Portable closestool

Abstract

The purpose of the present invention is to provide a portable toilet capable of detecting the amount of excrement discharged by a user. A portable toilet (100) is provided with: a container (30) through which excrement is discharged; and a strain gauge (75) that detects the amount of excretion of the excrement discharged into the container (30). There is at least one strain gauge (75).

Description

Technical Field

[0001] The present invention relates to a portable toilet.

[0002] In addition, this application claims priority based on Japanese Patent Application No. 2023-059010 filed on March 31, 2023, and the entire content of this application is incorporated herein by reference. Background Art

[0003] For example, Patent Document 1 discloses an excretion amount measuring device that measures the excretion amount of excrement discharged into a fixed toilet. The toilet includes a toilet bowl and a U-shaped and tubular trap portion (Japanese: トラップ部) that is connected to the toilet bowl via a telescopic portion and is recessed downward. Excrement discharged into the toilet bowl is temporarily stored in the trap portion.

[0004] The excretion amount measuring device includes a load cell that supports the weight of the trap portion from below. Here, when excrement accumulates in the trap portion of the toilet, the trap portion descends through the telescopic portion, and the detection value of the load cell increases. The excretion amount can be measured based on the increase amount of this detection value.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Patent Laid-Open No. 8-299348 Summary of the Invention

[0008] (I) Technical Problems to be Solved

[0009] However, in a portable toilet used for the care of users such as the elderly, rather than a fixed toilet as described above, when grasping the health status of the user, there is a requirement to measure the excretion amount. However, most portable toilets do not have a trap portion like the toilet disclosed in Patent Document 1, and in this case, the excretion amount measuring device disclosed in Patent Document 1 cannot be used to measure the excretion amount.

[0010] The present invention has been made in view of this point, and its object is to provide a portable toilet capable of detecting the excretion amount of excrement discharged by a user.

[0011] (II) Technical Solution

[0012] The portable toilet of the present invention includes: a container into which excrement is discharged; and at least one strain gauge that detects the excretion amount of excrement discharged into the container.

[0013] The portable toilet can detect the amount of excretion with high accuracy by using a strain gauge. In addition, the strain gauge is excellent for portable toilets due to its high detection accuracy, low temperature sensitivity, fast response time, small size, and long life.

[0014] According to a preferred embodiment of the present invention, the portable toilet includes a discharge volume detector having a load cell. The load cell includes: a strain gauge that is strained by a load applied to the discharge volume detector when discharge of excrement into the container; and a strain gauge provided on the strain gauge.

[0015] According to the above embodiment, the strain gauge provided on the strain body can easily detect the strain of the strain body by easily generating strain in response to the load applied from the container with high accuracy. Therefore, by using a load cell equipped with a strain body, it is possible to detect the amount of excretion with higher accuracy based on the strain of the strain body.

[0016] According to another preferred embodiment of the present invention, the excretion volume detector supports the container from below. The excretion volume detector includes a fixed member, which is fixed in position, and a load member, which is positioned above the fixed member and supports the container. The load cell is sandwiched between the fixed member and the load member.

[0017] According to the above aspect, the strain body of the load cell can be strained according to the load applied from the container to the load member when excrement is discharged into the container.

[0018] According to another preferred embodiment of the present invention, the straining body has a beam shape extending forward and backward.

[0019] According to the above embodiment, by forming the strain body into a beam shape extending forward and backward, strain can be easily generated. Therefore, the excretion volume can be detected with high accuracy. In addition, by forming the strain body into a beam shape, the direction in which the strain body extends can be set as the direction in which the strain body is easily strained, that is, the strain direction.

[0020] According to another preferred embodiment of the present invention, the excretion volume detector includes a first fixing portion that fixes the load cell and the fixing member, and a second fixing portion that fixes the load cell and the load member. When the strain body is not strained, the fixing member is separated from the load member. The device is configured such that when a load exceeding a predetermined maximum load is applied to the excretion volume detector, the strain body is strained, and the fixing member and the load member contact each other at any contact point.

[0021] According to the above embodiment, when a load exceeding the maximum load is applied to the load member, the load member contacts the fixed member at the contact point, thereby preventing the load member from moving below the fixed member and suppressing the maximum strain of the strain body. Consequently, the strain body is less likely to deform permanently, preventing damage to the strain body.

[0022] According to another preferred embodiment of the present invention, when the upper and lower distances between the fixing part and the load part in the state where the strain body is not strained are set as the separation distance, and the maximum distance between the first fixing part and the contact point is set as the maximum distance, the separation distance / the maximum distance is 0.01 to 0.1.

[0023] According to the above embodiment, by setting the separation distance / maximum distance ratio to 0.01 to 0.1, the maximum distance between the first fixing portion and the contact point can be prevented from being excessively long, making the excretion volume detector compact. Furthermore, the strain body can be prevented from excessively straining, making permanent deformation less likely and preventing damage to the strain body.

[0024] According to another preferred embodiment of the present invention, the straining body includes a first contact portion disposed on a lower surface of the straining body, the first contact portion contacting the fixed component when the straining body is fixed to the fixed component by the first fixing portion. A fixed-side space is formed between a portion of the lower surface of the straining body excluding the first contact portion and the fixed component.

[0025] According to the above embodiment, when the straining body is deformed downward toward the fixed member, the deformed portion of the straining body can be released into the fixed side space. Therefore, the portion of the lower surface of the straining body other than the first contact portion is less likely to come into contact with the fixed member, thereby enabling highly accurate detection of the excretion volume.

[0026] According to another preferred embodiment of the present invention, the straining body includes a second contact portion disposed on its upper surface, which contacts the load component when the straining body is secured to the load component by the second securing portion. A load-side space is formed between the load component and a portion of the upper surface of the straining body excluding the second contact portion.

[0027] According to the above embodiment, when the strain body is strained upward toward the load member, the strained portion of the strain body can be released into the load-side space. Therefore, the portion of the upper surface of the strain body other than the second contact portion is less likely to come into contact with the load member, thereby enabling highly accurate detection of the excretion volume.

[0028] According to another preferred embodiment of the present invention, the portable toilet includes a main body having a main body bottom wall that supports the excretion volume detector from below. One of the main body bottom wall and the bottom of the fixing member includes a supporting recess. The other of the main body bottom wall and the bottom of the fixing member includes a supporting protrusion that engages with the supporting recess.

[0029] According to the above aspect, the position of the fixing member relative to the main body bottom wall can be determined by fitting the supporting protrusion into the supporting recess. Therefore, the excretion volume detector can be easily positioned relative to the main body bottom wall, and the excretion volume can be detected with high accuracy.

[0030] According to another preferred embodiment of the present invention, the supporting concave portion has a concave portion-side inclined surface provided on an inner peripheral surface, and the supporting convex portion has a convex portion-side inclined surface provided on an outer peripheral surface and in contact with the concave portion-side inclined surface.

[0031] According to the above embodiment, by making the concave side inclined surface contact the convex side inclined surface, the supporting convex portion can be easily guided in the direction of being inserted into the supporting concave portion. Therefore, the excretion volume detector can be easily positioned relative to the bottom wall of the body and the excretion volume can be detected with high accuracy.

[0032] According to another preferred embodiment of the present invention, the portable toilet comprises: a waste collection portion configured to surround at least a portion of the container when viewed from above; and a toilet seat disposed above the container and the waste collection portion. The waste volume detector supports the container from below. The container includes a container body that is open upward. The container body is separate from the waste collection portion and the toilet seat.

[0033] According to the above embodiment, it is possible to reduce the load applied from the toilet seat to the container, and to reduce the load applied from the excrement receiving portion to the container. Therefore, the excrement volume detector is not subjected to loads from the toilet seat and the excrement receiving portion, but is subjected to loads from the container during excrement discharge. Therefore, when the user sits on the toilet seat, the excrement volume detector is less likely to bear impact loads, and loads are less likely to be transferred from the excrement receiving portion to the container. Therefore, a load corresponding to the amount of excrement discharged into the container is applied to the excrement volume detector, enabling highly accurate excretion volume detection.

[0034] (3) Beneficial effects

[0035] According to the present invention, it is possible to provide a portable toilet capable of detecting the amount of excrement discharged by a user. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a perspective view showing a portable toilet according to an embodiment.

[0037] Figure 2 It is a perspective view showing the portable toilet according to the embodiment, and is a view showing a state in which the lid is removed.

[0038] Figure 3 It is a front sectional view showing the main body, the container, the excrement receiving part, the toilet seat, and the excrement volume detector.

[0039] Figure 4 It is a perspective view showing the main body.

[0040] Figure 5 It is a top view showing the main body.

[0041] Figure 6 This is a front view showing a state where the excretion volume detector supports the container.

[0042] Figure 7 It is a three-dimensional diagram showing a container.

[0043] Figure 8 It is a three-dimensional diagram showing a container.

[0044] Figure 9 It is a perspective view showing the excrement receiving portion.

[0045] Figure 10 It is a perspective view showing an excretion volume detector.

[0046] Figure 11 It is a top view showing the excretion volume detector.

[0047] Figure 12 This is a right side view showing the excretion volume detector.

[0048] Figure 13 It is a perspective view showing a load cell of the excretion volume detector.

[0049] Figure 14 It is a right side cross-sectional view showing the excretion volume detector, and is a diagram showing a state in which the excretion volume detector supports the container and is supported by the main body.

[0050] Figure 15 It is a top view showing the fixing member of the excretion volume detector.

[0051] Figure 16 It is a perspective view showing the rear portion of the main body and the control device.

[0052] Figure 17 It is a perspective view showing a fixing member of the excretion volume detector.

