Washlet portable toilet
A portable toilet with a bidet nozzle and user-friendly controls addresses the need for self-cleaning by patients with limited mobility, enhancing hygiene and reducing caregiver burden, while accommodating visually impaired users with notification assistance.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- WHITE HOUSE CO LTD
- Filing Date
- 2025-11-10
- Publication Date
- 2026-05-26
AI Technical Summary
Existing mobile toilets for patients with limited mobility require caregivers to manually clean them, which is burdensome and unhygienic.
A portable toilet with a bidet nozzle and user-friendly controls, allowing patients to self-clean and reducing caregiver burden through a movable chair with a bidet nozzle, user sensing, and notification system for visually impaired users.
Enables patients to self-clean, reducing caregiver burden and improving hygiene, and provides convenience for visually impaired users with notification assistance.
Smart Images

Figure 2026086373000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a washing type mobile toilet, and more particularly to a washing type mobile toilet that provides convenience and hygiene during excretion for patients with limited mobility.
Background Art
[0002] Generally, when it comes to a washing type mobile toilet, it is used by patients with limited mobility who cannot use the toilet in the bathroom. They place this toilet near them and perform excretion treatment with the help of caregivers as needed.
[0003] However, for such patients, caregivers need to lay the patients on the bed for cleaning during excretion treatment, or wet tissues, tissues, towels, etc. with water and roughly wipe the patients' anuses, which poses a burden on both the patients and the caregivers.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] Therefore, the problem to be solved by the present invention is to provide a washing type mobile toilet that can be moved and used around patients with limited mobility, has a bidet nozzle so that the patients themselves can wash their anuses, and can reduce the burden on caregivers in the hygienic excretion treatment of patients.
Means for Solving the Problems
[0006] A portable toilet with a washing function according to one embodiment of the present invention includes a chair that is movable and includes a toilet seat frame having a circular or square frame structure, a drain tank mounting frame provided inside the toilet seat frame, support legs that support the toilet seat frame, a backrest, and armrests connected to the backrest; a drain tank installed on the drain tank mounting frame; a toilet seat that is rotatably connected to the rear side of the toilet seat frame and mounted on the toilet seat frame; a bidet nozzle positioned on the rear side of the toilet seat frame and protruding inward toward the toilet seat; a water tank positioned beneath the chair so as to be located below the drain tank; a washing water supply unit including a pump connected to the water tank and a water supply hose connected from the pump to the bidet nozzle; a controller mounted on one side of the chair and electrically connected to the pump; a power adapter that supplies power to the controller; and a washing water supply control knob switch that is electrically connected to the controller, mounted on the armrest of the chair, and adjusts the strength of the water supplied via the pump.
[0007] One embodiment of the present invention includes a user sensing sensor unit provided on the upper frame of the backrest of a chair, a toilet seat placement detection switch provided on the bottom surface of the toilet seat, a notification speaker electrically connected to a controller and outputting a notification message regarding the position of the toilet seat, and a message storage memory in which the notification message is stored, wherein the controller is electrically connected to the user sensing sensor unit, the toilet seat placement detection switch, the notification speaker, and the message storage memory, and is configured to output the notification message in response to signals from the user sensing sensor unit and the toilet seat placement detection switch.
[0008] In one embodiment of the present invention, the user sensing sensor unit includes a grip cover that covers the upper frame and a capacitive sensor provided inside the grip cover, the toilet seat placement detection switch is provided as a limit switch, the notification messages include the messages "The seat is down" and "Please lower the seat", and the controller can determine whether a signal is input from the toilet seat placement detection switch and whether the toilet seat placement detection switch is in the ON state, whether there is a change in capacitance in the capacitive sensor, and if there is a change in capacitance when the toilet seat placement detection switch is ON, the controller can extract a notification message from the message storage memory and control the system to output a notification message such as "The seat is down" through the notification speaker, and if there is a change in capacitance when the toilet seat placement detection switch is OFF, the controller can extract a notification message from the message storage memory and control the system to output a notification message such as "Please lower the seat" through the notification speaker. [Effects of the Invention]
[0009] The washable portable toilet according to the present invention can be moved and used around patients with mobility impairments, and because it is equipped with a bidet nozzle, patients can wash their own anuses, thereby reducing the burden on caregivers in managing the patient's excretion. [Brief explanation of the drawing]
[0010] [Figure 1] This is a perspective view illustrating the configuration of a washable portable toilet according to one embodiment of the present invention. [Figure 2] This is a perspective view illustrating the configuration of a washable portable toilet according to one embodiment of the present invention. [Modes for carrying out the invention]
[0011] The following description of a washable portable toilet according to an embodiment of the present invention will be made in detail with reference to the attached drawings. Since the present invention can be modified in various ways and may have multiple forms, the drawings illustrate specific embodiments, which are described in detail in the text. However, this is not intended to limit the present invention to any particular disclosure, but rather should be understood to include all modifications, equivalents, or substitutes that fall within the spirit and technical scope of the invention. In describing each drawing, similar reference numerals are used for similar components. Note that the dimensions of structures in the attached drawings are enlarged compared to the actual dimensions to ensure clarity of the present invention.
