Portable toilet
The portable toilet design addresses comfort and hygiene issues by using a double-bag structure with non-permeable outer and breathable inner bags, along with stabilization and backflow prevention, enhancing user comfort and sanitation.
Patent Information
- Application Number
- JP2023105434
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-06-27
- Publication Date
- 2025-01-16
- Estimated Expiration
- 2043-06-27
AI Technical Summary
Conventional portable toilets lack comfort and hygiene, particularly in terms of efficient moisture disposal and prevention of unsanitary conditions for the user and the surrounding area, while maintaining portability and low cost.
A portable toilet design featuring an outer bag with no air or water permeability, an inner bag with breathability, and a double-bag structure with functional materials for sanitary treatment, including a string for stabilization and adhesive for backflow prevention, ensuring effective moisture management and user comfort.
The design provides improved hygiene and comfort by preventing leakage and unsanitary conditions, effectively managing moisture and odors, and ensuring easy disposal.
Smart Images

Figure 2025005286000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to a portable toilet that is useful primarily in emergencies such as disasters. [Background technology]
[0002] The applicant previously developed the "hygienic disposal storage bag" described in Patent Document 1. This has been implemented to the present day, and is provided as a means of disposing of and storing items that require hygienic handling, such as used diapers. The applicant has been considering whether this technology can be applied and improved to portable toilets.
[0003] In this regard, various portable toilets are available on the market. For example, the "completely sealed toilet waste disposal bag" of Patent Document 2 uses nonwoven fabric on the inside and polypropylene fabric on the outside, and the nonwoven fabric and polypropylene sheet are bonded together, and a waste disposal sheet containing a deodorizing and disinfecting agent containing a water-absorbing polymer as the main component is enclosed inside. The center part of the toilet waste disposal bag is folded and pressed into a home base-shaped bag, and a removable bag with a handle is attached to the outside. Polypropylene components and a complete odor blocking sheet are processed into a bag shape, and a polypropylene string is attached to the top of the bag and tied to tie it, and a completely sealed bag that can completely block moisture and air is used. By tying the mouth of the outer toilet waste disposal bag, complete sealing is realized. The tip shape is devised and the waste is sealed, making it easy to move and dispose of waste in special situations, and it is characterized by being replaceable after each use. This provides a completely sealed toilet waste disposal bag that is effective and convenient in terms of hygiene, movement, and disposal when disposing after using the toilet. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Patent Publication No. 2017-178373 [Patent Document 2] Patent Publication No. 2007-244637 Summary of the Invention [Problem to be solved by the invention]
[0005] However, the above-mentioned conventional portable toilets could be further improved in terms of comfort and hygiene. In particular, there was a demand for a portable toilet that could efficiently dispose of moisture and other substances while maintaining and pursuing high portability and low cost, and that could reduce the risk of unsanitary conditions for the user and those around them. Therefore, the problem that the invention is to solve is to provide a portable toilet that can be used in a relatively hygienic and comfortable condition. [Means for solving the problem]
[0006] As a means for solving the above problem, the portable toilet according to claim 1 is a portable toilet comprising an outer bag having a layer that is neither breathable nor water-permeable, an inner bag that has water-permeability and breathability between the inside and outside of the inner bag, a first opening connected to the outer bag through which a user passes one of their legs when wearing the toilet, a second opening connected to the outer bag through which the user passes the other leg, a fitting stabilization means that prevents the toilet from slipping off while the user is wearing the toilet, and a sealing means that prevents leakage from the outer bag to the outside, wherein the outer bag and the inner bag are joined near the opening of the outer bag and near the opening of the inner bag to form a double bag state, and the toilet is configured to create a space outside the inner bag and inside the outer bag where functional material for sanitary treatment can be placed.