[0053] Figure 18 It is a perspective view showing a load member of the excretion volume detector. DETAILED DESCRIPTION

[0054] An embodiment of the present invention is described below with reference to the accompanying drawings. However, the embodiment described below is merely one embodiment of the present invention and is not intended to limit the present invention. Components and parts that perform the same function are denoted by the same reference numerals, and any duplicate descriptions are omitted or simplified as appropriate.

[0055] Figure 1 、 Figure 2 1 is a perspective view showing the portable toilet 100 of the present embodiment. In the following description, unless otherwise specified, the front, rear, left, right, top, and bottom of the portable toilet 100 refer to the position of the user who uses the portable toilet 100 and sits on the toilet seat 50 described later (see FIG. Figure 2 ) as viewed by a user. In the accompanying drawings, the symbols F, Rr, L, R, U, and D respectively represent the front, rear, left, right, top, and bottom of the portable toilet 100. However, these directions are merely defined for ease of explanation and do not limit the configuration of the portable toilet 100 or the present invention in any way.

[0056] The portable toilet 100 is a toilet mainly used for so-called people who need care, such as the elderly and the disabled, and is a toilet suitable for care. In addition, the portable toilet 100 is not a toilet fixed to the floor, but a movable toilet. Figure 2 As shown, the portable toilet 100 includes a main body 10, legs 20, a container 30, and an excrement receiving portion 40 (see Figure 3 )、Toilet seat 50、Lid 59(Refer to Figure 1 ), armrests 60 and backrest 65.

[0057] Figure 3 It is a front cross-sectional view showing the main body 10 , the container 30 , the excrement receiving part 40 , the toilet seat 50 , and an excretion volume detector 70 to be described later. Figure 4 、 Figure 5 They are respectively a three-dimensional view and a top view of the main body 10. Figure 4 As shown, the main body 10 is formed into a box shape and is open upward. Here, the main body 10 has a portion open upward, namely, a main body opening portion 11. The main body opening portion 11 constitutes the upper portion of the main body 10. The main body 10 has an internal space 12 inside, and the internal space 12 is connected to the open portion of the main body opening portion 11. Figure 5 As shown in FIG, the main body 10 is substantially quadrilateral in plan view.

[0058] like Figure 1As shown, the main body 10 is supported by legs 20. The legs 20 extend downward from the lower portion of the main body 10. In this embodiment, the number of legs 20 is four. The legs 20 are provided at the left front, left rear, right front, and right rear of the main body 10. Figure 1 、 Figure 2 In the figure, the right rear leg 20 is hidden by the main body 10. Although detailed description is omitted, the length of the leg 20 extending downward from the main body 10 is adjustable. By adjusting the length of the leg 20 extending downward from the main body 10, the height of the main body 10 (in other words, the toilet seat 50) can be adjusted to suit the user's physique.

[0059] In this embodiment, if Figure 3 As shown, the interior space 12 of the main body 10 houses a container 30. Container 30 is used by the user of the portable toilet 100 to discharge waste, such as urine and feces. Container 30 is a so-called bucket. Container 30 is mounted in the interior space 12 through the main body opening 11 of the main body 10 and opens upward, as will be described in detail later. Container 30 is configured to be attachable and detachable to the main body 10. The structure of container 30 will be described later.

[0060] A waste collection unit 40 is provided on the upper portion of the main body 10. The waste collection unit 40 is placed on the upper end of the main body 10. The waste collection unit 40 is a component that prevents waste (e.g., urine) from flowing into or adhering to the main body 10. The waste collection unit 40 can receive not only urine but also feces. Specifically, it receives waste that leaks from the container 30 or toilet seat 50. The waste collection unit 40 is a so-called tray. It is detachably mounted on the main body 10, making cleaning of the waste collection unit 40 easier. The detailed structure of the waste collection unit 40 will be described later.

[0061] In this embodiment, a toilet seat 50 is positioned above the main body 10. The toilet seat 50 is positioned above the excrement receiving portion 40. The toilet seat 50 is the seat where the user places their buttocks. The toilet seat 50 is mounted on the excrement receiving portion 40 so that it can rotate about the rear end of the main body 10. The toilet seat 50 is rotatably supported by the excrement receiving portion 40. A hinge (not shown) provided on the excrement receiving portion 40 is attached to the rear end of the toilet seat 50, allowing the toilet seat 50 to rotate relative to the excrement receiving portion 40 via the hinge. The toilet seat 50 can rotate forward and backward. When the toilet seat 50 is rotated forward, it can be positioned horizontally directly above the main body 10. Since the toilet seat 50 is positioned above the container 30, the user can sit on it and discharge excrement into the container 30. On the other hand, when the toilet seat 50 is rotated rearward, it can be erected at the rear of the main body 10. This allows the interior space 12 of the main body 10 to be opened upward. Therefore, with the toilet seat 50 in the upright position, the container 30 can be removed upward from the main body 10. Furthermore, with the toilet seat 50 in the upright position, the container 30 can be attached to the main body 10 from above.

[0062] like Figure 2 As shown, the toilet seat 50 has a seat surface 51 for receiving the user's buttocks. The seat surface 51 constitutes the upper surface of the toilet seat 50. A toilet seat opening 52 is formed in the center of the toilet seat 50. The toilet seat opening 52 passes through the toilet seat 50 from top to bottom.

[0063] Figure 1 The cover 59 shown covers the container 30 above the container 30. The cover 59 is configured to be rotatable relative to the main body 10 with the rear end thereof as an axis and is detachably mounted on the main body 10. In this embodiment, the cover 59 is configured to be foldable, but it may not be foldable. For example, by rotating the cover 59 forward and unfolding it, as shown in FIG. Figure 1 As shown, the toilet seat 50 and the container 30 can be covered by the cover 59. By rotating and folding the cover 59 backward, the toilet seat 50 and the container 30 are opened. Thereby, the user can sit on the toilet seat 50.

[0064] In this embodiment, if Figure 2As shown, armrests 60 are provided on the left and right sides of the toilet seat 50. The armrests 60 are used for placing the elbows of the user sitting on the toilet seat 50. The armrests 60 extend forward and backward. Here, a pair of front and rear armrest pillars 61 and 62 are provided on the left and right parts of the main body 10, respectively, and the armrest pillars 61 and 62 extend upward from the main body 10. Here, the armrest pillar 61 is configured to be away from the front compared to the armrest pillar 62. The armrest 60 is mounted on the pair of front and rear armrest pillars 61 and 62. In this embodiment, the armrest pillars 61 and 62 are configured to be able to move up and down relative to the main body 10, and the lengths of the armrest pillars 61 and 62 extending upward from the main body 10 can be adjusted. By adjusting the lengths of the armrest pillars 61 and 62 extending upward from the main body 10, the height of the armrest 60 can be adjusted.

[0065] A backrest 65 is provided at the rear of the toilet seat 50. The backrest 65 is for a user sitting on the toilet seat 50 to lean on. The backrest 65 is arranged above the rear portion of the main body 10. Here, a pair of left and right backrest pillars 66 and 67 are provided at the rear portion of the main body 10, and the backrest pillars 66 and 67 extend upward from the main body 10. The backrest pillar 66 is provided at the right rear portion of the main body 10. The backrest pillar 67 is provided at the left rear portion of the main body 10 so as to be away from the backrest pillar 66 to the left. The backrest 65 is mounted on the pair of left and right backrest pillars 66 and 67. Here, a backrest opening 69 surrounded by the backrest 65 and the backrest pillars 66 and 67 is provided below the backrest 65. When the cover 59 is rotated rearward, the cover 59 passes through the backrest opening 69.

[0066] In this embodiment, the backrest 65 extends horizontally. The backrest 65 has a shape that is longer in the horizontal direction than in the vertical direction, and longer in the horizontal direction than in the front-to-back direction. When viewed from above, the backrest 65 is concave, with the front surface curving rearward toward the center. A back contact portion 68 is provided on the front surface of the backrest 65. The back contact portion 68 is the area that the user directly leans on. While the back contact portion 68 can be made of a cushioning material, it is made of a non-cushioning material in this embodiment.

[0067] The portable toilet 100 may also include a paper holder for supporting toilet paper and casters provided on the legs 20 for use when moving the portable toilet 100. Furthermore, an anti-slip member formed of a soft material such as rubber or an elastomer may be provided on the ground contact surface of the legs 20.

[0068] The material used for the portable toilet 100 is not particularly limited. In this embodiment, any material, such as metal or resin, can be used for the components of the portable toilet 100, such as the main body 10, legs 20, container 30, waste receiving portion 40, toilet seat 50, lid 59, armrests 60, and backrest 65. Resin materials are preferred, particularly when weight is a concern. For example, any so-called hard resin can be used, such as styrene resins such as acrylonitrile-butadiene resin (ABS), polycarbonate resins such as polycarbonate resin (PC) and PC / ABS alloy resins, polyester resins such as polybutylene terephthalate resin, vinyl chloride resins such as polyvinyl chloride resin (PVC) and chlorinated polyethylene resin, or polyolefin resins such as polypropylene resin (PP) and polyethylene resin (PE). The portable toilet 100 can be manufactured using any molding method, including injection molding, stamping, vacuum forming, blow molding, and molding using a 3D printer.

[0069] In addition, in this embodiment, the portable toilet 100 can measure the amount of excrement discharged by the user. Figure 3 As shown, the portable toilet 100 includes a discharge volume detector 70. The discharge volume detector 70 detects the discharge volume (here, mass, but volume, etc.) of excrement discharged into the container 30. Specifically, the discharge volume detector 70 detects the change in the discharge volume of excrement discharged into the container 30. In the following description, "detecting the change in the discharge volume" will be simply referred to as "detecting the discharge volume." The discharge volume detector 70 is not particularly limited in its placement relative to the portable toilet 100, as long as it can detect the discharge volume. In this embodiment, the discharge volume detector 70 is located below the excrement receiving portion 40.