[0012] While phrases such as "first" and "second" can be used to describe various components, it goes without saying that these components are not limited in any way by these phrases. These phrases are used solely for the purpose of distinguishing one component from another. For example, within the scope of the rights of this invention, the first component may be named as the second component, and similarly, the second component may be named as the first component.
[0013] The terms used in this application are used solely to describe specific embodiments and are not intended to limit the invention. Singular expressions are to be interpreted as including plural unless the context clearly indicates otherwise. In this application, terms such as “includes” or “has” indicate the presence of features, numbers, processes, operations, components, parts, or combinations thereof described in the specification, and do not preclude the existence or possibility of the presence or addition of one or more other features, numbers, processes, operations, components, parts, or combinations thereof.
[0014] Unless otherwise defined, all terms used in this application, including technical or scientific terms, are understood to have the meaning generally understood by a person of ordinary skill in the art to which the invention pertains. Terms defined in commonly used dictionaries are interpreted to be consistent with their meaning in the context of the relevant art and are not to be interpreted in an ideal or overly formal sense unless expressly defined in this application.
[0015] Figure 1 is a perspective view illustrating the configuration of a washable portable toilet according to one embodiment of the present invention.
[0016] Referring to Figure 1, one embodiment of the present invention of a washable portable toilet may include a chair 110, a drain tank 120, a toilet seat 130, a bidet nozzle 140, a water tank 150, a wash water supply unit 160, a controller 170, a power adapter 180, and a wash water supply control knob switch 190.
[0017] The chair 110 may include a toilet seat frame 111 having a circular or square frame structure, a drain tank mounting frame 112 provided inside the toilet seat frame 111, support legs 113 supporting the toilet seat frame 111, a backrest 114, and armrests 115 connected to the backrest 114.
[0018] For example, the drain tank mounting frame 112 may include a pair of wire-type support frames 112a connected to the front frame 111a and rear frame 111b of the toilet seat frame 111.
[0019] The drain tank 120 can be mounted on a drain tank mounting frame 112. For example, the drain tank 120 may be formed in a generally elliptical concave shape, and by forming an edge 121 along the generally elliptical shape, the side or edge 121 of the drain tank 120 can be mounted on a pair of support frames 112a.
[0020] The toilet seat 130 is rotatably connected to the rear side of the toilet seat frame 111 and can be placed on the toilet seat frame 111. For example, the toilet seat 130 may include a hinge 131 connected to the toilet seat frame 111 on the rear side of the bottom surface, and may include a support block 132 supported by the toilet seat frame 111 on the front side of the bottom surface for horizontal holding of the toilet seat 130.
[0021] The bidet nozzle 140 is arranged on the rear side of the toilet seat frame 111 and can project toward the inside of the toilet seat 130. For example, the bidet nozzle 140 may be provided on the toilet seat frame 111 via a nozzle support frame (not shown) provided obliquely on the rear side of the toilet seat frame 111.
[0022] The water tank 150 can be arranged at the lower part of the chair 110 so as to be located below the drain tank 120. For example, the water tank 150 may be provided in a cylindrical shape with a lid provided at the entrance.
[0023] The washing water supply device 160 can include a pump 161 connected to the water tank 150 and a water supply hose 162 connected from the pump 161 to the bidet nozzle 140. The pump 161 can pump the washing water in the water tank 150 and supply the washing water to the bidet nozzle 140 through the water supply hose 162.
[0024] The controller 170 is installed on one side of the chair 110 and can be electrically connected to the pump 161. For example, the controller 170 may be installed on the support leg 113 of the chair 110.
[0025] The power adapter 180 can supply power to the controller 170. For connection of the power adapter 180, the controller 170 may be provided with a power connection terminal socket (not shown).
[0026] The cleaning water supply control knob switch 190 is electrically connected to the controller 170 and is installed on the armrest 115 of the chair 110, allowing adjustment of the water pressure supplied via the pump 161. For example, the cleaning water supply control knob switch 190 may be configured such that when fully rotated in one direction, the cleaning water supply is shut off, and when rotated in the opposite direction, the cleaning water supply strength is adjusted.