[0007] The portable toilet according to claim 2 is the portable toilet according to claim 1, characterized in that the attachment stabilizing means for preventing the toilet from slipping off while worn by the user is a string, and the string also functions as a sealing means for preventing leakage from the outer bag to the outside. The portable toilet according to claim 3 is the portable toilet according to claim 1 or 2, characterized in that the inner bag is provided with an adhesive portion as a backflow prevention means. Effect of the Invention
[0008] An advantage of the invention is that it provides a portable toilet that can be used with relatively good hygiene and comfort. [Brief description of the drawings]
[0009] [Figure 1] FIG. 2 is a front view showing the structure inside the outer bag of the portable toilet according to the embodiment. [Diagram 2] FIG. 2 is a front view showing the portable toilet of the embodiment in use. [Diagram 3] FIG. 2 is a left side view showing the portable toilet of the embodiment in use. [Figure 4] FIG. 2 is a diagram showing the portable toilet of the embodiment after sealing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiment described below. FIG. 1 is a front view of the portable toilet of the embodiment, showing the structure inside the outer bag. The outer bag 10 is a single layer, and by using polyethylene as the material, the outer bag has a layer that has neither air nor water permeability. This also makes the outer bag relatively less susceptible to noise and scratches. The color is black to prevent dirt from being noticeable. The top of the figure is the opening of the outer bag, and it is a general bag that does not have a three-dimensional shape. Note that the up and down directions when referring to "up" and the like refer to the direction as seen by the wearer, and the front-back and left-right directions also refer to the direction as seen by the wearer. In other words, the head direction of a wearer standing upright is the up direction, the feet direction is the down direction, the chest side is the forward direction, the back side is the backward direction, the right hand side is the right direction, and the left hand side is the left direction.
[0011] The upper left and upper right corners of the outer pouch are provided with openings 11 for passing the legs through, and since in this embodiment there is no particular distinction between the front and back of the portable toilet, any one opening is designated as a first opening connected to the outer pouch through which one of the user's legs passes when wearing the pouch, and the other opening is designated as a second opening connected to the outer pouch through which the user's other leg passes. The size of these openings should be larger than the thickness of the anticipated user's legs, and they should be designed so that they function adequately as openings for the legs, e.g., so that they will not be damaged if they are expanded slightly. It is also advisable to consider the material and thickness and reinforce them with tape, etc., if necessary.
[0012] Two covering parts 12 are formed by extending the upper part of the outer bag, one at the front and one at the back, so as to be sandwiched between the openings 11 for the feet. By having a front covering part and a rear covering part as the two covering parts 12, it is possible to accommodate slight shifting, and the front part also functions as a countermeasure against shifting caused by urine, and the rear part against shifting caused by wet feces or bending over or squatting. The outer bag is further provided with an adhesive portion 13 for narrowing the inner space of the outer bag downward.
[0013] The inner bag 20 is a single layer, and is made of a nonwoven fabric having water permeability and air permeability. The top of the figure is the opening of the inner bag, and does not have a three-dimensional shape. The shape is tapered downward. The outer bag 10 and the inner bag 20 are joined near the opening of the outer bag and near the opening of the inner bag after the functional material for sanitary treatment 60 is placed in the outer bag in advance, and are in a double bag state. The size of the inner bag is basically smaller than the internal space of the outer bag, but the width of this joining part is the same for the outer bag and the inner bag. In this embodiment, the gap between the inner bag and the outer bag other than the above-mentioned width is about 3 to 5 cm. As a result, a part where the functional material for sanitary treatment 60 can be placed is generated in the space 40 outside the inner bag and inside the outer bag, and no means is provided for moving solids between the space 40 outside the inner bag and inside the outer bag and the outside. The latter has the effect of preventing leakage, etc., even if the container is stored in a slightly poor orientation or shaken during transportation from before use to after use.
[0014] By configuring the outer bag, the inner bag, or both, so that they taper downwards, it is possible to prevent the functional material 60 from being unevenly positioned relative to the target, and it is expected that the function can be exerted effectively. The functional material 60 for sanitary treatment that is placed inside the outer bag is a gel that disinfects and absorbs water. Regardless of whether or not a direct measure against bacteria is taken, removing moisture from stool can be expected to have the effect of inhibiting the progression of putrefaction and preventing the rise of odors.
[0015] The space 40 outside the inner bag and inside the outer bag can not only be used to place the functional material 60 for sanitary treatment, but can also function as a space to retain moisture that has been taken from the feces and escaped to the outside of the inner bag. It is desirable that the retention force be due to the water absorption function of the functional material 60 for sanitary treatment, but even if moisture exceeds this capacity, the existence of this space can be expected to have the effect of preventing the progression of decay due to moisture in the feces and preventing odors that leak out and rise without passing through the inner bag.