[0070] Figure 6 30 is a front view showing a state where the excretion amount detector 70 supports the container 30. In this embodiment, Figure 6 As shown, the excretion volume detector 70 is provided on the container 30. Specifically, the excretion volume detector 70 is provided on the bottom of the container 30. Here, the excretion volume detector 70 is arranged below the container 30 so as to support the container 30 from below. The container 30 is placed on the excretion volume detector 70. However, the container 30 may also be supported by being engaged with or suspended from the excretion volume detector 70. For example, the excretion receiving portion 40 may be connected to the container body portion 31 (see FIG. 1 ) of the container 30 to be described later. Figure 3 ) In a separated state, a structure in which the side wall portion 36 and the outer edge portion 37 of the container 30 described later are engaged or suspended is set on the excretion volume detector 70, and the excretion volume detector 70 supports the container 30.

[0071] In this embodiment, when excrement is discharged into the container 30, a load is applied from the container 30 toward the excrement amount detector 70. The excrement amount detector 70 detects the change in the magnitude of the load applied from the container 30 as the excrement amount. Therefore, when the user sits on the toilet seat 50 to discharge excrement, it is preferable that no load other than excrement is applied to the container 30. Therefore, in this embodiment, as shown in FIG. Figure 3 As shown, at least the container body 31 of the container 30 is configured so as not to be in direct contact with the main body 10, the excrement receiving portion 40, and the toilet seat 50 when housed in the internal space 12 of the main body 10. In other words, at least the container body 31 of the container 30 is configured to be separate from the main body 10, the excrement receiving portion 40, and the toilet seat 50.

[0072] Next, a structure in which the container body 31 of the container 30 is separated from the excrement receiving portion 40 and the container 30 is separated from the toilet seat 50 will be described.

[0073] Figure 7 、 Figure 8 3 is a perspective view showing the container 30. In this embodiment, as Figure 7 As shown in FIG. 3 , the container 30 includes a container body 31 and a handle 33. The container body 31 is a container-shaped component that opens upward. Figure 8 As shown, the container body 31 includes a plate-shaped bottom wall 35, a side wall 36 extending upward from the bottom wall 35, and an outer edge 37 provided at the upper end of the side wall 36. The bottom wall 35 constitutes the bottom of the container 30. The bottom wall 35 is circular in plan view, but the shape of the bottom wall 35 is not particularly limited.

[0074] An annular protrusion 38 extending downward is provided on the back side of the bottom wall portion 35. The annular protrusion 38 is a curved plate-shaped component. A recess 38a is formed inside the annular protrusion 38. The recess 38a is surrounded by the annular protrusion 38 and is recessed upward. A portion of the annular protrusion 38 is notched, as will be described in detail later. The notched portion in the annular protrusion 38 is referred to as an anti-rotation recess 39. Here, the bottom of the container 30 has an anti-rotation recess 39. Inclined portions 39a are formed at both circumferential ends of the annular protrusion 38 in the anti-rotation recess 39. The inclined portion 39a inclines outward from the anti-rotation recess 39 as it moves downward. The inclined portion 39a is curved so as to protrude downward. In addition, the number and position of the anti-rotation recesses 39 are not particularly limited. In this embodiment, there are two anti-rotation recesses 39, formed on the front and rear sides of the annular protrusion 38. The two anti-rotation recesses 39 are opposed to each other.

[0075] The side wall portion 36 extends upward from the peripheral end of the bottom wall portion 35. Specifically, it extends outward from the container 30 as it moves upward. A side wall recess 36a is formed in the front portion of the side wall portion 36. The side wall recess 36a is configured such that the inner peripheral surface of the front portion of the container 30 (here, the inner peripheral surface of the front portion of the side wall portion 36) is recessed forward and is inclined so as to extend outward further than the side wall portion 36 other than the side wall recess 36a as it moves upward. In a plan view, the side wall recess 36a is positioned further forward than the bottom wall portion 35.

[0076] like Figure 7 As shown, the outer edge portion 37 is provided to extend from the upper portion of the container body portion 31 (more specifically, the upper end portion of the side wall portion 36) toward the outside of the container 30. The outer edge portion 37 has an annular shape when viewed from above. Here, the outer edge portion 37 includes a transverse edge 37a extending outward from the upper end portion of the side wall portion 36 and a longitudinal edge 37b extending downward from the outer end of the transverse edge 37a. Figure 8 As shown, a plurality of edge ribs 37c are formed between the lateral edge 37a and the longitudinal edge 37b. Here, a space is formed by the upper end of the side wall portion 36, the lateral edge 37a, and the longitudinal edge 37b, and a plurality of edge ribs 37c are provided in the space.

[0077] Although not shown in the figure, a container cover is detachably provided on the upper portion of the container body 31. The container cover can be attached to the upper end portion (here, the outer edge portion 37) of the container body 31 to seal the interior of the container body 31. When the container 30 is not in use, that is, when excrement is not being discharged into the container 30, the container cover is attached to the outer edge portion 37 to seal the container body 31 from above. Figure 7As shown, the handle 33 is, for example, a curved rod-shaped member mounted on the annular outer edge 37. Here, the handle 33 is connected to and mounted on the left and right portions of the outer edge 37. The handle 33 is rotatable relative to the outer edge 37. In this embodiment, the user can grasp the handle 33 to remove the container 30 from the main body 10 or store it in the main body 10. Furthermore, when the container 30 is stored in the main body 10, the handle 33 may or may not abut against the excrement receiving portion 4. For example, abutment of the handle 33 against the excrement receiving portion 40 can make the container 30 less susceptible to shaking. It is believed that by making the container 30 less susceptible to shaking, the accuracy of excrement detection using the excrement volume detector 70 can be improved. However, abutment of the handle 33 against the excrement receiving portion 40 may cause variations in the load applied to the container 30. Therefore, for example, the handle 33 can abut against the excrement receiving portion 40 to such an extent that the accuracy of excrement volume detection using the excrement volume detector 70 is not reduced. For example, the center of gravity of the handle 33 (here, the center portion of the handle 33) can abut against the excrement receiving portion 40 to such an extent that it lightly rests on the excrement receiving portion 40. Furthermore, the handle 33 can be detachable from the container body 31. When the container 30 is stored in the main body 10, the handle 33 can be detached from the container body 31.

[0078] Figure 9 : is a perspective view showing the excrement receiving portion 40. In this embodiment, as Figure 9 As shown in FIG. 1 , an excrement receiving opening 41 is formed in the central portion of the excrement receiving portion 40. The excrement receiving opening 41 passes through the excrement receiving portion 40 vertically. Figure 3 As shown, the excrement receiving opening 41 has an opening area larger than the toilet seat opening 52 of the toilet seat 50. Figure 9 As shown, the excrement receiving portion 40 has a plate-shaped and annular bottom wall 42, an inner peripheral wall 43, an outer peripheral wall 44, a transverse wall 45, and a longitudinal wall 46. Although not shown in the figure, the front portion of the bottom wall 42 is raised upward compared to the portion other than the front portion. The inner peripheral wall 43 extends upward from the inner peripheral edge of the bottom wall 42. The portion surrounded by the inner peripheral wall 43 is the excrement receiving opening 41. The outer peripheral wall 44 extends upward from the outer peripheral edge of the bottom wall 42. Here, as shown in FIG. Figure 3As shown, the vertical length of the outer peripheral wall 44 is longer than the vertical length of the inner peripheral wall 43. The upper end of the outer peripheral wall 44 is positioned higher than the upper end of the inner peripheral wall 43. Alternatively, a protrusion (not shown) may be provided at the rear of the excrement receiving portion 40, projecting forward from the transverse wall 45 and upward from the bottom wall 42. The handle 33 of the container 30 may also abut against this protrusion. In this case, the protrusion may be positioned so as not to abut against the center portion of the handle 33 (the portion easily grasped by the user). For example, two protrusions may be provided, abutting against the left and right portions of the handle 33, excluding the center portion.

[0079] The transverse wall 45 extends from the upper end of the outer peripheral wall 44 to the side (eg, horizontally). The transverse wall 45 extends from the upper end of the outer peripheral wall 44 to the outside of the excrement receiving portion 40. Figure 9 As shown, the horizontal wall 45 is a plate-shaped and annular member. The vertical wall 46 extends upward from the outer peripheral edge of the horizontal wall 45. Here, the vertical wall 46 extends upward from the left end of the horizontal wall 45 and extends upward from the right end of the horizontal wall 45.

