot water jet from right below or the back right below is obtained with respect to the to-be-cleaned locals, such as an anus and a bidet of the person seated on the toilet seat 7.
For this reason, in a state where the pump unit 14 is not pressurized to the hot water, the butt washing nozzle 41 is kept in the state of being retracted into the butt washing nozzle nozzle case 43 by the coil spring 45a, and the hot water is not pressurized. When done, the pressure receiving is received by the water receiving portion 41b of the annular flange formed at the rear end of the wetting washing nozzle 41, and the wetting washing nozzle 41 advances while compressing the coil spring 45a, and is attached to the water receiving portion 41b. The packing 41p comes into contact with the stopper 43a in the nozzle case 43 for the buttocks cleaning nozzle and stops at a predetermined advance position.
On the other hand, even in the case of the bidet cleaning nozzle 42, the bidet cleaning nozzle 42 is kept in the state of being retracted into the bidet cleaning nozzle nozzle case 44 by the coil spring 45 b when the pump unit 14 is not pressurized to the hot water. When the hot water is pressurized, the pressure receiving is received by the water receiving portion 42b of the annular flange formed at the rear end of the bidet cleaning nozzle 42, and the bidet cleaning nozzle 42 advances while compressing the coil spring 45b. The packing 42p attached to the water receiving portion 42b comes into contact with the stopper 44a in the bidet cleaning nozzle case 44 and stops at a predetermined position.
Next, as shown in FIGS. 14 and 16, the washing water switching unit SU is switched between an electric motor 47 that rotates the switching valve 46, a valve chamber member 50 that forms a valve chamber 49 that houses the switching valve 46, and a switching chamber 46. The butt washing water passage 51 switched by the valve 46 and the switching passage member 53 that forms the bidet washing water passage 52 are combined and integrated by a screw 54, whereby the watertight state of the valve chamber 49 is maintained. .
The switching valve 46 is supported by a drive shaft 48 of an electric motor 47 and accommodated in a valve chamber 49 so as to rotate forward and reverse on a horizontal axis. The flexible chamber 16 is connected to the warm water inlet 49 b formed on the upper wall of the valve chamber member 50, and the warm water supplied from the flexible tube 16 flows into the valve chamber 49.
The drive shaft 48 of the electric motor 47 may be composed of only the shaft 48a extending from the rotor of the electric motor 47, but it is integrated with the shaft 48a extending from the rotor of the electric motor 47. The auxiliary shaft 48b is used. Further, as shown in FIG. 13, the drive shaft 48 of the electric motor 47 penetrates the switching passage member 53 in a sealed state by a seal packing 56 so that the hot water does not leak, and a switching valve 46 is attached to the tip thereof. The electric motor 47 performs a stepping operation by a pulse output of a control circuit described later, and is also referred to as a stepping motor.
In consideration of ease of assembly and replacement / repair, the switching valve 46 is attached to the tip of the drive shaft 48 of the electric motor 47 by fitting from the left side in FIG. Since the flow of the hot water switched by the switching valve 46 is switched between a state in which the valve passage 46 a penetrating the switching valve 46 communicates with the buttocks washing passage 51 and a state in which the valve passage 46 a communicates with the bidet washing water passage 52. The switching valve 46 needs to be pressed and held by the switching passage member. For this reason, in order that the switching valve 46 can be rotated and its support is stabilized, a configuration is adopted in which the switching valve 46 is held by pressing the coil spring 59 toward the drive shaft 48 side.
Specifically, the opposite side of the switching valve 46 from the drive shaft 48 is a support shaft 57 protruding in the direction of the drive shaft 48 from the side wall (left wall in FIG. 14) of the valve chamber 49 and a support shaft protruding from the switch valve 46. A coil spring 59 that is loosely fitted to 58 is pressed and held toward the switching valve 46 side, so that the electric motor 47 can smoothly rotate forward and backward.
As described above, the washing water switching unit SU has a configuration in which the electric motor 47, the valve chamber member 50, and the switching passage member 53 are integrated by the screws 54. In this integrated state, the washing water switching unit SU is screwed to the side surface of the hot water tank 9, and in this state, the end of the flexible tube is connected to the hot water inlet 49 b of the valve chamber 49. Note that a seal packing 61 is provided to prevent water leakage from the connecting portion.
Moreover, in order to prevent warm water from leaking out from the joint portion between the valve chamber member 50 and the switching passage member 53 by being integrated in this way, the joint portion is sealed with a rubber seal packing 62. Further, in the state where the flow of warm water is switched to the buttocks washing water passage 51 by the switching valve 46, the warm water is prevented from flowing into the bidet washing water passage 52, and the warm water flow is switched to the bidet washing water passage 52. In order to prevent warm water from flowing into the buttocks washing water passage 51 in this state,

