Simple toilet
The cardboard simple toilet addresses the issue of structural weakness and complexity in existing models by using a foldable cardboard design with an inner frame for support, resulting in a robust, easy-to-assemble, and lightweight solution for disaster and caregiving applications.
Patent Information
- Application Number
- JP2025000888U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-06-18
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Existing simple toilets used in disaster situations, caregiving, or in the field often have weak structural support, leading to deformation when a person's weight is applied, and they can be complicated to assemble.
A cardboard simple toilet with a robust structure, comprising a main body, an inner frame, and a toilet seat sheet, which can be easily assembled using foldable cardboard sheets and an inner frame that provides support without the need for adhesives.
The solution provides a lightweight, easy-to-assemble toilet that maintains its shape under user weight and can be conveniently stored, suitable for disaster scenarios, outdoor use, and caregiving settings.
Smart Images

Figure 0003251672000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a simple toilet. More specifically, it relates to a simple toilet used in times of disaster, for caregiving, or in the field.
Background Art
[0002] In the prior art of Patent Document 1, the constituent body is formed into a polygonal prism shape by adhering both ends, and a continuous fold at the upper end is bent inward to form an upper end opening. A fold having an engaging piece provided at the lower end is bent and the engaging piece is engaged to removably incorporate a polygonal prism-shaped inner frame body similar to the side wall plate on the inner surface side of the side wall plate having the bottom surface formed.
[0003] In the prior art of Patent Document 2, the toilet seat unit constitutes a part of a foldable simple toilet. The simple toilet includes a toilet body having a first opening formed upward and a toilet seat unit attached above the toilet body. The toilet seat unit includes a toilet seat body and a first concealing member. A second opening is formed in the toilet seat body. The first concealing member extends from the peripheral edge of the second opening into the first opening.
[0004] However, in the prior art of Patent Document 1, since the left and right side walls of the inner frame body are in a valley-folded shape, the force for supporting the outer side wall body from the inside is weak. Therefore, when a person's weight is applied during use, there is a drawback that it is easily deformed. Also, in the prior art of Patent Document 2, adding a concealing member results in a complicated configuration. Also, since the front and rear side walls of the cylindrical member which is the outer frame are in a valley-folded shape, the force for supporting the outer side wall body from the inside is weak. Therefore, when a person's weight is applied during use, there is a drawback that it is easily deformed.
Prior Art Documents
Patent Documents
[0005]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0006] In view of the above circumstances, an object of the present invention is to provide a simple toilet with a robust structure that can be easily assembled and does not deform during use.
Means for Solving the Problems
[0007] The cardboard simple toilet of the first invention comprises a main body, an inner frame inserted into the main body, and a toilet seat sheet. The main body comprises a box-shaped body having a quadrangular shape in plan view and a lid member disposed on the upper surface thereof. The inner frame is a frame body having a quadrangular shape in plan view, and is configured such that its outer dimensions are substantially equal to the inner dimensions of the main body. The toilet seat sheet is a sheet-like member installed on the upper surface of the lid member of the main body. The cardboard simple toilet of the second invention is, in the first invention, characterized in that the main body is composed of a first-stage cardboard plate comprising a front panel, a left side panel foldably connected to the front panel, and a front lid member foldably connected to the front panel, and a second-stage cardboard plate comprising a rear panel, a right side panel foldably connected to the rear panel, and a rear lid member foldably connected to the rear panel, which are combined to form a box-shaped body. The cardboard simple toilet of the third invention is, in the first invention, characterized in that the inner frame is assembled into a frame body by connecting a front plate, a left horizontal plate, a rear plate, and a right horizontal plate to each other. The cardboard simple toilet of the fourth invention is, in the first invention, characterized in that insertion holes are formed at the right end portion of the front panel in the first-stage cardboard plate and the left end portion of the rear panel in the second-stage cardboard plate, and tongue pieces are formed at the right end portion of the left side panel in the first-stage cardboard plate and the left end portion in the second-stage cardboard plate. The cardboard-made simple toilet of the fifth invention, in the second invention, the front lid member is formed in a U shape from a base portion and left and right side edge portions connected to the base portion, and the rear lid member is formed in a U shape from a base portion and left and right side edge portions connected to the base portion. The cardboard-made simple toilet of the sixth invention, in the third invention, vertical insertion grooves are formed in upper portions of both left and right sides of each of the front plate and the rear plate, and vertical insertion grooves are formed in lower portions of both left and right sides of each of the left horizontal plate and the right horizontal plate.
Effects of the Invention
[0008] According to the present invention, there is provided a simple toilet having a robust structure that can be easily assembled and does not lose its shape during use.
Brief Description of the Drawings
[0009]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Modes for Carrying Out the Invention
[0010] Next, embodiments of the present invention will be described based on the drawings. A cardboard-made simple toilet (hereinafter simply referred to as a simple toilet) A according to an embodiment of the present invention has a main body 1, an inner frame 2, and a toilet seat sheet 3 as main components. All of these components are made of cardboard. The cardboard referred to in this specification has the same structure as the description defined in JIS standards (P 0001, Z 0104). That is, it is a material with liners pasted on one or both sides of the corrugated medium paper formed into a waveform. There are various types of cardboard, such as single-sided cardboard, double-sided cardboard, and double-double-sided cardboard. In the present invention, any of these various types of cardboard can be used arbitrarily.