[0080] In this embodiment, if Figure 3As shown, when the container 30 is housed in the interior space 12 of the main body 10 and supported by the excrement volume detector 70, the container body 31 of the container 30 is separated from the excrement receiving portion 40. The following description shows the state in which the container 30 is supported by the excrement volume detector 70. The container body 31 is not in contact with the excrement receiving portion 40. Here, at least a portion of the outer edge 37 of the container 30 is disposed within the excrement receiving portion 40 and is separated from the excrement receiving portion 40 (specifically, the bottom wall 42, inner peripheral wall 43, outer peripheral wall 44, transverse wall 45, and longitudinal wall 46) within the excrement receiving portion 40. Here, the outer edge 37 of the container 30 is disposed above the bottom wall 42 and inner peripheral wall 43 of the excrement receiving portion 40. Specifically, the outer edge of the outer edge 37 (here, the longitudinal edge 37b) is positioned outward from the inner peripheral wall 43 of the excrement receiving portion 40 and, when viewed from above, overlaps with the bottom wall 42 of the excrement receiving portion 40. The outer peripheral wall 44 of the excrement receiving portion 40 is positioned outward from the outer edge 37 of the container 30 and extends upward to near the upper end of the outer edge 37. Furthermore, the longitudinal wall 46 of the excrement receiving portion 40 is positioned outward from the outer edge 37 of the container 30, with the upper end of the longitudinal wall 46 positioned higher than the container 30. Consequently, most of the outer edge 37 of the container 30 is located within the excrement receiving portion 40. Consequently, excrement scattered from the outer edge 37 of the container 30 can be received by the excrement receiving portion 40. Furthermore, in this embodiment, at least the container body 31 of the container 30 only needs to be separable from the excrement receiving portion 40. For example, the handle 33 does not need to be separable from the excrement receiving portion 40. However, the handle 33 may also be separable from the excrement receiving portion 40, that is, the entire container 30 may also be separable from the excrement receiving portion 40.

[0081] In this embodiment, if Figure 3 As shown, a toilet seat 50 is placed on the upper surface of the horizontal wall 45 of the excrement receiving portion 40. Here, the toilet seat 50 has a seat wall 55, an inner peripheral wall 56, and an outer peripheral wall 57. The upper surface of the seat wall 55 is a seat surface 51. Figure 2 As shown, the seat wall 55 is plate-shaped and annular, and is inclined downward as it moves toward the inside of the toilet seat 50. Figure 3 As shown, the toilet seat inner peripheral wall 56 extends downward from the inner peripheral edge of the seat surface wall 55. The portion surrounded by the toilet seat inner peripheral wall 56 constitutes the toilet seat opening 52. The toilet seat outer peripheral wall 57 extends downward from the outer peripheral edge of the seat surface wall 55. The lower end of the toilet seat outer peripheral wall 57 is positioned higher than the lower end of the toilet seat inner peripheral wall 56. The lower end of the toilet seat outer peripheral wall 57 rests on the upper surface of the horizontal wall 45 of the excrement receiving portion 40.

[0082] In the toilet seat 50 of this embodiment, the seat surface wall 55, the inner peripheral wall 56, and the outer peripheral wall 57 are continuous and curved. The portion surrounded by the seat surface wall 55, the inner peripheral wall 56, and the outer peripheral wall 57 is referred to as the toilet seat recess 58. The toilet seat recess 58 has an upwardly concave shape.

[0083] With the toilet seat 50 positioned in the waste receiving portion 40, the container 30 is separated from the toilet seat 50. At this point, the container body 31 of the container 30 is positioned below the seat wall 55 of the toilet seat 50. The toilet seat inner wall 56 of the toilet seat 50 is positioned separately within the upper end of the container body 31. The toilet seat inner wall 56 is positioned further inward than the side walls 36 of the container body 31, separated from the side walls 36. Furthermore, the outer edge 37 of the container 30 is positioned below the seat wall 55 of the toilet seat 50, separated from the seat wall 55. The handle 33 of the container 30 is positioned within the toilet seat recess 58 of the toilet seat 50, separated from the seat wall 55, the inner wall 56, and the outer wall 57 of the toilet seat 50.

[0084] In this embodiment, if Figure 4 As shown, the main body 10 has a main body bottom wall 15, a main body inner peripheral wall 16, a main body upper wall 17 and a main body outer peripheral wall 18. Figure 5 As shown, the main body bottom wall 15 constitutes the bottom of the main body portion 10. Figure 3 As shown, a container 30 is disposed above the main body bottom wall 15. The main body inner peripheral wall 16 extends upward from the periphery of the main body bottom wall 15. The space enclosed by the main body bottom wall 15 and the main body inner peripheral wall 16 is the internal space 12. Furthermore, the upper end of the main body inner peripheral wall 16 forms the main body opening 11. A stepped portion 16a is formed in the main body inner peripheral wall 16. The stepped portion 16a is arranged so that the upper side is positioned further outward than the lower side.

[0085] The main body upper wall 17 extends from the upper end of the main body inner peripheral wall 16 to the side (for example, horizontally). The main body upper wall 17 extends from the upper end of the main body inner peripheral wall 16 toward the outside of the main body 10. Figure 3 As shown, an excrement receiving portion 40 is placed on the upper wall 17 of the main body. Figure 5 As shown, a cylindrical leg tube portion 17a extending vertically is provided on the left front portion, the left rear portion, the right front portion and the right rear portion of the main body upper wall 17. Figure 1 As shown, the leg 20 is embedded in the leg tube portion 17a. Figure 4 As shown, the main body outer peripheral wall 18 extends downward from the outer peripheral edge of the main body upper wall 17 .

[0086] Next, the excretion amount detector 70 will be described. Figure 3As shown, the excretion volume detector 70 is configured to support the container 30 from below while being housed in the internal space 12 of the main body 10. The excretion volume detector 70 is supported by the main body bottom wall 15 of the main body 10. Here, the excretion volume detector 70 is placed on the main body bottom wall 15.

[0087] Figure 10 、 Figure 11 、 Figure 12 They are a perspective view, a top view, and a right side view showing the excretion volume detector 70, respectively. Figure 13 It is a perspective view showing the load cell 71 of the excretion volume detector 70 . Figure 14 1 is a right side sectional view of the excretion amount detector 70, showing a state in which the excretion amount detector 70 supports the container 30 and the excretion amount detector 70 is supported by the main body bottom wall 15 of the main body 10. Figure 13 As shown, the excretion volume detector 70 includes a strain gauge 75. Strain refers to the amount of deformation of a material, which is caused by its expansion or contraction in proportion to an external force applied to the material. The strain gauge 75 is a sensor that detects strain. The excretion volume detector 70 detects the excretion volume using the strain gauge 75 based on the load applied to the container 30 when excrement is discharged therein, and based on the strain generated by the load.

[0088] The specific type of strain gauge 75 is not particularly limited. For example, any type of strain gauge, such as a uniaxial or multiaxial foil strain gauge, a wire strain gauge, a semiconductor strain gauge, or a self-temperature compensating strain gauge, can be used as the strain gauge 75. Of these, a foil strain gauge is preferably used as the strain gauge 75 from the perspective of moisture resistance, while a self-temperature compensating strain gauge is preferably used from the perspective of detection accuracy.

[0089] In this embodiment, the excretion volume detector 70 includes a load cell 71 incorporating a strain gauge 75. The load cell 71 is composed of the strain gauge 75 and includes a strain body 73. The strain body 73 is deformed by an external force (here, the load from the container 30), generating strain. The strain body 73 is a long, beam-shaped structure extending forward and backward. A strain hole 73a is formed in the strain body 73, extending horizontally. This strain hole 73a facilitates strain generation at a specific location on the strain body 73. However, the shape of the strain body 73 is not particularly limited. The strain gauge 75 is mounted on the strain body 73. The strain gauge 75 is fixed to the strain body 73 by adhesive or other fixing means, and the strain gauge 75 also strains in conjunction with the strain of the strain body 73. In this embodiment, the strain gauge 75 is located in the center portion of the upper surface of the strain body 73, opposite the strain hole 73a. However, the location of the strain gauge 75 relative to the strain body 73 is not particularly limited; for example, it may be located on the lower surface of the strain body 73 or on the surface inside the strain hole 73a. Furthermore, the number of strain gauges 75 is not limited to one; multiple strain gauges may be provided. If multiple strain gauges 75 are provided, they may be provided on both the upper and lower surfaces of the strain body 73. Furthermore, in this embodiment, the number of load cells 71 is one, but multiple load cells may be provided.

[0090] The material forming the strain body 73 is not particularly limited, and any metal or resin can be used. From the perspective of suppressing thermal expansion caused by temperature, it is preferable to use a metal material as the material forming the strain body 73. Examples of metal materials that can be used include aluminum alloys, stainless steel alloys, copper alloys, and tin alloys. Among these metal materials, aluminum alloys and stainless steel alloys are preferably used from the perspective of being less susceptible to rust and permanent deformation.

[0091] In the load cell 71 of this embodiment, the strain body 73 is deformed and strained by the load applied from the container 30 when excrement is discharged into the container 30, and the strain gauge 75 is also strained. The resistance value of the strain gauge 75 changes according to the amount of strain. The resistance value of the strain gauge 75 is determined by the control device 110 (see FIG. 1 ) described later. Figure 15 ) detection, and the change in the resistance value is used as the discharge amount (here, mass).

[0092] In this embodiment, if Figure 12 As shown in FIG. 1 , the excretion amount detector 70 includes a fixing member 76 and a load member 77. The fixing member 76 is a member whose position is fixed. Figure 3As shown in FIG. 1 , the portion of the excretion volume detector 70 that is directly supported by the main body 10. The load member 77 is a portion that applies a load from the container 30. In this embodiment, the load member 77 is disposed above the fixing member 76. The load member 77 and the fixing member 76 are disposed so as to overlap each other. In addition, the shapes of the fixing member 76 and the load member 77 are not particularly limited, but may be as follows: Figure 10 As shown, here it is in the shape of a disk, as Figure 11 As shown in FIG, it is circular when viewed from above. In this embodiment, as Figure 14 As shown, the cross-sectional shape of the fixing member 76 and the load member 77 is a downward U-shape.