[0027] A bidet-type portable toilet according to such an embodiment of the present invention may be provided for patients with mobility impairments.
[0028] When using a bidet toilet, first move the chair 110 to the vicinity of the patient with mobility impairment, then place the drain tank 120 on the drain tank mounting frame 112 of the chair 110, and then place the toilet seat 130 on the toilet seat frame 111.
[0029] In this state, the patient sits on the toilet seat 130 to defecate, and the excrement is collected in the drain tank 120. For anal cleansing, the patient rotates the cleansing water supply control knob switch 190 in the cleansing water supply direction, for example clockwise, to supply cleansing water, and the strength of the cleansing water supply can be adjusted according to the degree of clockwise rotation.
[0030] At this time, the pump 161 of the cleaning water supply unit 160 pumps the cleaning water in the water tank 150 and supplies it to the bidet nozzle 140 through the water supply hose 162. The controller 170 can also adjust the pump pressure of the cleaning water by controlling the output of the pump 161 according to the degree of rotation of the cleaning water supply control knob switch 190.
[0031] The pump 161 delivers cleaning water, which is then sprayed towards the patient's anus via the bidet nozzle 140 to cleanse the anus.
[0032] This washable portable commode according to one embodiment of the present invention can be moved and used near patients with mobility impairments, and is equipped with a bidet nozzle 140, allowing the patient to perform anal cleansing themselves, thus reducing the burden on caregivers during the patient's excretion.
[0033] Figure 2 is a perspective view illustrating the configuration of a washable portable toilet according to another embodiment of the present invention.
[0034] Referring to Figure 2, a bidet toilet according to another embodiment of the present invention is similar to a bidet toilet according to one embodiment of the present invention, except that it further includes a user sensing sensor unit 210, a toilet seat placement detection switch 220, a notification speaker 230, and a message storage memory (not shown). Therefore, the following description will focus on the user sensing sensor unit 210, the toilet seat placement detection switch 220, the notification speaker 230, and the message storage memory.
[0035] The user sensing sensor unit 210 may include a grip cover 211 that covers the upper frame 114a of the backrest 114 of the chair 110, and a capacitive sensor 212 provided on the inner surface of the grip cover 211. For example, the grip cover 211 and the capacitive sensor 212 may be long enough to cover the entire length of the upper frame 114a. In such a user sensing sensor unit 210, when a user grips the grip cover 211, the capacitive sensor 212 can detect a change in capacitance.
[0036] The toilet seat placement detection switch 220 can sense whether or not the toilet seat 130 is placed on the toilet seat frame 111. The toilet seat placement detection switch 220 is provided on the bottom surface of the support block 132 of the toilet seat 130 and can be configured to turn on when the support block 132 is supported by the toilet seat frame 111. For example, the toilet seat placement detection switch 220 may be a limit switch.
[0037] The notification speaker 230 is electrically connected to the controller 170 and can be installed on one side of the chair 110. For example, the notification speaker 230 can be installed on one side of the support leg 113.
[0038] The message storage memory can be located inside the controller 170 and can store notification messages for the user, such as "The seat is down" or "Please lower the seat."
[0039] On the other hand, the controller 170 is electrically connected to the toilet seat placement detection switch 220 and the capacitance sensor 212. When a signal is input from the toilet seat placement detection switch 220, the controller 170 can determine whether the toilet seat placement detection switch 220 is ON or OFF, and the capacitance sensor 212 can determine whether there is a change in capacitance. As a result, the controller 170 first determines whether there is a change in capacitance using the capacitance sensor 212, and at the same time determines whether the toilet seat placement detection switch 220 is ON or OFF. If the toilet seat placement detection switch 220 is ON and there is a change in capacitance, the controller 170 can extract a notification message from the message storage memory and control it so that a notification message such as "The seat is down" is output through the notification speaker 230. If the toilet seat placement detection switch 220 is OFF and there is a change in capacitance, the controller 170 can extract a notification message from the message storage memory and control it so that a notification message such as "Please lower the seat" is output through the notification speaker 230.
[0040] Such a washable portable toilet according to one embodiment of the present invention can provide convenience even when the user, i.e., the patient with mobility impairment, is visually impaired.
[0041] In other words, when a visually impaired user grasps the grip cover 211 provided on the upper frame 114a of the backrest 114 of the chair 110, a change in capacitance occurs through the capacitance sensor 212, and this change is input to the controller 170. The controller 170 determines that there is a change in capacitance and also determines whether the toilet seat placement detection switch 220 is in the ON state. If it is in the ON state, a notification message such as "The seat is down" can be output via the notification speaker 230.