rubber seal packings

63a and 63b are attached to the inlet periphery of the buttocks washing water passage 51 and the bidet washing water passage 52. As a result, when the switching valve 46 is pressed toward the switching passage member 53 by the coil spring 59, one surface of the switching valve 46 is pressed against the

seal packings

63a and 63b. The flow is switched to the buttocks washing water passage 51 and the bidet washing water passage 52.
When one surface of the switching valve 46 is in pressure contact with the

seal packings

63a and 63b, the operation of the switching valve 46 to switch between the washing water passage 51 and the bidet washing water passage 52 is stabilized. Therefore,

rubber contact members

65a and 65b are fitted in the

recesses

64a and 64b of the switching passage member 53 so as to be flush with the

seal packings

63a and 63b, respectively.
Since the hot water cleaning unit 40 is connected to the hot water passage of the nozzle unit NU and the cleaning water switching unit SU, the butt washing water passage 51 has an outlet 51a connected to the hot water introduction portion 43b by the flexible tube 19. . The bidet washing water passage 52 has an outlet 52a connected to the hot water introduction part 44b by the flexible tube 18. The nozzle unit NU is fixed to the pedestal 2 with screws 68, and the butt washing nozzle 41 and the bidet washing nozzle 42 are held at predetermined positions on the center line in the front-rear direction that is the center line between the left and right sides of the pedestal 2.
Next, functional elements attached to the portable toilet 1 of the present invention configured as described above will be described. The toilet seat 7 can be opened and closed by an electric motor 71 and includes a deodorizing unit 72 and a drying unit 73. The toilet seat 7 is provided with a heater coated with an insulating foil on the back surface of the toilet seat 7 via an aluminum foil, and is heated by this heater.
As shown in the enlarged view of FIG. 17, the operation unit 80 for operating each functional element and the nozzle unit NU is provided with various operation switches and LED display units. As the operation switches, a buttocks washing start switch 83, a bidet washing start switch 84, a washing stop switch 82, a washing water flow increase /

decrease switch

85a, 85b, a hot water temperature adjusting switch 86 for the hot water tank 9, and a toilet seat for changing the temperature of the toilet seat 7 A temperature control switch 87 and the like are provided.
The LED display unit displays the water strength in three levels corresponding to the water flow increase /