[0093] The materials forming the fixing member 76 and the load member 77 are not particularly limited. In this embodiment, any material, such as metal or resin, can be used to form the fixing member 76 and the load member 77. Resins are preferred from a weight perspective. Examples of resins include styrene resins such as acrylonitrile-butadiene resin (ABS), polycarbonate resins such as polycarbonate resin (PC) and PC / ABS alloy resins, polyester resins such as polybutylene terephthalate resin, vinyl chloride resins such as polyvinyl chloride resin (PVC) and chlorinated polyethylene resin, and polyolefin resins such as polypropylene resin (PP) and polyethylene (PE). Among these hard resins, polypropylene resin, which is a relatively soft or impact-resistant polyolefin resin, is preferred for its water resistance and ability to prevent damage to the load cell 71 caused by impact loads. Furthermore, the fixing member 76 and the load member 77 can be manufactured using any molding method, such as injection molding, stamping, vacuum forming, blow molding, or molding using a 3D printer. Among these molding methods, injection molding is preferably used from the viewpoint of productivity.

[0094] Here, the load sensor 71 is sandwiched between the load member 77 and the fixing member 76. When viewed from above, the load sensor 71 is positioned at the center of the load member 77 and at the center of the fixing member 76. However, the position of the load sensor 71 is not limited to the center of the load member 77 and the fixing member 76; it can also be positioned forward or rearward of the center. Adjusting the position of the load sensor 71 relative to the load member 77 and the fixing member 76 allows for adjustment of the detection sensitivity of the excretion volume detector 70. In this embodiment, the excretion volume detector 70 includes a first fixing portion 81 that secures the load sensor 71 to the fixing member 76, and a second fixing portion 82 that secures the load sensor 71 to the load member 77. The first fixing portion 81 secures the rear portion of the strain gauge 73 of the load sensor 71 (here, the portion behind the strain gauge 75) to the fixing member 76. The first fixing portion 81 secures the load sensor 71 and the fixing member 76 from below. In this embodiment, the number of the first fixing parts 81 is two, but it may be one, or three or more. The structure of the first fixing part 81 is not particularly limited.

[0095] Here, the first fixing portion 81 is a so-called screw. The first fixing portion 81 has a first head portion 81a and a first rod-shaped portion 81b extending upward from the first head portion 81a. An external thread is formed on the circumferential surface of the first rod-shaped portion 81b. In this embodiment, a first contact portion 83a and a first fixing hole 83b are formed in the strain body 73. The first contact portion 83a is a surface on which the first fixing portion 81 is provided, and constitutes the lower surface of the rear portion of the strain body 73. The first contact portion 83a contacts the fixing member 76 when the fixing member 76 is fixed to the force sensor 71. The first fixing hole 83b is formed in the first contact portion 83a. An internal thread that is threadedly engaged with the first rod-shaped portion 81b is formed on the inner circumferential surface of the first fixing hole 83b.

[0096] In addition, the fixing member 76 is provided with a fixed side fixing portion 76b to which the load cell 71 is fixed. A fixing hole 76a is formed in the fixed side fixing portion 76b. Figure 14As shown, multiple ribs 76c are formed around the fixed-side fixing portion 76b, surrounding the fixed-side fixing portion 76b. In this embodiment, the load cell 71 is positioned on the fixing member 76 such that the first fixing hole 83b of the strain body 73 overlaps the fixing hole 76a of the fixing member 76. Furthermore, by inserting the first rod-shaped portion 81b into the first fixing hole 83b and the fixing hole 76a and fastening them together, the load cell 71 is secured to the fixing member 76 via the first fixing portion 81. Furthermore, when the load cell 71 is secured to the fixing member 76, the first contact portion 83a of the strain body 73 contacts the upper surface of the fixing member 76 (here, the fixed-side fixing portion 76b), and portions of the lower surface of the strain body 73 other than the first contact portion 83a are configured not to contact the upper surface of the fixing member 76. Here, in order to prevent deformation or damage of the fixing member 76 due to excessive tightening force of the first fixing portion 81 on the fixing member 76 , a metal sleeve may be provided on the inner peripheral surface of the fixing hole 76 a of the fixing member 76 .

[0097] Figure 15 FIG. 7 is a top view showing the fixing member 76 of the excretion amount detector 70. In this embodiment, as shown in FIG. Figure 15 As shown, an abutment wall 76d extending upward from the fixing member 76 is provided around the fixed-side fixing portion 76b. The abutment wall 76d is a plate-shaped member with a flat surface. The flat surface of the abutment wall 76d extends in the longitudinal direction (here, the front-to-back direction) of the load sensor 71 (in other words, the strain body 73). In other words, the abutment wall 76d is arranged so that the flat surface extends along the longitudinal direction of the load sensor 71. The strain body 73 of the load sensor 71 is provided with an abutment surface 73b that abuts the abutment wall 76d. The abutment surface 73b is a flat surface. The abutment wall 76d and the abutment surface 73b are in contact with each other through their flat surfaces. When the load sensor 71 is fixed to the fixing member 76, the abutment surface 73b of the strain body 73 abuts the abutment wall 76d of the fixing member 76, making it easier to determine the position of the load sensor 71 relative to the fixing member 76. In this manner, the load cell 71 may be fixed to the fixing member 76 by the first fixing portion 81 in a state where the contact surface 73 b contacts the contact wall 76 d .

[0098] Furthermore, in this embodiment, a strain body protrusion 73c is provided on the surface of the strain body 73 on the opposite side to the abutting surface 73b. Unlike the abutting surface 73b, the strain body protrusion 73c protrudes laterally from the strain body 73. Therefore, for example, if the load cell 71 is to be arranged on the fixed component 76 in such a manner that the orientation of the strain body 73 becomes opposite to the left and right, the strain body protrusion 73c contacts the abutting wall 76d. Thus, it is easy to determine whether the orientation of the strain body 73 relative to the fixed component 76 is wrong. The strain body protrusion 73 plays the role of covering the strain gauge 75 and the cable 111 described later (see Figure 15 ) of the connecting portion, a waterproof coating is applied inside. Thus, the strain body protrusion 73 plays a role in preventing disconnection caused by contact from the outside, malfunction caused by the intrusion of moisture or water, etc.

[0099] like Figure 14 As shown, the second fixing portion 82 secures the front portion of the strain body 73 of the load cell 71 (here, the portion forward of the strain gauge 75) to the load member 77. The second fixing portion 82 secures the load cell 71 and the load member 77 from above. In this embodiment, there are two second fixing portions 82, but the number may be one, or three or more. The structure of the second fixing portion 82 is not particularly limited.

[0100] Here, the second fixing portion 82 is a so-called screw. The second fixing portion 82 has a second head 82a, a second rod-shaped portion 82b extending downward from the second head 82a, and a nut 82c. An external thread is formed on the circumferential surface of the second rod-shaped portion 82b. An internal thread that is threadedly engaged with the second rod-shaped portion 82b is formed on the inner circumferential surface of the nut 82c. In this embodiment, a second contact portion 84a and a second fixing hole 84b are formed in the strain body 73. The second contact portion 84a is a surface on which the second fixing portion 82 is provided, and constitutes the upper surface of the front portion of the strain body 73. The second contact portion 84a contacts the load component 77 when the load component 77 is fixed to the force sensor 71. The second fixing hole 84b is formed in the second contact portion 84a.

[0101] In addition, the load member 77 is formed with a fixing hole groove 77a and a fixing hole 77b. The fixing hole groove 77a is formed on the upper surface of the load member 77 and is recessed downward. The fixing hole 77b extends downward from the fixing hole groove 77a and passes through the load member 77 from top to bottom. When viewed from above, the fixing hole 77b is smaller than the fixing hole groove 77a. Here, the load cell 71 is arranged on the load member 77 so that the second fixing hole 84b of the strain body 73 overlaps with the fixing hole 77b of the load member 77. Then, the second rod-shaped portion 82b is inserted into the second fixing hole 84b and the fixing hole 77b so that the second rod-shaped portion 82b passes through the load member 77 from top to bottom. Then, the nut 82c is tightened to the second rod-shaped portion 82b from below the load member 77. In this way, the load cell 71 is fixed to the load member 77 via the second fixing portion 82. Furthermore, when the load cell 71 is fixed to the load member 77, the second contact portion 84a of the strain body 73 contacts the lower surface of the load member 77, while portions of the upper surface of the strain body 73 other than the second contact portion 84a are configured not to contact the lower surface of the load member 77. When the load cell 71 is fixed to the load member 77, the second head portion 82a of the second fixing portion 82 is disposed within the fixing groove 77a of the load member 77. To prevent deformation or damage to the load member 77 caused by excessive tightening force applied by the second fixing portion 82, metal sleeves may be provided on the inner circumferential surfaces of the fixing groove 77a and fixing hole 77b of the load member 77.

[0102] In this embodiment, the fixing member 76 and the load member 77 are separated via the load cell 71. Here, the upper surface of the fixing member 76 is separated from the lower surface of the load member 77. When a load is applied from the container 30 placed on the load member 77, the strain body 73 of the load cell 71 is strained (for example, Figure 14 Strain occurs in the direction of arrow A1). At this time, the strain body 73 is strained, causing the load member 77 to move relative to the fixed member 76 (typically, to be slightly tilted). At this time, the strain direction of the strain body 73 changes depending on the position of the load member 77 to which the load is applied, and as a result, the tilt direction of the load member 77 changes. Moreover, when the load applied to the load member 77 from the container 30 is a predetermined maximum load (hereinafter referred to as the assumed maximum load), the load member 77 and the fixed member 76 contact at the contact point P1. This contact point P1 changes depending on the position of the load member 77 to which the load is applied. In this way, at the contact point P1, the fixed member 76 and the load member 77 are in contact, and even when a load exceeding the assumed maximum load is applied, excessive strain of the strain body 73 can be suppressed, and the load sensor 71 can be less likely to be damaged.