[0011] Figure 1(A) shows the inner frame 2, and Figure 1(B) shows the main body 1. The inner frame 2 is a member that is inserted inside the main body 1 during assembly and use and also functions to support the main body 1 from the inside. In the following description, the terms indicating front, back, left, and right are based on the state of using the simple toilet A (refer to the arrows indicating front, back, left, and right in Figure 1).
[0012] The inner frame 2 shown in Figure 1(A) is composed of a set of a front plate 21 and a rear plate 22, and a set of a left side plate 23 and a right side plate 24. Figure 2(A) is a single view of the front plate 21. The front plate 21 is a square cardboard plate, and vertical insertion grooves 21a are formed at the upper parts of both left and right sides respectively. The rear plate 22 is not shown in Figure 2 but is a cardboard plate with a similar shape. And as shown in Figure 3(A), vertical insertion grooves 22a are formed at the upper parts of both left and right sides of the rear plate 22 respectively.
[0013] Figure 2(B) shows the left side plate 23. The left side plate 23 is a square cardboard plate, and vertical insertion grooves 23a are formed at the lower parts of both sides respectively. The right side plate 24 is not shown in Figure 2 but is a cardboard plate with a similar shape. And as shown in Figure 3(A), vertical insertion grooves 24a are formed at the lower parts of both sides of the right side plate 24. As shown in Figures 3(A) and (B), locking grooves 23b and 24b for fixing the front cover material 15A and the rear cover material 15B of the main body 1 described later are formed at the centers of the upper edges of the left side plate 23 and the right side plate 24.
[0014] As shown in Fig. 3(A), the inner frame 2 is assembled by inserting and connecting the insertion grooves 21a of the front plate 21 and the insertion grooves 22a of the rear plate 22 into the insertion grooves 23a of the left side plate 23 and the insertion grooves 24a of the right side plate 24 to each other. In the combined state, as shown in Fig. 3(B), they are assembled in a grid shape. The width dimension d of the front plate 21 and the rear plate 22 is the same as the inner width dimension of the main body 1 to be described in detail later, and the width dimension w of the left side plate 23 and the right side plate 24 is the same as the inner depth dimension of the main body 1. These inner dimensions d and w may be slightly smaller than the inner dimensions of the main body 1.
[0015] Fig. 1(B) shows the external view of the main body 1, and Fig. 4(A) shows the developed view of the first-stage cardboard 10A constituting the main body 1. The first-stage cardboard 10A is composed of a front panel 11, a left side panel 13 foldably connected to the front panel 11 in a lateral direction, and a front lid member 15A foldably connected to the upper edge of the front panel 11. The front panel 11 and the left side panel 13 are connected at the connection part m1 shown by a dotted line, and they can be folded at the connection part m1. The front panel 11 and the front lid member 15A are connected at the connection part m2 shown by a dotted line, and they can be folded at the connection part m2.
[0016] Insertion holes 11a are formed in two upper and lower stages at the side end part of the front panel 11, and tongue pieces 13b, 13b are formed in two upper and lower stages at the side end part of the left side panel 13. The front lid member 15A is composed of a base part 17 connected to the connection part m2 and side edge parts 18, 18 extending from both sides thereof, and is formed in a U shape in a plan view. Insertion grooves 18a, 18a are formed at the tips of the two side edge parts 18, 18, and the vicinity of the root of the insertion grooves 18a, 18a can be bent. An insertion groove 13a is formed at the center of the upper edge of the left side panel 13.
[0017] The second cardboard sheet 10B has the same configuration as the first cardboard sheet 10A, and as shown in FIG. 5, it is composed of a rear panel 12, a right side panel 14, and a rear cover member 15B. An insertion hole 12a is formed in the rear panel 12, and tongue pieces 14b, 14b are formed in the right side panel 14. Their shapes and numbers are the same as those of the first cardboard sheet 10A. The rear cover member 15B is connected to the upper edge of the rear panel 12, and insertion grooves 18a, 18a are also formed at the tip of the rear cover member 15B.
[0018] FIG. 1(B) shows a state in which the first cardboard sheet 10A and the second cardboard sheet 10B described above are combined. In this state, the tongue piece 14b of the second cardboard sheet 10B fits into the insertion hole 11a of the first cardboard sheet 10A, and the tongue piece 13b of the first cardboard sheet 10A is inserted into the insertion hole 12a of the second cardboard sheet 10B.
[0019] Furthermore, the insertion grooves 18a of the front cover member 15A and the insertion grooves 18a of the rear cover member 15B are fitted into the insertion grooves 13a of the left side panel 13 and the insertion grooves 14a of the right side panel 14. With such an insertion structure, the main body 1 is assembled into a box-shaped body. In the assembled state, the front panel 11, the rear panel 12, the left side panel 13, and the right side panel 14 are all straight and flat. Therefore, even when the user's weight is applied from above, it is difficult to bend inward, and the load-bearing capacity is high. For this reason, the main body 1 does not collapse due to the load from above, and even if an external force is applied obliquely from the side to some extent during use, the main body 1 will not collapse.
