JP2012152440A - Portable toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable toilet in which a pump unit for jetting warm water from a nozzle unit is downsized to reduce power consumption, attachment/removal of a water supply tank is easy by making a water supply hose for sucking replenishment water from a water supply tank unnecessary, and replenishing work of the replenishment water to the water supply tank is easy too.SOLUTION: A defecation collection toilet 4 is provided below a warm water cleaning toilet seat, and a water supply tank 20 and a warm water tank are placed at a back surface part of a backrest 6. When the water supply tank is placed above the warm water tank 20, a water supply port of the water supply tank 20 and a water reception port of the warm water tank 20 are connected, and hydrostatic pressure of the replenishment water in the water supply tank reaches the warm water in the warm water tank. By providing a negative pressure breaking valve for the water supply tank 20, generation of negative pressure in the water supply tank which rises as replenishment water is supplied is canceled and a decrease in hydrostatic pressure warm water receives is prevented. Further, the negative pressure breaking valve is configured so that when the water supply tank 20 is placed upside down, the replenishment water may not leak and drip.

Description

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, etc., a warm water flush toilet seat device arranged on the flange of a flush toilet bowl is
Since tap water is always supplied from the conduit pipe connected to the tap water pipe, no consideration is required for water supply. 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.

Furthermore, in a conventional portable toilet in which tap water pressure cannot be used, FIG.
Since the water supply tank T1 and the hot water tank T2 are completely separate from each other, a water supply pump P is provided, and the discharge side of the water supply pump is connected to the hot water tank T2, while the suction side is shown in FIG. The water supply tank T1 is faced.

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.

Therefore, the present invention solves the above problems by means described below. That is,
According to the first aspect of the present invention, the seat portion 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 disposed on the back portion 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, a negative pressure release valve is provided in the water supply tank.

The invention according to claim 2 is a negative pressure release valve configured to prevent leakage of makeup water in the water supply tank when the water supply tank is detached from the hot water tank and turned upside down. Features.

In the first aspect of the invention, when the water supply tank is arranged above the hot water tank, the makeup water in the water supply tank flows into the warm water tank. It reaches hot water. 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. Further, the problem that the negative pressure inside the water supply tank increases with the supply of makeup water and the hydrostatic pressure received by the hot water gradually decreases can be solved by providing a negative pressure destruction valve.

In the invention according to claim 2, since the negative pressure destruction valve is configured so that the makeup water does not leak when the top and bottom of the water supply tank is reversed, the situation in which the makeup water drops from the negative pressure destruction valve. It is possible to avoid it.

It is a front perspective view which shows the external appearance of the portable toilet of this invention. It is a back perspective view which shows the external appearance of the portable toilet of this invention. It is a top view which shows the structure of the principal part of this invention. It is a partial cross section figure which shows the structure of the principal part of this invention. It is a partial cross section figure which shows the structure of the principal part of this invention. It is a perspective view which shows the structure of the principal part of this invention. It is a perspective view which shows the structure of the principal part of this invention. It is a perspective view which shows the assembly state of the principal part of this invention. It is sectional drawing which shows the structure of the hot water tank of this invention. It is sectional drawing which shows the joining state of the hot water tank and water supply tank of this invention. It is a perspective view of the nozzle unit employ | adopted as this invention. It is a perspective view of the nozzle unit employ | adopted as this invention. It is sectional drawing of the washing water switching unit employ | adopted for this invention. It is sectional drawing of the nozzle unit employ | adopted as this invention. It is a disassembled perspective view of the washing water switching unit employ | adopted for this invention. It is a figure which shows the example of the operation part employ | adopted as this invention. It is a figure which shows the example of the control circuit employ | adopted as this invention. It is a figure explaining the outline | summary of the water circuit of the portable toilet of this invention. It is a figure explaining the outline | summary of the water circuit of the 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, a pedestal 2 having an opening 2a at the center portion.
The support legs 3 are provided at the four corners so that they can stand on their 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 Backrest on the part corresponding to the back 6
Is arranged. 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 10 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. 9, the upper end portion is expanded outward to form a tapered surface, the base portion has an annular flange 9a integrated with the hot water tank 9, and is formed at the center portion. 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.