[0103] Here, when no load is applied to the load member 77, that is, when the strain body 73 is not strained, the upper surface of the fixing member 76 and the lower surface of the load member 77 are separated in a parallel manner. The distance between the fixing member 76 and the load member 77 at this time is referred to as the separation distance H1. The separation distance H1 is the vertical distance between the upper end of the fixing member 76 and the lower end of the load member 77 when no load is applied to the load member 77. In addition, the maximum distance from the first fixing portion 81 to the contact point P1 is referred to as the maximum distance L1. Since the contact point P1 refers to a point whose position changes according to the assumed maximum load of the load applied to the load member 77 as described above, the term "maximum distance L1" is used here. The maximum distance L1 is typically the distance between the contact point P1 and the first fixing portion 81 when the contact point P1 is located at the front end of the fixing member 76 and the load member 77.

[0104] In this embodiment, the separation distance H1 / maximum distance L1 is 0.01 to 0.1, preferably 0.02 to 0.08, particularly preferably 0.03 to 0.06, and for example 0.04. For example, when the maximum distance L1 is 120 mm, the separation distance H1 is, for example, 1.2 mm to 12 mm, preferably 2.4 mm to 9.6 mm, and particularly preferably 3.6 mm to 7.2 mm.

[0105] In addition, although not shown in the figure, in order to prevent deformation or damage of the load sensor 71 caused by the impact caused by the load applied to the excretion volume detector 70, components and structures that absorb the above-mentioned impact can also be provided at the fixing component 76 and the load component 77 located at the contact point P1 and its surroundings.

[0106] In this embodiment, if Figure 14 As shown, when the load cell 71 is fixed to the load member 77, the portion of the load cell 71 other than the second contact portion 84a of the strain body 73 is configured to not contact the load member 77. Here, an upwardly recessed load recess 85 is formed on the lower surface of the load member 77. The load recess 85 is formed at a position that overlaps with the portion of the upper surface of the strain body 73 other than the second contact portion 84a when viewed from above. In this embodiment, the space between the load member 77 and the upper surface of the strain body 73 is referred to as the load-side space 85a. The load-side space 85a is formed within the load recess 85. Thus, even if the rear portion of the strain body 73 is strained upward, the rear portion of the strain body 73 is strained toward the load-side space 85a within the load recess 85. Therefore, when the strain body 73 is strained, the strain gauge 75 provided on the upper surface of the strain body 73 is less likely to come into contact with the load member 77, thereby preventing damage to the strain gauge 75.

[0107] Furthermore, in this embodiment, when the load cell 71 is fixed to the fixed member 76, portions of the load cell 71 other than the first contact portion 83a of the strain body 73 are configured to not contact the fixed member 76. A downwardly recessed fixing recess 86 is formed on the upper surface of the fixed member 76. The fixing recess 86 is formed at a position that overlaps with a portion of the lower surface of the strain body 73 other than the first contact portion 83a when viewed from above. In this embodiment, the space between the fixed member 76 and the lower surface of the strain body 73 is referred to as the fixing side space 86a. The fixing side space 86a is formed within the fixing recess 86. Thus, even if the front portion of the strain body 73 is strained downward, the front portion of the strain body 73 is strained toward the fixing side space 86a within the fixing recess 86. Therefore, when the strain body 73 is strained, it is less likely to contact the fixed member 76, thereby improving the accuracy of excretion volume detection.

[0108] In addition, in this embodiment, the bottom surface 87 forming the fixing recess 86 gradually becomes lower as it moves away from the first fixing portion 81. Here, an operation hole 87a is formed in the portion of the bottom surface 87 located directly below the second fixing portion 82 (see FIG. Figure 17 The nut 82 c can be attached to the second rod-shaped portion 82 b of the second fixing portion 82 through the working hole 87 a , and the load cell 71 can be fixed to the load member 77 through the second fixing portion 82 .

[0109] Next, the structure of the main body 10 supporting the excretion amount detector 70 will be described. Figure 14 As shown, as described above, the excretion volume detector 70 is supported from below by the main body bottom wall 15 by being placed on the main body bottom wall 15 of the main body 10. In the present embodiment, a support recess 15a that is recessed downward is formed on the main body bottom wall 15. The excretion volume detector 70 includes a support protrusion 90 embedded in the support recess 15a. The support protrusion 90 constitutes the bottom of the fixing member 76 and protrudes further downward than the upper surface of the fixing member 76. In the present embodiment, the support protrusion 90 has a disc-shaped protrusion body 91 that is smaller than the support recess 15a and a protrusion protrusion 92 provided on the side of the protrusion body 91. The protrusion protrusion 92 protrudes outward from the outer peripheral edge of the protrusion body 91. The shape of the protrusion protrusion 92 is not particularly limited, but as shown in FIG. Figure 12 As shown, the cross-sectional shape is a downward U-shaped shape.

[0110] Here, a convex side inclined surface 93 that is inclined outward as it goes upward is provided on the outer side (front end) of the convex protrusion 92. A curved surface 94 is provided on the lower part of the convex side inclined surface 93. In addition, the number of convex protrusions 92 is not particularly limited, but Figure 11 As shown, there are four of them. The convex protrusions 92 are provided on both the left and right sides and the front and rear sides across the convex body 91 .

[0111] like Figure 14 As shown, the inner circumferential surface of the support recess 15a of the main body 10 is a recess-side inclined surface 15b that tilts outward as it approaches upward. Furthermore, a curved surface 15d is formed between the upper surface 15c of the main body bottom wall 15 and the recess-side inclined surface 15b of the support recess 15a. The radius of curvature of the curved surface 94 of the fixing member 76 is smaller than the radius of curvature of the curved surface 15d of the main body 10. In this embodiment, when the excretion volume detector 70 is positioned on the main body bottom wall 15 of the main body 10, the curved surface 94 of the fixing member 76 contacts the curved surface 15d of the main body 10. The excretion volume detector 70 then moves such that the convex-side inclined surface 93 of the convex protrusion 92 of the fixing member 76 follows the recess-side inclined surface 15b of the support recess 15a of the main body 10, and the supporting protrusion 90 of the fixing member 76 fits into the supporting recess 15a of the main body 10. In this manner, the excretion volume detector 70 can be supported by the main body bottom wall 15 of the main body 10 and the excretion volume detector 70 can be positioned.

[0112] In addition, in this embodiment, if Figure 5 As shown, the support recess 15a of the main body 10 is provided with an engaging recess 15e that is recessed outward in a plan view. The position of the engaging recess 15e is not particularly limited, but is formed on the recess side inclined surface 15b at the rear of the support recess 15a. The convex protrusion 92 of the fixing member 76 (see Figure 11 ) is engaged with the engagement recess 15e. In this way, the engagement of the convex protrusion 92 with the engagement recess 15e prevents the excretion volume detector 70 from rotating relative to the main body bottom wall 15 of the main body 10.

[0113] Next, the structure of the container 30 supported by the excretion amount detector 70 will be described. Figure 6 As shown, as described above, the container 30 is supported by being placed on the excretion amount detector 70. Here, the container 30 is supported by the load member 77 of the excretion amount detector 70. In this embodiment, as shown in FIG. Figure 10 As shown in FIG. 1 , the load member 77 of the excretion amount detector 70 is provided with a convex portion 95 protruding upward. Figure 3 As shown, the convex portion 95 is embedded in the concave portion 38a surrounded by the annular convex portion 38 of the container 30. Therefore, the shape of the outer periphery of the convex portion 95 corresponds to the shape of the inner periphery of the annular convex portion 38 of the container 30. Here, the shape of the outer periphery of the convex portion 95 and the shape of the inner periphery of the concave portion 38a are circular. Figure 10 As shown, the convex portion 95 is annular, but it may not be annular. In this way, by fitting the convex portion 95 of the loading member 77 into the concave portion 38a of the container 30, the container 30 can be easily positioned relative to the loading member 77.

[0114] In this embodiment, the convex portion 95 of the load member 77 is provided with a rotation preventing convex portion 96 protruding outward. Figure 6 As shown, the anti-rotation protrusion 96 fits into the anti-rotation recess 39 formed in the annular protrusion 38 of the container 30. An inclined portion 96a is formed at the circumferential end of the anti-rotation protrusion 96. The inclined portion 96a tilts inward of the anti-rotation protrusion 96 as it moves upward. When the anti-rotation protrusion 96 fits into the anti-rotation recess 39, the inclined portion 96a of the anti-rotation protrusion 96 and the inclined portion 39a of the anti-rotation recess 39 contact each other, making it easier to fit. By fitting the anti-rotation protrusion 96 into the anti-rotation recess 39, the container 30 is prevented from rotating relative to the excretion volume detector 70. Furthermore, since the container 30 is less likely to rotate relative to the excretion volume detector 70, contact between the container body 31 of the container 30 and the excrement receiving portion 40 due to such rotation can be prevented.

[0115] In this embodiment, the cross-sectional shape of the fixing member 76 and the load member 77 is a downward U-shaped shape, and is reinforced. Figure 17 As shown, a first fixing rib 76e and a second fixing rib 76f are formed on the back side of the fixing member 76. The first fixing rib 76e is an annular rib extending along the circumference of the fixing member 76. The first fixing rib 76e is arranged between the center of the fixing member 76 and the peripheral end of the fixing member 76. The second fixing rib 76f extends in the radial direction of the fixing member 76. Here, the second fixing rib 76f includes a fixed outer rib 76g extending radially outward from the first fixing rib 76e and a fixed inner rib 76h extending radially inward from the first fixing rib 76e. In this embodiment, the number of the fixed outer ribs 76g is less than the number of the fixed inner ribs 76h, but the number can be the same as or greater than the number of the fixed inner ribs 76h. In this embodiment, the multiple ribs 76c formed around the fixed-side fixing portion 76b are the first fixing rib 76e and the fixed inner rib 76h.