decrease switches

85a and 85b. The LED 85c displays the hot water temperature in three levels corresponding to the hot water temperature adjustment switch 86. In response to the toilet seat temperature adjustment switch 87, an LED 87a for displaying the toilet seat temperature in three stages of low, medium and high is provided. In addition, when the hot water in the hot water tank 9 or the replenishing water in the water supply tank 20 is insufficient, an LED 81 that is turned on based on a signal from the flow switch 11 or the magnetic sensitive element 30 is provided. Note that switches 99 a and 99 b for turning on and off the electric motor 71 that opens and closes the toilet seat 7 in the vertical direction are also provided in the operation unit 80.
FIG. 18 shows a configuration of a control circuit 90 as control means. A control unit 91 mainly composed of a microcomputer is connected to a commercial AC power supply AC, and an operation unit 80 is connected to the control unit 91. Further, the control unit 91 includes a seating switch 92 that detects seating on the toilet seat 7, a temperature sensor 93 that detects the temperature of the toilet seat 7, the float switch 11 or the magnetic sensitive element 30, and the temperature of hot water in the hot water tank 9. Is connected to the thermistor 12. The seat switch 92 may be a switch that operates when the toilet seat 7 is slightly lowered by the weight when a person is seated on the toilet seat 7, or an infrared switch that detects a person seated on the toilet seat 7 with infrared rays.
The control unit 91 includes a timer, a memory, and the like, and is a control method by a microcomputer that performs a predetermined operation according to a preset program. Further, the commercial AC power source AC includes a switching element 94a to 94g that operates based on an output signal from the control unit 91, a toilet seat heater 95, a hot water heater 10 that raises the temperature of water in the hot water tank 9, and a switching element. An electric motor 47 that drives the valve 46, an electric motor 71 that opens and closes the toilet seat, a deodorizing unit 72, a drying unit 73, and a pump unit 14 are connected.
In the standby state in which the control circuit 91 is activated, the temperature detecting unit 96 whose contact is normally closed is opened when an abnormal temperature in the hot water tank 9 is detected, and the energization of the hot water heater 10 is interrupted. Further, the water in the hot water tank 9 is operated by the control unit 91 based on the temperature sensing of the thermistor 12 so that the switching element 94b performs ON / OFF operation of energization to the hot water heater 10, and the temperature of the hot water is a predetermined temperature. Maintained in range.
In the standby state, the surface of the switching valve 46 other than the valve passage 46a is in contact with the

seal packings

63a and 63b at the inlet periphery of the buttocks washing water passage 51 and the bidet washing water passage 52. The valve 46 closes the entrance of the buttocks washing water passage 51 and the bidet washing water passage 52 so that the hot water tank 9 does not communicate with either the buttocks washing water passage 51 and the bidet washing water passage 52, and the valve passage 46 a has the buttocks washing water. It does not communicate with either the passage 51 or the bidet washing water passage 52, and is in a cut-off state.
In such a standby state, the control unit 91 operates the switching element 94d to operate the electric motor 71 and open the toilet seat 7 upward. When the seating switch 92 detects the seating of a person on the toilet seat 7, the switching element 94e is energized to start the operation of the deodorizing unit 72. In this seated state, when the buttocks cleaning start switch 83 is pressed and a buttocks cleaning command is issued, or when the bidet cleaning start switch 84 is pressed and a bidet cleaning command is issued, the control unit 91 appropriately operates the switching element 94c. Then, the switching valve 46 is rotated by driving the electric motor 47 and the pumping unit 14 is driven by operating the switching element 94g. As a result, the pump unit 14 sucks the hot water in the hot water tank 9 through the flexible tube 15, and the sucked and pressurized hot water through the flexible tube 16 to the washing water switching unit SU. Supply.
In this case, when the buttocks cleaning start switch 83 is pressed, the switching valve 46 is rotated by the operation of the electric motor 47 in contact with the

seal packings

63a and 63b and the

contact members

65a and 65b. The electric motor 47 stops in a state where the valve passage 46 a of the switching valve 46 communicates with the buttocks washing water passage 51. As a result, the hot water pressurized by the pump unit 14 and supplied to the valve chamber 49 passes through the valve passage 46a and the buttocks washing water passage 51, and passes through the flexible tube 19 from the outlet portion 51a of the nozzle unit UN. It flows into the hot water introduction part 43b.
The water pressure of the hot water flowing into the hot water introduction part 43b acts on the water receiving part 41b of the butt washing nozzle 41 in the retracted position by the coil spring 45a, and advances the butt washing nozzle 41 while compressing the coil spring 45a. The advancement stops by contacting the stopper 43a. In this way, at the position where the buttocks cleaning nozzle 41 has advanced and stopped, the hot water serving as the cleaning water passes through the central hole of the water receiving portion 41b and flows into the internal passage 41t of the buttocks cleaning nozzle 41, and the tip nozzle. It is possible to wash the squirt by ejecting from the hole 41a.
When the washing stop switch 82 is pressed, the control unit 91 is activated, the switching element 94c is activated to drive the electric motor 47, the switching valve 46 is returned to the standby position, and the switching element 94g is activated. The drive of the pump unit 14 is stopped. As a result, the hot water sucked from the hot water tank 9 by the pump unit 14 is no longer pressurized, so the ejection of hot water from the nozzle hole 41a is stopped and the butt washing nozzle 41 is washed by the coil spring 45a. It returns to the state where it is retracted into the nozzle case 43.
On the other hand, when the bidet cleaning start switch 84 is pushed, the operation of the electric motor 47 rotates the switching valve 46 in contact with the