Therefore, the replenishing water supplied to the water receiving port 9A passes through the through-hole 9b and the lead pipe 9d.
The replenishing water is supplied from the opening facing the bottom surface of the hot water tank 9 of the lead pipe 9d. 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. The 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. 20a is fitted, but at this time water tank 2
The hydrostatic pressure of make-up water within 0 is concentrated at the water supply port 20A. Therefore, 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 the water tank 20 is provided.
When the annular flange 22a of the cap body 22 is mounted, the tip of the annular flange 22a crushes the packing 13 so that a watertight state is obtained and leakage of makeup water is prevented.

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. The negative pressure release valve 21 shown in FIG.
), A steel ball 21b rides on the coil spring 21a and is housed in a casing. Further, vent holes 21c and 21e are formed in the casing above the steel ball 21b.

Since the negative pressure break-off 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, the water supply tank 20 is removed from the hot water tank 9, and the pressure release valve 2
When the top and bottom are reversed so that 1 is on the lower side, the coil spring 2 as shown in the blowout diagram (B)
The steel ball 21b is pushed in the direction of the air hole 21c by the restoring force of 1a, and is sealed by the packing 21d, thereby closing the air hole 21c. 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. 10, 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 this screw flange 2
A cap body 22 that is screwed to 0a is provided. 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. 10, the spindle 23 is the protruding portion 9 of the water receiving port 9 </ b> A of the hot water tank 9.
Then, the stop valve 24 opens the opening of the valve receiving flange 22d so that the makeup water in the water supply tank 20 can 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. 10, 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, and the packing 27 is attached to the flat portion of the cap body 22 corresponding to the packing 26, and the strainer 28 is attached.
Is sandwiched between the packings 26 and 27 to prevent leakage of makeup water. Water supply tank 2
When replenishing makeup water to 0, the top of the detached water tank 20 is reversed and the cap body 2
By turning 2 and unscrewing the screw flange 20a, and removing the strainer 28, water can be injected from the opening of the screw 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 flow switch 11, but the configuration for detecting this when the supplementary water in the water supply tank 20 runs short will be described below. As shown in FIG. 5, a floating unit 29 is provided at the bottom of the water supply tank 20.
Is disposed. 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.

With this configuration, when the makeup water in the water supply tank 20 is consumed and the float 29a and the permanent magnet 29b descend in synchronization with the drop in the water level, the magnetic sensitive element 3
The influence of magnetic force on 0 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 due to electrical circuit processing, or an on / off signal from a reed switch may be lit to notify the shortage of makeup water, A plurality of indicators may be turned on sequentially corresponding to the size to visualize the degree of shortage of makeup water.

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. 11 to 15, the warm water cleaning unit 40 includes a buttocks cleaning nozzle 41, a bidet cleaning nozzle 42, a buttocks cleaning nozzle nozzle case 43 that moves the buttocks cleaning nozzle 41 forward and backward, 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. Wet cleaning nozzle case 4
3 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, pressurize the pressure nozzle 4
1 is received by the water receiving portion 41b of the annular flange formed at the rear end of the 1 and the buttocks cleaning nozzle 41 advances while compressing the coil spring 45a, and the packing 41p attached to the water receiving portion 41b is in the nozzle case 43 for the buttocks cleaning nozzle. It abuts against the stopper 43a 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. 13 and 15, 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. A buttocks washing water passage 51 switched by a valve 46 and a switching passage member 53 forming a bidet washing water passage 52 are combined and integrated by a screw 54, thereby the valve chamber 49.
The water-tight state of is maintained.

The switching valve 46 is configured such that the drive shaft 4 of the electric motor 47 is rotated forward and backward on the horizontal axis.
8 is accommodated in the valve chamber 49. 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. Moreover, as shown in FIG.
The drive shaft 48 of No. 7 penetrates the switching passage member 53 in a sealed state by a seal packing 56 so that hot water does not leak, and a switching valve 46 is attached to the tip of the switching passage member 53. 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, the switching valve 46 is provided with the drive shaft 4 of the electric motor 47.
8 is fitted and attached 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, the switching valve 46 is rotatable and the support thereof is stabilized.
A configuration in which the coil spring 59 is pressed toward the side is employed.

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. 13) 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, the switching valve 46
When the coil spring 59 is pressed toward the switching passage member 53, one surface of the switching valve 46 is in pressure contact with the seal packings 63a, 63b. Switching to the passage 51 and the bidet washing water passage 52 is performed.

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. 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
The pedestal 2 is held at a predetermined position on the center line in the front-rear direction, which is the center line between the left and right sides of the base 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.