[0020] FIG. 4(B) shows the toilet seat sheet 3. The toilet seat sheet 3 is a sheet-like member composed of a rectangular cardboard. An opening 31 is provided in the center of the toilet seat sheet 3, and the four sides on the outside thereof are outer edge portions 32. The opening 31 is a passage space for defecation during use, and the outer edge portion 32 is a portion where the user sits. Prepare several such toilet seat sheets 3 and use them up each time they are used once, and use a new toilet seat sheet 3 every time it is newly used, which is preferable for hygiene.
[0021] Next, the usage method will be described. (1) As shown in FIG. 6(A), attach the storage bag 4 to the assembled inner frame 2. The storage bag 4 is made of a synthetic resin film. When attaching, put most of the storage bag 4 inside the inner frame 2 and cover the bag opening of the storage bag 4 on the upper part of the inner frame 2. It is hygienically preferable to prepare several storage bags 4 and use one storage bag 4 each time, but it can be used as many times as needed. Also, each time it is used, pour the coagulant 5 into the storage bag 4 for use.
[0022] (2) As shown in FIG. 6(B), cover the main body 1 outside the inner frame 2. Also, fold the front cover material 15A and the rear cover material 15B and fix them along the upper edges of the left side plate 13 and the right side plate 14. In this state, since the front and rear ends and the left and right ends of the inner frame 2 in the shape of a crossbeam are in contact with and support the inner wall of the main body 1, the load-bearing capacity against external forces applied from above is extremely high. Therefore, the main body 1 is not easily deformed. And since the storage bag 4 is sandwiched between the main body 1 and the inner frame 2, it will not naturally shift and fall downward.
[0023] (3) As shown in FIG. 7(A), lay the toilet seat 3 on the upper surface of the main body 1. Then, as shown in FIG. 7(B), when folding the front and rear locking pieces 33, 31 of the toilet seat 3 and applying them to the front cover material 15A and the rear cover material 15B of the main body 1, the toilet seat 3 will not move unnaturally during use. (4) FIG. 7(B) shows the simple toilet A whose usage preparation has been completed as described above.
[0024] As described above, the simple toilet A of the present invention can be easily assembled and used, and when it is easily disassembled and each member is folded, it can be stored in a small space. Also, no glue or adhesive tape is required for assembly.
Industrial Applicability
[0025] The simple toilet A of the present invention is made of cardboard, so it is lightweight and can be easily assembled and disassembled. Therefore, it can be conveniently used in situations such as during disasters, outdoor activities, and for replenishment in nursing facilities.
Explanation of Signs
[0026] 1 Main body 2 Inner frame 3 Toilet seat 10A First cardboard sheet 10B Second cardboard sheet 11 Front panel 12 Rear panel 13 Left side panel 14 Right side panel 21 Front board 22 Rear board 23 Left horizontal board 24 Right horizontal board
Claims
1. It is composed of a main body, an inner frame inserted into the main body, and a toilet seat sheet, The main body is composed of a box-shaped body having a rectangular shape in a plan view and a lid material arranged on the upper surface of the box-shaped body, The inner frame is a rectangular frame body in a plan view, and the outer dimensions thereof are configured to be substantially equal to the inner dimensions of the main body, The toilet seat cover is a sheet-like member that is placed on the top surface of the cover material of the main body. A simple toilet made of cardboard.
2. The main body includes a first corrugated board including a front panel, a left side panel foldably connected to the front panel, and a front cover material foldably connected to the front panel; a second corrugated board including a rear panel, a right side panel foldably connected to the rear panel, and a rear cover material foldably connected to the rear panel; are combined to form a box-shaped body.
2. The cardboard portable toilet according to claim 1.
3. The inner frame is assembled to the frame body by joining together a front plate, a left side plate, a rear plate, and a right side plate.
2. The cardboard portable toilet according to claim 1.
4. An insertion hole is formed in the right end of the front panel of the first corrugated board and in the left end of the rear panel of the second corrugated board, A tongue is formed on the right end of the left side panel of the first corrugated board and on the left end of the second corrugated board.
2. The cardboard portable toilet according to claim 1.
5. The front cover member is formed in a U-shape from a base and left and right side edges connected to the base, The rear cover member is formed in a U-shape from a base and left and right side edges connected to the base.
3. The cardboard portable toilet according to claim 2.
6. The front plate and the rear plate are each formed with a vertical insertion groove at the upper portion of each of the left and right sides, The left and right horizontal plates each have a vertical insertion groove formed at the bottom of both left and right sides.
4. The cardboard portable toilet according to claim 3.
Citation Information
Patent Citations
Assembling component made of corrugated cardboard paper and assembled component
JP2006296925A
Toilet seat unit and simple toilet
JP2019213768A