seal packings

63a and 63b and the

contact members

65a and 65b. The electric motor 47 stops in a state where the valve passage 46 a of the 46 communicates with the bidet washing water passage 52. As a result, the hot water pressurized by the pump unit 14 and supplied to the valve chamber 49 passes through the valve passage 46a and the bidet washing water passage 52, passes through the flexible tube 18 from the outlet 52a, and flows into the nozzle unit NU. It flows into the introduction part 44b.
The water pressure of the warm water flowing into the warm water introduction part 44b acts on the water receiving part 42b of the bidet washing nozzle 42 in the retracted position by the coil spring 45b, advances the bidet washing nozzle 42 while compressing the coil spring 45b, and the packing 42p The advancement stops by contacting the stopper 44a. In this way, at the position where the bidet cleaning nozzle 42 has advanced and stopped, the hot water serving as the cleaning water passes through the central hole of the water receiving portion 42b and flows into the internal passage 42t of the bidet cleaning nozzle 42, and the nozzle at the tip Bidet cleaning is possible by ejecting from the hole 42a.
When the washing stop switch 82 is pressed, the control unit 91 is activated, the switching element 94c is activated to drive the electric motor 47, the switching valve 46 is returned to the standby position, and the switching element 94g is activated. The drive of the pump unit 14 is stopped. As a result, the hot water sucked from the hot water tank 9 by the pump unit 14 is no longer pressurized, so the ejection of hot water from the nozzle hole 42a stops and the bidet cleaning nozzle 42 is bidet cleaned by the coil spring 45b. The state returns to the state of being retracted into the nozzle case 44.
As described above in detail, in the portable toilet 1 of the present invention, the pump unit 14 performs the advancement of the buttocks washing nozzle 41 and the bidet washing nozzle 42 and the pressurization to the warm water for ejecting the hot water from the nozzle holes 41a and 42a. However, as shown in FIG. 21, since the hydrostatic pressure of the makeup water in the water supply tank 20 disposed in the hot water tank 9 reaches the hot water in the hot water tank, the hot water is always energized. Thus, the intended function can be obtained without increasing the capacity of the pump unit 14 more than necessary. In addition, although advancement of the buttocks washing nozzle 41 and the bidet washing nozzle 42 has been described based on the embodiment in which the pump unit 14 pressurizes the hot water, this pressurization is used only for the injection of hot water, The back and forth washing 41 and the bidet washing nozzle 42 may be advanced and retracted by an electric motor.
In addition, since the conventional method of pumping makeup water from the feed water tank is not adopted, it is not necessary to provide a feed water pipe to the feed water tank, which makes it easy to remove the feed water tank from the hot water tank, Replenishment work becomes simple. Furthermore, in the portable toilet of the present invention, means for detecting a decrease in warm water or a decrease in makeup water is provided in the warm water tank or water supply tank, so that it is possible to accurately notify the replenishment time of makeup water.
As described above, the detection of the remaining amount of hot water and the notification of the replenishment time of the replenishing water are made possible based on the signals from the magnetic sensitive element, the reed switch, and the pressure sensor. It is possible to detect a function to be a problem, that is, to detect a hydrostatic pressure of makeup water and to change a driving force of the pump unit based on this. Hereinafter, an example in which the pressure sensor 17 is employed will be described with reference to FIG. 19 showing a control mode of the pump unit 14 and FIG. 20 showing a control flow of the pump unit.
In the present invention, a DC motor is employed for the pump unit 14 and this DC motor is driven and controlled by an applied voltage control method or a PWM control method. As shown in FIG. 19, the drive control is based on the pump unit 14 when the magnitude of the hydrostatic pressure (= remaining amount of makeup water) when the makeup water is replenished to the water tank 20 to the maximum is ST1. The driving force is set to SP1 as a reference, and is set as a starting point of control start. That is, in the program control flow shown in FIG. 20, first, whether or not the pressure sensor 17 is activated is determined (Sa1), and when no signal is obtained from the pressure sensor 17, the hydrostatic pressure of the makeup water is set to the hot water tank 9. It is determined that the water supply tank 20 is not disposed in a state where the water supply tank 20 is not reached.
In this state, when the water supply tank 20 to which replenishment water is replenished to the maximum is arranged in the hot water tank 9, the hydrostatic pressure of the make-up water reaches the hot water tank 9, and the pressure sensor 17 detects the hydrostatic pressure ST1 (Sa2). Therefore, the smallest driving force SP1 of the pump unit 14 using the urging force of the largest hydrostatic pressure ST1 is initialized. However, it is not always possible to replenish the water supply tank 20 with the maximum amount of replenishment water, and it is possible to assume a state in which the water supply tank 20 that is replenished several percent less than the maximum replenishment amount is disposed in the hot water tank 9. However, since the process of detecting the hydrostatic pressure is performed in the process Sa2, when the water supply tank 20 is arranged, the hydrostatic pressure ST2 corresponding to the amount of the replenished supply water is detected, and based on this. The driving force SP2 of the pump unit 14 is initially set, and problems associated with the replenishment amount of makeup water can be avoided.