[0116] Here, the structure of the ribs of the load member 77 is the same as the structure of the ribs of the fixing member 76. Figure 18As shown, a first load rib 77e and a second load rib 77f are formed on the back surface of the load member 77. The first load rib 77e is an annular rib extending in the circumferential direction of the load member 77 and is located between the center of the load member 77 and the peripheral end of the load member 77. The second load rib 77f extends in the radial direction of the load member 77. Here, the second load rib 77f includes load outer ribs 77g extending radially outward from the first load rib 77e and load inner ribs 77h extending radially inward from the first load rib 77e. In this embodiment, the number of load outer ribs 77g is less than the number of load inner ribs 77h, but the number of load inner ribs 77h can be the same as or greater than the number of load inner ribs 77h.

[0117] In this embodiment, if Figure 15 As shown, the portable toilet 100 is provided with a control device 110. Figure 15 , the excretion volume detector 70 is shown with the load member 77 removed. The control device 110 is a device that performs controls related to the management of the use of the portable toilet 100. Here, the control device 110 controls the amount of excrement discharged into the container 30. The structure of the control device 110 is not particularly limited. The control device 110 is, for example, a microcomputer. The control device 110 includes, for example, an interface, a CPU, ROM, RAM, and a storage device. Furthermore, the control device 110 includes a wired or wireless output device and a display device that are connected to an external storage device so as to be communicative.

[0118] In this embodiment, the control device 110 is communicatively connected to the excretion volume detector 70. For example, the control device 110 supplies a constant current to the strain gauge 75 of the excretion volume detector 70 while measuring the current value, thereby obtaining the resistance value of the strain gauge 75. Here, the resistance value of the portable toilet 100 user before defecation is used as the initial value. The control device 110 obtains the resistance value of the strain gauge 75 after the user has excreted excrement as the post-excretion resistance value. The control device 110 then converts the change in resistance value (here, the difference between the initial value and the post-excretion resistance value) into a change in mass to obtain the excretion volume. This conversion from resistance value to excretion volume (mass) can be performed by a computing device (program) included in the control device 110 or by a computing device (program) included in an external storage device. In other words, the conversion to excretion volume can be performed by the control device 110 or by an external storage device. In this embodiment, the control device 110 can record or obtain the time and volume of excrement excretion for each user. Furthermore, the control device 110 can obtain the time series mass change in the user's excretion behavior. In addition, a notification function can also be provided in the external storage device to notify the user of the obtained excretion volume, excretion time, etc.

[0119] In this embodiment, the control device 110 and the excretion volume detector 70 are connected via a cable 111. Specifically, the cable 111 connects the control device 110 to the strain gauge 75 of the load cell 71. The cable 111 is detachably connected to the control device 110. In this embodiment, a cable binding portion 115 is formed on the fixing member 76 for binding the cable 111 and fixing it to the fixing member 76. The cable binding portion 115 is, for example, groove-shaped. The shape of the cable binding portion 115 is not particularly limited, but in this case, it is a linear groove. By fitting the cable 111 into the cable binding portion 115 in this manner, the position of the cable 111 relative to the fixing member 76 can be fixed. Furthermore, the cable binding portion 115 can prevent the strain gauge 75 and the cable 111 from being disconnected.

[0120] Figure 16 1 is a perspective view showing the main body 10 and the control device 110. Figure 16 , the state where the control device 110 is removed from the main body 10 is shown. In this embodiment, the control device 110 is mounted on the main body 10 in a detachable manner. The control device 110 is preferably arranged at a position that does not hinder the user from using the portable toilet 100. Here, the control device 110 is mounted at the rear of the main body 10, below the backrest 65 and behind the container 30 and the toilet seat 50. In detail, as Figure 5 As shown, a mounting portion 120, for example, which is open upward, is provided at the center portion of the rear portion of the main body 10. Figure 16 As shown in FIG. 1 , a hook 122 is provided on the control device 110. The hook 122 is configured to be hooked on the mounting portion 120. Figure 16 As shown by arrow A2, the control device 110 can be attached to the mounting portion 120 by hooking the hook 122 onto the mounting portion 120. On the other hand, the control device 110 can be removed from the mounting portion 120 by removing the hook 122 from the mounting portion 120. While the control device 110 is attached to the rear portion of the main body 10, it can be attached to any location on the portable toilet 100 as long as it does not interfere with the user's use of the portable toilet 100. In this embodiment, the control device 110 is separate from the excretion volume detector 70, but it can also be a part of the excretion volume detector 70. That is, the control device 110 can also be provided on the excretion volume detector 70.

[0121] Next, the use example of the portable toilet 100 of this embodiment is described. When the user uses the portable toilet 100, as shown in FIG. Figure 3As shown, an excretion volume detector 70 is placed on the main body bottom wall 15 of the main body 10, and a container 30 is placed on the load component 77 of the excretion volume detector 70. In addition, an excretion receiving portion 40 is arranged on the upper portion of the main body 10. At this time, the container body 31 of the container 30 is arranged to be separated from the excretion receiving portion 40. A toilet seat 50 is arranged above the container 30. The user sits on the toilet seat 50 and discharges excrement into the container 30. At this time, the container 30 is in a state of being filled with water. When excrement is discharged into the container 30, the load applied from the container 30 to the excretion volume detector 70 changes according to the excretion volume. Due to the load change, the strain amount of the strain body 73 of the excretion volume detector 70 changes, as shown in FIG. Figure 15 As shown, the change in resistance value of strain gauge 75, corresponding to the amount of strain, is acquired by control device 110 via cable 111 and then transmitted from control device 110 to an external storage device. The external storage device converts the amount of excretion into mass based on the received change in resistance value and stores the time of receipt. The external storage device associates the time of excretion with the amount of excretion for each user, thereby managing the amount of excretion.

[0122] In the present embodiment, as described above, Figure 6 As shown, the portable toilet 100 includes a container 30 for excrement discharge and a strain gauge 75 (see FIG. 7 ) for detecting the amount of excrement discharged into the container 30. Figure 13 There is at least one strain gauge 75. Using the strain gauge 75 allows for highly accurate detection of excretion volume. Furthermore, the strain gauge 75 offers excellent detection accuracy, is less susceptible to temperature influences, has a fast response time, is compact, and has a long lifespan, making it an excellent choice for portable toilet 100.

[0123] In this embodiment, the portable toilet 100 includes a discharge volume detector 70 having a load cell 71 (see Figure 12 and Figure 14 ).like Figure 13 As shown, the load cell 71 includes a strain body 73 that strains in response to the load applied to the excretion volume detector 70 when excrement is discharged into the container 30, and a strain gauge 75 provided on the strain body 73. Since the strain body 73 easily strains with high accuracy in response to the load applied from the container 30, the strain gauge 75 provided on the strain body 73 easily detects the strain of the strain body 73. Therefore, by using the load cell 71 including the strain body 73, the excretion volume can be detected with higher accuracy based on the strain of the strain body 73.

[0124] In this embodiment, if Figure 6As shown, the excretion volume detector 70 supports the container 30 from below. The excretion volume detector 70 includes a fixed member 76 and a load member 77 disposed above the fixed member 76 and on which the container 30 is placed. A load cell 71 is sandwiched between the fixed member 76 and the load member 77. This allows the strain body 73 of the load cell 71 to be strained in response to the load applied from the container 30 to the load member 77 when excrement is discharged into the container 30. Therefore, the excretion volume can be detected by the load applied from the container 30 to the load member 77.

[0125] In this embodiment, if Figure 13 As shown, the strain body 73 has a beam-like shape extending forward and backward. By making the strain body 73 into a beam shape, strain can be easily generated. Therefore, the amount of excretion can be detected with high accuracy. Furthermore, by making the strain body 73 into a beam shape, the direction in which the strain body 73 extends can be set as the direction in which the strain body 73 is most likely to be strained, i.e., the strain direction.

[0126] In this embodiment, if Figure 14 As shown, the excretion volume detector 70 includes a first fixing portion 81 that fixes the load cell 71 and the fixing member 76, and a second fixing portion 82 that fixes the load cell 71 and the load member 77. When the strain body 73 is not strained, the fixing member 76 and the load member 77 are separated. The strain body 73 is configured so that when a load exceeding a predetermined maximum load (here, the assumed maximum load) is applied to the excretion volume detector 70, the strain body 73 is strained (e.g., Figure 14 (The fixed member 76 and the load member 77 are in contact with each other at any contact point P1.) When a load exceeding the assumed maximum load is applied to the load member 77, the load member 77 contacts the fixed member 76 at the contact point P1. This prevents the load member 77 from moving below the fixed member 76, thereby suppressing the maximum strain of the strain body 73. This reduces the strain body 73 from permanent deformation, preventing damage to the strain body 73. Permanent deformation, as used herein, refers to deformation that does not recover after deformation.

[0127] In this embodiment, if Figure 14 As shown, the vertical distance between the fixing member 76 and the load member 77 when the strain body 73 is not strained is set as the separation distance H1. The maximum distance between the first fixing portion 81 and the contact point P1 is set as the maximum distance L1. In this case, the separation distance H1 / maximum distance L1 is 0.01 to 0.1. By setting the separation distance H1 / maximum distance L1 within the above range, the maximum distance L1 between the first fixing portion 81 and the contact point P1 can be prevented from being too long, and the excretion volume detector 70 can be made compact. In addition, the strain body 73 can be prevented from being excessively strained, making it less likely to be permanently deformed, and thus preventing damage to the strain body 73.