[0042] Furthermore, the controller 170 can determine if there is a change in capacitance and whether the toilet seat placement detection switch 220 is in the ON state. If it is in the OFF state, a notification message such as "Please lower the seat" can be output through the notification speaker 230.
[0043] A washable portable toilet according to this other embodiment of the present invention has the advantage of being able to inform the user whether the toilet seat 130 is lowered or not via a notification message when the user is visually impaired, thereby providing a user-friendly convenience suitable for visually impaired users.
[0044] On the other hand, to improve stain resistance, a stain-resistant coating layer made of a stain-preventing coating composition can be applied to the surface of the drain tank 120 of a washable portable toilet according to one embodiment of the present invention.
[0045] The aforementioned stain-resistant coating composition contains alkoxysilane and lauramidopropyl betaine in a molar ratio of 1:0.01 to 1:2, and the total content of alkoxysilane and lauramidopropyl betaine is 1 to 12% by mass relative to the total aqueous solution.
[0046] The alkoxysilane and lauramidopropyl betaine are preferably in a molar ratio of 1:0.01 to 1:2. If the molar ratio deviates from this range, there is a problem of reduced coatability on the drain tank 120 or increased moisture adsorption on the surface after coating, which can lead to the removal of the coated film.
[0047] The alkoxysilane and lauramidopropyl betaine are preferably present in an amount of 1 to 12% by mass in the total aqueous composition. Below 1% by mass, there is a problem of reduced coatability on the drain tank 120, and above 12% by mass, crystal precipitation is likely to occur due to the increased thickness of the coated film.
[0048] On the other hand, a spray method is preferable for applying this stain-resistant coating composition onto the drain tank 120. Furthermore, the thickness of the final coating film on the drain tank 120 is preferably 700 to 2000 Å. If the thickness of the coating film is less than 700 Å, there is a problem of degradation during high-temperature heat treatment, and if it exceeds 2000 Å, there is a disadvantage that crystal precipitation is likely to occur on the coating surface.
[0049] Furthermore, this stain-resistant coating composition can be prepared by adding 0.1 moles of alkoxysilane and 0.05 moles of lauramidopropyl betaine to 1000 mL of distilled water, and then stirring.
[0050] The reason for limiting the ratio of the constituent components and the coating film thickness as described above is that, after several failed tests, the inventors analyzed the results and found that the ratios provided the optimal anti-fouling coating effect.
[0051] On the other hand, the toilet seat frame 111, drain tank mounting frame 112, support legs 113, and backrest 114 of a washable portable toilet according to one embodiment of the present invention may be made of metal, and a coating layer may be formed on the surfaces of the toilet seat frame 111, drain tank mounting frame 112, support legs 113, and backrest 114 to improve the corrosion resistance and wear resistance of the metal surface.
[0052] The coating material for such a coating layer consists of 26% by weight of poloxamer 188, 25% by weight of salicylate, 10% by weight of hafnium, 12% by weight of magnesium organic acid, 9% by weight of titanium dioxide (TiO2), 12% by weight of aluminum oxide (AlO2), and 6% by weight of a co-solvent, and a coating thickness of 6 μm can be formed.
[0053] Poloxamer 188 and salicylates play roles in corrosion resistance, weather resistance, and discoloration prevention, while hafnium, as a transition metal element with wear resistance and weather resistance, acts to provide excellent waterproofing and corrosion resistance.
[0054] Magnesium organic acid plays a role in imparting alkali resistance and moisture resistance to the surface of the coating film, while titanium dioxide and aluminum oxide are added for fire resistance and chemical stability.
[0055] The reason for limiting the ratio of the constituent components and the coating thickness as described above is that, after several failed attempts, the inventors analyzed the test results and found that the ratios described above showed the optimal effect in improving weather resistance and abrasion resistance.
[0056] On the other hand, the surface of the armrest 115 of a washable portable toilet according to one embodiment of the present invention may be coated with an environmental fragrance substance mixed with a functional oil that contributes to sterilization and user stress reduction.
[0057] The mixing ratio of the aromatic substance and the functional oil is such that 3 to 5% by weight of the functional oil is mixed with 95 to 97% by weight of the aromatic substance, and the functional oil consists of 54% by weight of star anise oil and 46% by weight of benzoin oil.