[0016] Regarding moisture treatment, the capacity of functional materials for hygienic treatment, including water absorption, and size are designed while balancing portability, cost, etc., but generally, portable toilets have an upper limit to the amount of moisture and feces they can handle, and unless this limit is exceeded, they cannot be used hygienically and comfortably. However, with this invention, the range of compatibility can be improved. In other words, the functional materials and the storage capacity of the toilet can be efficiently utilized, and even if there is a slight excess of moisture, most of it will escape from the inner bag, reducing the progression of decay and the rise of odors from the opening of the bag. As a result, it is possible to achieve a relatively excellent hygienic state.
[0017] Inner bag 20 is provided with adhesive 21 as backflow prevention means by bonding the front and back of the inner bag by fusion. Its shape allows the liquid to flow from top to bottom inside the inner bag, but prevents backflow to a certain extent. The method of providing the adhesive as backflow prevention means is not limited to this, and adhesives other than fusion may be used, and even if the shape is simply shaped like a sieve (e.g., in a dashed line shape), it will fall due to gravity when using the toilet, and a certain degree of backflow prevention power can be expected after sealing.
[0018] Furthermore, in this embodiment, the inner bag 20 is also filled with a simple hygienic functional material 50 having a relatively weak water absorption capacity to adjust the water absorption capacity. This can be added later so that it can be used at will. In that case, it is particularly effective when the stool has a high moisture content. The hygienic functional material 50 in this embodiment is selected from the material, and its shape and size are set so that it can prevent backflow, and it is placed before the backflow prevention is applied. In this regard, it is also possible to use a sheet or the like and layer it on the surface to adhere it as a backflow prevention material. In the first place, the inner bag made of nonwoven fabric itself has a certain degree of water absorption, and it is also possible to adjust the thickness, number of layers, processing treatment to impart functionality, etc. However, in principle, it is desirable for moisture to escape from the inner bag as much as possible. It is more desirable to use gravity and the water absorption function of the functional material 60 as a priority, and to adjust, design, and use the inner bag so that the water absorption function is exhibited moderately.
[0019] The inner bag 20 can be configured to be extended upward (as is the case somewhat in the embodiment), or a separate nonwoven fabric or sheet can be attached, and the method of bonding it to the outer bag 10 / covering portion 12 can be devised (such as adjusting the range of fusion depending on at what point the water absorption function of the inner bag itself should be exerted), thereby making the covering portion 12 function even more effectively. Furthermore, the design may be such that moisture or the like that occurs at an unexpectedly high position is guided into the inner bag rather than flowing toward the feet. Next, the string 30, which acts as a stabilizing means to prevent the glove from slipping off while the user is wearing it, is made of polypropylene and is fixed to the top of the opening 11 through which one foot passes, at a point where the length of the string is divided into approximately 3:1. The method of use will be described later, but stable attachment leads to less soiling and hygienic use. The user puts the device on by putting it through their feet, and it is further equipped with a string as a means for stabilizing the device and preventing it from slipping off while the user is wearing it, which has the effect of reducing the occurrence of unsanitary conditions for the user and those around them.
[0020] Fig. 2 is a front view of the portable toilet of the embodiment in use, and Fig. 3 is a left side view of the same. Note that the posture of the user is not the same in both figures. First, the user removes any clothing that will get in the way when using the portable toilet. It is recommended that at least all clothing from the lower half of the body be removed. Shoes and other items may not need to be removed depending on the configuration (size, strength, etc.) of the opening 11 through which the feet pass. Next, the legs are passed through the leg openings 11, and the portable toilet is attached. Furthermore, the long side of the string 30 is passed around from the back and through the opening 11 for the left foot shown in Fig. 3, and this and the short side of the string 30 are tied in front of the covering part 12 corresponding to the front side shown in Fig. 2. Also, the covering part 12 corresponding to the rear side shown in Fig. 3 is sandwiched inside the string. This makes the wearing even more stable. The user relieves themselves while standing, crouching or squatting, ensuring that feces can be expected to be collected within the portable toilet bag (shown as outer bag 10). After using the toilet, the user can remove all or part of the portable toilet, wipe the body and other necessary areas with separately prepared paper or the like, clean up the dirt, and dispose of the resulting waste inside the portable toilet (inside the outer bag 10 in the figure, or more specifically, into the inner bag). At this time, additional functional material 50 can be added if necessary.