[0128] In this embodiment, if Figure 14 As shown, the straining body 73 includes a first contact portion 83a, which is provided on its lower surface and contacts the fixed member 76 when secured to the fixed member 76 by the first fixing portion 81. A fixed-side space 86a is formed between the portion of the lower surface of the straining body 73 excluding the first contact portion 83a and the fixed member 76. Consequently, when the straining body 73 is strained downward toward the fixed member 76, the strained portion of the straining body 73 can be released into the fixed-side space 86a. Consequently, the portion of the lower surface of the straining body 73 excluding the first contact portion 83a is less likely to contact the fixed member 76, enabling highly accurate detection of excretion volume.

[0129] In this embodiment, if Figure 14 As shown, the strain body 73 includes a second contact portion 84a provided on the upper surface of the strain body 73. The second contact portion 84a contacts the load member 77 when the strain body 73 is fixed to the load member 77 by the second fixing portion 82. A load-side space 85a is formed between the portion of the upper surface of the strain body 73 excluding the second contact portion 84a and the load member 77. Thus, when the strain body 73 is strained upward toward the load member 77, the strained portion of the strain body 73 can be released into the load-side space 85a. Consequently, the strain gauge 75 provided on the upper surface of the strain body 73 excluding the second contact portion 84a is less likely to contact the load member 77, thereby preventing damage to the strain gauge 75.

[0130] In this embodiment, if Figure 14 As shown, the portable toilet 100 includes a main body 10 having a main body bottom wall 15 that supports the excretion volume detector 70 from below. The main body bottom wall 15 includes a supporting recess 15a. The bottom of the fixing member 76 includes a supporting protrusion 90 that fits into the supporting recess 15a. By fitting the supporting protrusion 90 into the supporting recess 15a, the position of the fixing member 76 relative to the main body bottom wall 15 can be determined. Therefore, the excretion volume detector 70 can be easily positioned relative to the main body bottom wall 15, enabling highly accurate excretion volume detection.

[0131] In this embodiment, if Figure 14 As shown, the support recess 15a has a recess-side inclined surface 15b provided on its inner circumference. The support protrusion 90 has a protrusion-side inclined surface 93 provided on its outer circumference and in contact with the recess-side inclined surface 15b. Thus, by bringing the recess-side inclined surface 15b into contact with the protrusion-side inclined surface 93, the support protrusion 90 can be easily guided toward its insertion into the support recess 15a. This facilitates positioning of the excretion volume detector 70 relative to the main body bottom wall 15, enabling highly accurate excretion volume detection.

[0132] In this embodiment, if Figure 3 As shown, the portable toilet 100 includes: a waste receiving portion 40, which is arranged to surround at least a portion of a container 30 when viewed from above; and a toilet seat 50, which is arranged above the container 30 and the waste receiving portion 40. A waste volume detector 70 supports the container 30 from below. The container 30 includes a container body 31 that is open upward. The container body 31 is separate from the waste receiving portion 40 and the toilet seat 50. This reduces the load from the toilet seat 50 to the container 30, and also reduces the load from the waste receiving portion 40 to the container 30. Therefore, the waste volume detector 70 is not subjected to loads from the toilet seat 50 and the waste receiving portion 40, but is subjected to loads from the container 30 during waste discharge. Therefore, when the user sits on the toilet seat 50, the excretion volume detector 70 is less likely to bear an impact load, and the load is less likely to be transmitted from the excrement receiving portion 40 to the container 30. Therefore, a load corresponding to the amount of excrement discharged into the container 30 is applied to the excretion volume detector 70, thereby enabling the excretion volume to be detected with high accuracy.

[0133] Furthermore, in this embodiment, the support recess 15a is provided on the main body bottom wall 15 of the main body 10, and the support protrusion 90 is provided on the bottom of the fixing member 76. However, an upwardly protruding support protrusion may be provided on the main body bottom wall 15. In this case, an upwardly recessed support recess may be provided on the bottom of the fixing member 76.

[0134] In this embodiment, if Figure 13 As shown, the strain gauge 75 is provided on the beam-shaped strain body 73. Figure 3 As shown, the container 30 and the excrement receiving portion 40 are arranged separately. However, for example, if the container 30 is suspended from the excrement receiving portion 40, the strain gauge 75 can be provided on the side wall (side wall portion 36) or bottom wall (bottom wall portion 35) of the container 30, or on the excrement receiving portion 40. In this case, the strain gauge 75 can also detect the strain of the container 30 or the excrement receiving portion 40 caused by the load of excrement. In this case, the container 30 or the excrement receiving portion 40 can also be formed of a relatively flexible material.

[0135] In this embodiment, a single load cell 71 equipped with a strain gauge 75 is provided in the excretion volume detector 70. However, the number of load cells 71 equipped with a strain gauge 75 is not limited to one and may be two or more. In other words, the portable toilet 100 may also be equipped with two or more strain gauges 75. For example, if three load cells 71 are provided in the excretion volume detector 70, the three load cells 71 may be arranged evenly spaced around the circumference of the excretion volume detector 70 (e.g., the fixing member 76 or the load member 77) and extending radially (in other words, extending toward the center of the excretion volume detector 70). In this case, the strain bodies 73 of the load cells 71 may also be smaller. Furthermore, while the load cell 71 is fixed to the fixing member 76 in this case, it may not be fixed to the load member 77. For example, the load member 77 may be placed on the load cell 71. Furthermore, to facilitate vertical movement of the load member 77, a guide mechanism may be provided to guide vertical movement.

[0136] Description of Reference Numerals

[0137] 10 Main body

[0138] 15 Main body bottom wall

[0139] 15a Support recess

[0140] 15d Concave side inclined surface

[0141] 30 containers

[0142] 40 Excrement receiving part

[0143] 50 toilet seat

[0144] 70 Excretion volume detector

[0145] 71 force sensor

[0146] 73 strain body

[0147] 75 strain gauge

[0148] 76 fixed parts

[0149] 77 Load components

[0150] 81 First fixed part

[0151] 82 Second fixed part

[0152] 83a First contact portion

[0153] 84a Second contact portion

[0154] 85a Load side space

[0155] 86a Fixed side space

[0156] 90 Support projection

[0157] 93 convex side inclined surface

[0158] 100 portable toilet

[0159] H1 separation distance

[0160] L1 maximum distance

[0161] P1 contact point

Claims

1. A portable toilet, characterized in that: have: a container for excreta to be discharged; and a strain gauge that detects the amount of excrement discharged into the container, There is at least one strain gauge.

2. The portable toilet according to claim 1, wherein Equipped with an excretion volume detector having a load cell, The force sensor comprises: a strain body that is strained according to a load applied to the excretion amount detector when excrement is discharged into the container; and The strain gauge is arranged on the strain body.

3. The portable toilet according to claim 2, wherein: The excretion volume detector supports the container from below, The excretion volume detector comprises: a fixed component, which is fixed in position; and A loading member is arranged above the fixing member and is provided to carry the container. The load cell is sandwiched between the fixing member and the load member.

4. The portable toilet according to claim 2 or 3, characterized in that: The strain body has a beam shape extending forward and backward.

5. The portable toilet according to claim 3 or 4, characterized in that: The excretion volume detector comprises: a first fixing portion that fixes the load cell and the fixing member; and a second fixing portion, which fixes the load cell and the load component; When the strain body is not strained, the fixing component is separated from the load component. The structure is such that when a load equal to or greater than a predetermined maximum load is applied to the excretion volume detector, the strain body is deformed, and the fixing member and the load member come into contact with each other at an arbitrary contact point.

6. The portable toilet according to claim 5, wherein: When the vertical distance between the fixing member and the load member in a state where the strain body is not strained is defined as a separation distance and the maximum distance between the first fixing portion and the contact point is defined as a maximum distance, The separation distance / the maximum distance is 0.01 to 0.

1.

7. The portable toilet according to claim 5 or 6, characterized in that: The strain body has a first contact portion, which is provided on the lower surface of the strain body and contacts the fixing member when the strain body is fixed to the fixing member by the first fixing portion. A fixed-side space is formed between a portion of the lower surface of the strainer excluding the first contact portion and the fixing member.

8. The portable toilet according to any one of claims 5 to 7, characterized in that: The strain body has a second contact portion provided on an upper surface of the strain body and in contact with the load component when the strain body is fixed to the load component by the second fixing portion. A load-side space is formed between a portion of the upper surface of the strainer excluding the second contact portion and the load member.

9. The portable toilet according to any one of claims 3 to 8, characterized in that: The main body has a main body bottom wall supporting the excretion volume detector from below. One of the bottom wall of the main body and the bottom of the fixing member has a supporting recess. The other of the main body bottom wall and the bottom portion of the fixing member includes a supporting protrusion that fits into the supporting recess.

10. The portable toilet according to claim 9, characterized in that The support recess has a recess-side inclined surface provided on the inner peripheral surface. The supporting protrusion has a protrusion-side inclined surface provided on the outer peripheral surface and in contact with the recessed-side inclined surface.

11. The portable toilet according to claim 2, wherein: have: a waste receiving portion configured to surround at least a portion of the container when viewed from above; and A toilet seat is arranged above the container and the excrement receiving portion, The excretion volume detector supports the container from below, The container has a container body portion that is open upward. The container body is separated from the excrement receiving portion and the toilet seat.

Images