[0058] Here, it is desirable that the functional oil be mixed with the aromatic substance at a ratio of 3 to 5% by weight. If the mixing ratio of the functional oil is less than 3% by weight, the effect is minimal, and if the mixing ratio of the functional oil exceeds 3 to 5% by weight, the effect does not improve significantly, and in fact, the economic efficiency decreases. Star anise oil and benzoin oil have good effects in relieving stress and eliminating psychological disorders. Therefore, by applying an aromatic substance mixed with these functional oils to the armrest 115, it is possible to sterilize the surface of the armrest 115 and obtain effects such as reducing stress on the user.
[0059] The reason for limiting the constituent components and numerical mixing ratios of environmental fragrance substances and functional oils is that, after several failed attempts, the inventors analyzed the test results and determined that the aforementioned constituent components and numerically limited ratios showed the optimal effect.
[0060] The description of the embodiments presented herein is provided so that a person with ordinary skill in the art of the present invention can utilize or practice the invention. Various modifications to these embodiments are obvious to a person with ordinary skill in the art of the present invention, and the general principles defined herein may be applied to other embodiments without departing from the scope of the invention. Accordingly, the present invention is not limited to the embodiments presented herein and should be interpreted to the maximum extent consistent with the principles and novel features presented herein. [Explanation of Symbols]
[0061] Chair 110 Toilet seat frame 111 Drain tank mounting frame 112 Support leg 113 Backrest 114 Upper frame 114a Armrest 115 Drain tank 120 Edge 121 Toilet seat 130 Hinge 131 Support block 132 Bidet nozzle 140 Water tank 150 Washing water supply unit 160 Pump 161 Water supply hose 162 Controller 170 Power adapter 180 Wash water supply control knob switch 190 User detection sensor unit 210 Grip Cover 211 Capacitive sensor 212 Toilet seat placement detection switch 220 Notification Speaker 230
Claims
1. A chair (110) is provided that is movable and includes a toilet seat frame (111) having a circular or rectangular frame structure, a drain tank mounting frame (112) provided inside the toilet seat frame (111), support legs (113) that support the toilet seat frame (111), a backrest (114), and armrests (115) connected to the backrest (114), A drain tank (120) is placed on a drain tank mounting frame (112), A toilet seat (130) is rotatably connected to the rear side of the toilet seat frame (111) and is placed on the toilet seat frame (111), A bidet nozzle (140) is positioned on the rear side of the toilet seat frame (111) and protrudes toward the inside of the toilet seat (130), A water tank (150) is positioned below the chair (110) so as to be located below the drain tank (120), A washing water supply unit (160) including a pump (161) connected to a water tank (150) and a water supply hose (162) connected from the pump (161) to a bidet nozzle (140), A controller (170) is attached to one side of the chair (110) and electrically connected to the pump (161), A power adapter (180) that supplies power to the controller (170), A bidet toilet includes a flushing water supply knob switch (190) which is electrically connected to a controller (170), mounted on the armrest (115) of a chair (110), and adjusts the strength of the water supplied via a pump (161).
2. A user sensing sensor unit (210) is provided on the upper frame (114a) of the backrest (114) of the chair (110), A toilet seat placement detection switch (220) is provided on the bottom surface of the toilet seat (130), A notification speaker (230) is electrically connected to the controller (170) and outputs a notification message regarding the position of the toilet seat (130), Includes a message storage memory in which the notification message is stored, The controller (170) is electrically connected to the user sensing sensor unit (210), the toilet seat placement detection switch (220), the notification speaker (230), and the message storage memory, and is configured to output the notification message in response to signals from the user sensing sensor unit (210) and the toilet seat placement detection switch (220). A washable portable toilet according to claim 1.
3. The user sensing sensor unit (210) is A grip cover (211) covers the upper frame (114a), and Includes a capacitive sensor (212) provided on the inner surface of the grip cover (211), The toilet seat placement detection switch (220) is composed of limit switches. The aforementioned notification message includes the messages "Seat is down" and "Please lower your seat." The controller (170) receives a signal from the toilet seat placement detection switch (220), can determine whether the toilet seat placement detection switch (220) is ON or OFF, and can determine if there is a change in capacitance using the capacitance sensor (212). If the toilet seat placement detection switch (220) is ON and there is a change in capacitance, the controller can extract a notification message from the message storage memory and control it to output a notification message such as "The seat is down" through the notification speaker (230). If the toilet seat placement detection switch (220) is OFF and there is a change in capacitance, the controller can extract a notification message from the message storage memory and control it to output a notification message such as "Please lower the seat" through the notification speaker (230). The washable portable toilet according to claim 2.