The operation unit 80 for operating the functional elements and the nozzle unit NU is provided with various operation switches and LED display units as shown in an enlarged view in FIG. As the operation switches, a buttocks cleaning start switch 83, a bidet cleaning start switch 84, a cleaning stop switch 8
2. Wash water flow increase / decrease switch 85a, 85b, hot water tank 9 hot water temperature adjustment switch 8
6. A toilet seat temperature adjustment switch 87 for changing the temperature of the toilet seat 7 is 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. 17 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. The commercial AC power supply AC
Switching elements 94a to 9a that operate based on output signals from the controller 91.
4g includes a toilet seat heater 95, a hot water heater 10 for raising the temperature of the water in the hot water tank 9, an electric motor 47 for driving the switching valve 46, an electric motor 71 for opening and closing the toilet seat, a deodorizing unit 72, a drying unit 73, and a pump unit. 14 is 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 supplied from the control unit 9 based on the temperature sensing of the thermistor 12.
1, the switching element 94b performs ON / OFF operation of energizing the hot water heater 10, and the temperature of the hot water is maintained in a predetermined temperature 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 that a person is seated on the toilet seat 7, the switching element 94 e is energized to deodorize the unit 72.
Start the operation. 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 at the same time sucks and pressurizes the hot water in the flexible tube 16.
Is supplied to the washing water switching unit SU.

In this case, when the buttocks cleaning start switch 83 is pressed, the electric motor 4
7 is rotated while the switching valve 46 is in contact with the seal packings 63 a and 63 b and the contact members 65 a and 65 b, and the valve passage 46 a of the switching valve 46 is electrically connected to the buttocks washing water passage 51. The motor 47 stops. Thus, the valve chamber 4 is pressurized by the pump unit 14.
9 passes through the valve passage 46a and the buttocks washing water passage 51, and the outlet 51a.
Then, it flows into the hot water introduction part 43b of the nozzle unit UN through the flexible tube 19.

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. In the state where the valve passage 46 a of 46 communicates with the bidet washing water passage 52, the electric motor 47
Stops. 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 warm water serving as the cleaning water passes through the center hole of the water receiving portion 42b and flows into the internal passage 42t of the bidet cleaning nozzle 42,
Bidet cleaning is possible by jetting from the nozzle hole 42a at the tip.

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 explained in detail above, in the portable toilet 1 of the present invention, the butt washing nozzle 41
The bidet cleaning nozzle 42 is advanced, and the hot water is pressurized by the pump unit 14 to eject the hot water from the nozzle holes 41a, 42a. However, as shown in FIG. Since the hydrostatic pressure of the makeup water in the water tank 20 has reached the warm water in the warm water tank, the warm water is always energized, and without increasing the capacity of the pump unit 14 more than necessary. The function to do can be obtained. 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 according to the present invention, since the means for detecting the decrease in the warm water or the decrease in the makeup water is provided in the warm water tank or the water supply tank, it is possible to accurately leave the replenishment time of the makeup water. Play.

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 18 · 19 · · Flexible tube 20 · · · Water tank 21 ··· Negative pressure release valve 22 ... Cap body 23 ... Spindle 24 ... Close valve 25 ... Compression spring 26/27 ... Pack 28 ... Strainer 29 ... .... Floating unit 30 ... Magnetic sensitive element 31 ... Casing 40 ... Warm water washing unit NU ... Nozzle unit SU ... Washing water switching unit 41 ... Butt washing nozzle 42 ... Bidet Cleaning nozzle 43... Wet cleaning nozzle case 44... Bidet cleaning nozzle case 45 a... Coil spring 45 b... Coil spring 46. ..Electric motor 48... Drive shaft 49... Valve chamber 50... Valve chamber member 51 .. Butt wash water passage 52. ... Switching passage member 54 ... Screw 56 ... Seal packing 57/58 ... Support shaft 59 ... Coil spring 71 ... Electric motor 72 ...・ Deodorization unit 73 ... Dry Drying unit 80 ... Operation unit 81 ... LED
90 ... Control circuit

Claims (2)

The seat is provided with a warm water flush toilet seat, and a defecation collection tray is provided below the warm water flush toilet seat,
It is a portable toilet in which a water supply tank and a hot water tank are arranged on the back part 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 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 that features a negative pressure release valve. 2. The portable toilet according to claim 1, 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 turned upside down. .

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