In this way, when the initial setting is performed and the injection from the hot water nozzle is the fixed injection method, when the execution of cleaning is confirmed (Sa3), the driving force of the pump unit 14 is stepped up (Sa4). At the same time, the hydrostatic pressure is detected again in the process Sa2, and it is determined whether the number of cleanings is the last two times based on the signal from the pressure sensor 17 (Sa5). If the number of times has not been reached, the process shifts to a standby state of the process Sa3.
Since the above processing and determination are repeated each time cleaning is repeated, the driving force of the pump unit 14 gradually increases as the makeup water decreases, that is, the hydrostatic pressure decreases, and the remaining makeup water remains. Regardless of how much, the injection state of the hot water from the nozzle is constant. In this way, if the cleaning is continued and it is determined that the number of times that cleaning is possible is the last two times (Sa5), the warning lamp is turned on (Sa6), and a transition is made to the standby state. When the last two cleanings are executed, if it is determined that the possible number of cleanings is the final one (Sa7), the warning lamp blinks (Sa8) and the cleaning function is stopped.
As is apparent from the above description, a detection element that moves up and down in synchronization with the water surface position of the makeup water in the supply tank is provided inside the supply tank, while the vertical direction of the detection element is outside the supply tank. By providing a detection element for detecting the proximity of the element to be detected, or by providing a pressure sensor inside the hot water tank, the number of times that cleaning can be performed is the final two times based on the electrical signal detected by the detection element or the pressure sensor. And the final one can be identified and displayed by an indicator.
In addition, even if the replenishing water in the water supply tank 20 is reduced by repeated washing, the hot water injection state from the nozzle can be made constant, thereby avoiding the occurrence of problems due to the most important functional deterioration in the portable toilet. Therefore, the present invention can provide an effect peculiar to the present invention.
As described above, in the first aspect of the present invention, the seat portion is provided with the warm water washing toilet seat, the defecation collection tray is provided below the warm water washing toilet seat, and the water supply tank and the hot water tank are provided on the back side of the backrest. When the water supply tank is arranged above the hot water tank, the water supply port of the water supply tank and the water intake port of the hot water tank are connected, and the hydrostatic pressure of the makeup water of the water supply tank is It was designed to be a portable toilet that could reach the hot water in the tank.
Further, in the first aspect, a negative pressure destruction valve is provided in the water supply tank, and a negative pressure destruction valve is provided that can prevent leakage of makeup water when the water supply tank is detached from the hot water tank and reversed.
In the second aspect of the present invention, a warm water washing toilet seat is provided in the seating portion, a defecation collection tray is provided below the warm water washing toilet seat, and a water supply tank and a hot water tank are arranged on the back side of the backrest. It is a portable toilet, and when a water supply tank is arranged above the hot water tank, the water supply port of the water supply tank and the water supply port of the hot water tank are connected so that the hydrostatic pressure of the supply water of the water supply tank reaches the hot water of the hot water tank. And a pump unit for sucking hot water from the hot water tank is provided, the hot water is pumped to the nozzle unit by the pump unit, and a lead pipe is suspended from the center of the water receiving port of the hot water tank toward the inside of the hot water tank. The replenishment water in the water supply tank that flowed in from the top end of the lead pipe was allowed to flow out from the bottom end toward the bottom of the hot water tank.
Also, the tip of the hot water tank's water inlet is expanded outward to form a tapered surface so that the tip of the annular flange of the water tank's water inlet can be easily attached.
Furthermore, a thick portion is provided inside the annular flange of the water supply port of the water tank so that the space capacity inside the annular flange is relatively smaller than the space capacity inside the annular flange of the water receiving port of the hot water tank. When the tank was removed from the hot water tank, the makeup water staying inside the annular flange of the water supply port of the water supply tank was prevented from leaking outside through the annular flange of the water supply port of the hot water tank.
According to the second aspect of the present invention, the pump unit for sucking the hot water in the hot water tank is provided, and the hot water is pumped to the nozzle unit by this pump unit. It becomes possible to discharge from the nozzle unit. For this reason, the user can perform cleaning using the nozzle unit even in the portable toilet.