[0021] FIG. 4 is a diagram showing the portable toilet of the embodiment after it has been sealed. In the embodiment, the string 30 is used as a means for stabilizing the wearing of the mask, which prevents the mask from slipping off while being worn by the user. The string 30 is also used as a sealing means for preventing leakage from the outer bag to the outside. After removal, the cover 12 is folded into the outer bag 10, then folded so that the opening of the outer bag is closed, and preferably rolled down. At this time, for convenience in storage until further processing, it is advisable to remove the air inside to reduce the volume. Also, since the bag of the portable toilet in the embodiment is not three-dimensional, it may be tempting to fold it so that the left and right directions are separated, but if the bag is expanded in the front and back directions as much as possible to make it three-dimensional and the width in the left and right directions is reduced, it is thought that it will be easier to avoid waste and unevenness in the effectiveness of the functional material. The opening is further sealed with string 30. It is preferable to tie the string 4 or 5 times to make it more secure. This provides a seal to prevent solids, liquids, and gases from leaking out of the outer bag. It is a good idea to further place this in a bag that can block air and water and can also be sealed. Furthermore, if the set includes the aforementioned "sanitary disposal storage bag" that can store around 30 of these items, the storage period after use and until disposal can be kept hygienic. The above describes a form for implementing the invention based on one example of implementation, but this is merely an example, and the content of the implementation means is not limited to this, and it goes without saying that modifications can be made within the scope of the spirit of the invention.
[0022] In addition, in explaining the prior art, the applicant's past technology was described, but this is merely for reference and is not binding. For example, it goes without saying that the structure of squeezing the inner bag is not an essential requirement of the present invention. Regarding the inner bag, which is described in common in both documents, its form and presence or absence should be understood in accordance with the spirit of each document. For example, even if it is not completely structured as a bag, and there are gaps, etc., allowing solid objects to pass between the space outside the inner bag and the space inside the outer bag, it is possible to have a structure that does not violate a certain spirit.
[0023] In the embodiment, the outer bag 10 is black, but even if other colors are used, the effect of not showing dirt may still be achieved. Other variations are possible, such as prioritizing design, or selecting a color such as white that shows dirt and contributes to hygiene risk management, or making the inside of the bag visible for the health management of the user, for example, making part of the outer bag transparent. The material of the outer bag may be polypropylene, etc., and materials that have been additionally processed to prevent air and water from passing through can also be selected. It is even more preferable if the structure can take into consideration damage and holes caused by unintentional contact, etc. The outer bag may have a three-dimensional structure. This may improve ease of use, and may also help prevent the outer bag from being folded when sealing after use, resulting in waste and unevenness in the effectiveness of the functional material. If gussets are provided, grooves and ridges may be easily formed, resulting in waste and unevenness in the effectiveness of the functional material, so it may be possible to provide a bottom plate, for example.
[0024] The inner bag 20 may be made of woven fabric or mesh material in order to meet the requirement of being breathable and water permeable. Depending on the material of the inner bag, it may be possible to expect sound-deadening effects, improved softness to the touch, prevention of dirt splashing, and a lid effect when pleats are formed. Pleats may be intentionally provided. The adhesive portion 21 as the backflow prevention means may be formed by a means other than fusion, may be formed by overlapping the outer bag, or may be provided in a part other than the inner bag. It is preferable that the pleats and backflow prevention means are not so large as to interfere with the containment of feces (the downward movement of the inner bag due to gravity). The functional materials used may take various forms, such as gel, pellets, pulp, sponge, etc., and in some cases, including when the material itself, such as the bag body, is treated, the functions that can be exerted include water absorption, antibacterial measures such as sterilization, deodorization, as well as pH adjustment and fragrance emission.
[0025] The openings for the feet may be made of rubber, so that the hands can be inserted to wipe off dirt on the body before removing the garment after use. Also, belts, strings, etc. may be used. In order to prevent wet waste from flowing down towards the feet, which is particularly important when the diaper is used while standing, a Y-shaped nonwoven fabric may be attached near the opening where the feet are inserted as a means of guiding moisture. The V part of the Y shape can absorb any moisture that may be flowing down towards the feet, and the I part that follows can guide the moisture towards the inner bag. This is expected to have the effect of reducing the contact and friction with the opening where the feet are inserted, which is a relatively strong contact, and also to reinforce this part of the outer bag, which is easily torn by force. In order to obtain the effect of reinforcing the portions that are easily torn, the vicinity of the opening through which the foot passes and other portions may be reinforced with tape or the like, even from the outside of the outer bag. The configuration of the fastening means that prevents the string 30 from slipping off while the user is wearing it, such as whether or not it is fixed to a certain place beforehand, can be varied in consideration of the stability of the fit, ease of wearing, and ease of removal after use. When hanging the opening for the feet, in addition to the fastening and the method of passing the string through the opening, it is also possible to provide an upper loop like when passing a belt through. It is also possible to simply make a hole or slit and pass the string through it, but if it is prone to tearing, it is a good idea to reinforce it with tape or the like.
[0026] The front and back covering parts may be configured to use a string in a similar manner, in addition to being sandwiched. If one string is pre-attached at one location, it will be more comfortable to wear and use if it is attached at about half the length of the string to the upper end of the back covering part. However, it may be desirable to reinforce this so that it does not tear off. In any case, it is desirable to explain to the user which is recommended first, to put the foot through or to use the string, depending on the adopted configuration. In terms of means for stabilizing the wearing of the glove, other than strings, belts, rubber, suspenders, adhesive tape, hook-and-loop fasteners on the upper body clothing, and the front and back can be freely attached and detached like hakama can be used, and these means may be used in combination or as substitutes. Also, these means may be used only to stabilize part of the configuration.
[0027] It is effective that the string 30 also functions as a sealing means after defecation, but it is also possible to provide another sealing means in addition to or instead of the string 30. For example, the use of an adhesive tape or the like is considered. It is also possible to remove unnecessary parts by attaching a part that allows the outer bag to taper downwards. This will require more manufacturing work, but it will be possible to reduce weight and space. Alternatively, it is also possible to use an outer bag that is tapered from the beginning. Conversely, it is also possible to provide an adhesive part on the inner bag that allows it to taper downwards. Since the contents are not flushed down the toilet after use, non-water-soluble paper, wet tissue, cloth, etc. can be used to wipe off dirt. These may also be provided as a set. [Industrial Applicability]
[0028] This portable toilet is convenient for use when going out during disasters, mountain climbing, long-distance car trips, etc. In emergency situations, it can be used in various ways, such as to deal with unexpected vomiting. In addition, when it comes to production, especially when the bags can be produced or procured, it can be said to be an invention with high applicability because it can be used with a little effort. [Explanation of symbols]
[0029] 10 Outer bag 11 Leg opening 20 Inner bag 21 Adhesive joints as a means of preventing backflow 30 String 40 The space outside the inner bag and inside the outer bag 50, 60 Functional materials for sanitary treatment
Claims
1. an outer bag having a layer that has neither air nor water permeability; An inner bag having water permeability and air permeability between the inside and outside of the inner bag; a first opening connected to the outer bag through which a user passes one of their feet when wearing the footwear; a second opening connected to the outer bag through which the other foot of the user passes; A mounting stabilizing means for preventing the device from slipping off while being mounted by a user; a sealing means for preventing leakage from the outer bag to the outside; A portable toilet comprising: This portable toilet is characterized in that the outer bag and the inner bag are joined near the opening of the outer bag and near the opening of the inner bag to form a double bag state, and is configured to create a space outside the inner bag and inside the outer bag where functional materials for sanitary treatment can be placed.
2. The attachment stabilizing means for preventing the user from slipping off while wearing the device is a string, 2. The portable toilet of claim 1, wherein said string also functions as a sealing means to prevent leakage from said outer bag to the outside.
3. 3. The portable toilet according to claim 1, wherein the inner bag is provided with an adhesive portion as a backflow prevention means.
Citation Information
Patent Citations
Defecating implement in emergency
JP1998057273A
breathable urine collector
JP2003521267A
Pants type diaper for playing in the water
JP2005000537A
Sanitary-processing storage bag
JP2017178373A
Completely sealed type sewage disposal bag for toilet
JP2007244637A