In addition, a lead pipe is suspended from the center of the water receiving port of the hot water tank toward the inside of the hot water tank, and the makeup water of the water tank flowing in from the top end of the lead pipe is transferred from the bottom end to the bottom of the hot water tank. Since it flows out, the warm water adjusted in temperature and the replenishment water having a low temperature staying in the upper layer portion in the warm water tank do not intersect with each other, and the warm water having an appropriate temperature can be supplied to the nozzle unit. Further, when the water supply tank is connected to the hot water tank, a large amount of makeup water does not suddenly flow into the hot water tank from the water supply tank. In addition, by adjusting the diameter of the lead pipe, it is possible to adjust both the makeup water per unit time flowing from the water supply tank to the hot water tank.
Furthermore, since the front end portion of the water receiving port of the hot water tank is expanded outward to form a tapered surface, the front end portion of the annular flange of the water supply port of the water supply tank can be easily attached to the hot water tank. In addition, a thick portion is provided inside the annular flange of the water supply port of the water supply tank so that the space capacity inside the annular flange is relatively smaller than the space capacity inside the annular flange of the water inlet of the hot water tank. When the water supply tank is removed from the hot water tank, it is possible to prevent the makeup water staying inside the annular flange of the water supply port of the water supply tank from leaking outside through the annular flange of the water supply port of the hot water tank.
In the third aspect of the present invention, a warm water washing toilet seat is provided in the seating portion, a defecation collection tray is provided below the warm water washing toilet seat, and a water supply tank and a hot water tank are arranged on the back side of the backrest. It is a portable toilet, and when a water supply tank is arranged above the hot water tank, the water supply port of the water supply tank and the water supply port of the hot water tank are connected so that the hydrostatic pressure of the supply water of the water supply tank reaches the hot water of the hot water tank. In addition, by providing a float switch in the hot water tank so that the water level of the hot water can be detected, it is possible to report the shortage of makeup water in the water tank.
Further, in the third aspect, an outflow pipe for discharging hot water in the hot water tank is disposed below the float switch on a side surface of the hot water tank, and further includes a washing nozzle. The hot water discharged from the outflow pipe is guided to the washing nozzle, and a sufficient amount of hot water that can be washed a predetermined number of times using the washing nozzle can be secured between the float switch and the outflow pipe. A space was formed.
According to the third aspect of the present invention, since the water level of the hot water tank can be detected, it is possible to display an indicator of the shortage of the replenishing water in the water supply tank and easily notify the replenishment time of the replenishing water. And can eliminate the risk of bothersome management and burns. In addition, an outflow pipe for discharging the hot water in the hot water tank is arranged below the float switch on the side of the hot water tank, and hot water having a water quantity that can be washed using a washing nozzle between the float switch and the outflow pipe. Therefore, even after the float switch detects that the hot water has decreased to a certain amount of water, it can be washed a predetermined number of times (for example, once or twice).
In the fourth aspect of the present invention, a portable water seat is provided with a warm water washing toilet seat in the seating portion, a defecation collection tray is provided below the warm water washing toilet seat, and a water supply tank and a hot water tank are arranged on the back side of the backrest. In the toilet, when the water supply tank is placed above the hot water tank, the water supply port of the water supply tank and the water supply port of the hot water tank are connected so that the hydrostatic pressure of the supply water of the water supply tank reaches the warm water of the hot water tank. A detecting element that moves up and down in synchronization with the surface position of the makeup water in the water supply tank, and a detecting element that detects the proximity of the detected element outside the water supply tank in the vertical direction of the detected element. And a notification unit for notifying the shortage of makeup water in the water supply tank based on the electrical signal detected by the detection element.
The detection element may be disposed on the hot water tank side, the detected element may be a permanent magnet, and the detection element may be a magnetic sensitive element. Alternatively, the detected element may be a permanent magnet, and the detecting element may be a reed switch.
Furthermore, based on the electrical signal detected by the sensing element, an indicator informs that the number of possible cleanings is the final two times and the final one time.
According to the fourth aspect of the present invention, the detected element that moves up and down in synchronization with the level of the makeup water in the water supply tank is provided inside the water supply tank, while the water supply in the vertical direction of the detected element is provided. A detection element that detects the proximity of the element to be detected is provided on the outside of the tank, and based on the electrical signal detected by the detection element, the indicator indicates that the number of possible cleanings is the last two times and the last one can do.

1 ····················································································································································· 6・ Backrest 7 ・・・・・・ Toilet seat 8 ・・・・・・ Anchor pipe 9 ・・・・・・ Hot water tank 10 ・・・ Electric heater 11 ・・・ Float switch 12 ・・・・· Thermistor 13 ··· Packing 14 ··· Pump unit 15 · 16 · · Flexible tube 17 · · · Pressure sensor 18 · 19 · · · Flexible tube 20 ··· Water tank 21... Negative pressure release valve 22... Cap body 23... Spindle 24 .. Close valve 25... Compression coil springs 26, 27. ... Strainer 29 ... Floating unit 30 ... Magnetic sensitive element 31 ... Casing 40 ... Hot water cleaning unit NU ... Nozzle unit SU ... Washing water switching unit 41 ... Butt Cleaning nozzle 42 ··· Bidet cleaning nozzle 43 ··· Nozzle cleaning nozzle case 44 · · · Bidet cleaning nozzle nozzle case 45a · · · coil spring 45b · · · coil spring 46 · · · ... Switching valve 47 ... Electric motor 48 ... Drive shaft 49 ... Valve chamber 50 ... Valve chamber member 51 ... Wet washing water passage 52 ··· Bidet wash water passage 53 ··· Switching passage member 54 ··· Screw 56 ··· Seal packing 57, 58 ··· Support shaft 59 · · · Coil spring 71 ··· ..Electric motor 72 Odor unit 73 ... Drying unit 80 ... Operation unit 81 ... LED
90 ... Control circuit

Claims

A portable toilet in which a seat is provided with a warm water washing toilet seat, a defecation collection tray is provided below the warm water washing toilet seat, and a water supply tank and a hot water tank are arranged on the back side of the backrest,
When the water supply tank is arranged above the hot water tank, the water supply port of the water supply tank and the water supply port of the hot water tank are connected so that the hydrostatic pressure of the makeup water of the water supply tank reaches the hot water of the hot water tank. A portable toilet.
The portable toilet according to claim 1, wherein a negative pressure release valve is provided in the water supply tank.
3. The portable toilet according to claim 2, wherein the water supply tank is a negative pressure release valve configured to prevent leakage of makeup water from the water supply tank when the water supply tank is detached from the hot water tank and reversed. A portable toilet.