JP7518920B2 - Portable toilet buckets and portable toilets - Google Patents

Description

The present invention relates to a portable toilet bucket that is removably attached to the toilet body of a portable toilet, and a portable toilet equipped with the same.

Portable toilets are equipped with a removable bucket that is placed under the toilet seat. After using the portable toilet, the user or caregiver (hereinafter collectively referred to as the user) removes the bucket from the bucket body and carries the bucket to a wastewater discharge location, such as a toilet. The user then discharges the wastewater that has accumulated in the bucket into the toilet bowl or the like.

The bucket has a container and a handle that spans the top of the container. A user can remove the bucket by lifting the handle. Also, a user can carry the bucket by holding onto the handle while moving. When removing or carrying the bucket, the handle is held in an upright position, but when the portable toilet is in use, the handle is tilted down so as not to get in the way. For this reason, the handle is assembled so that it can rotate relative to the container.

However, if the handle is rotatable, when a user grasps the handle to carry the bucket, the container may shake, causing wastewater to splash out. Also, if the container hits furniture or other objects while being carried, it may tilt and cause wastewater to spill out.

Therefore, the inventors of the present application came up with the idea of providing a mechanism (hereinafter referred to as a locking mechanism) for portable toilet buckets that fixes the handle so that it does not rotate relative to the container when it is lifted. For example, Patent Document 1 discloses a bucket equipped with such a locking mechanism, although it is not for a portable toilet.

The locking mechanism disclosed in Patent Document 1 is composed of an axial hole 501 formed in the container 500 and an axial hole 511 provided on the handle 510, as shown in FIG. 32(a). The axial hole 501 is formed in an eggplant shape and consists of a circular hole 502 and a vertical hole 503 above the circular hole 502. The axial hole 511 of the handle 510 is formed in a square cross section. As shown in FIG. 32(a), when the handle 510 is in the tilted position, the axial hole 511 is located inside the circular hole 502, so the handle 510 can rotate. On the other hand, as shown in FIG. 32(b), when the handle 510 is lifted upright, the axial hole 511 moves from the circular hole 502 to the vertical hole 503, so that it cannot rotate. As a result, the handle 510 is fixed to the container 500 so that it cannot rotate.

Japanese Utility Model Publication No. 54-148540

When a user discharges wastewater from a bucket into a toilet bowl, first, as shown in FIG. 33(a), he or she holds the handle 510 and positions the container 500 above the toilet bowl 520. At this time, as shown in FIG. 33(b), the axis 511 of the handle 510 fits into the vertical hole 503, restricting the rotation of the handle 510. Next, as shown in FIG. 34(a), the user tilts the container 500 while holding the handle 510. In a bucket equipped with a locking mechanism, the handle 510 is fixed to the container 500 so that it cannot rotate, so the user tilts the handle 510 together with the container 500. At this time, a force is applied to the axis 511 of the handle 510 so that it tilts from the vertical hole 503 (see FIG. 34(b)). The axis 511 gradually tilts and slides from the vertical hole 503 toward the circular hole 502. If the degree of tilt increases, the shaft 511 will come out of the vertical hole 503 (see FIG. 35(b)). If the shaft 511 comes out of the vertical hole 503, the handle 510 will be released and the container 500 will suddenly tilt (see FIG. 35(a)). As a result, the wastewater will be forcefully discharged toward the toilet bowl 520, causing the wastewater to splash out of the toilet bowl 520.

The object of the present invention is to provide a bucket for a portable toilet, in which the vertical dimension of the axial hole of the container is kept small, the handle can be fixed so as not to rotate relative to the container, and the handle does not become released when wastewater is drained by tilting the container while grasping the handle, and a portable toilet equipped with the bucket.

The portable toilet bucket of the present invention comprises a container having an upper edge portion that opens upward and a left side portion and a right side portion, and a handle that spans from the left side portion to the right side portion of the container and is rotatably engaged with the container. At least one of the left side portion and the right side portion of the container has an axial hole that includes a circular hole and a vertical hole that extends linearly upward from the circular hole. The handle has a shaft inserted into the axial hole. The shaft is rotatable within the circular hole, and is configured so that when the handle is lifted upright, it moves from the circular hole to the vertical hole and fits into the vertical hole. The vertical hole has a front edge that extends linearly upward from the front end of the circular hole, and a rear edge that is formed behind the front edge and extends linearly upward. The shaft has a linear first shaft edge that faces the front edge and a linear second shaft edge that faces the rear edge when the shaft fits into the vertical hole. The vertical length of the front edge is longer than the length of the first shaft edge.

According to the portable toilet bucket, the handle shaft can rotate inside the circular hole of the container, so the handle can rotate relative to the container. When the bucket is attached to the toilet body of the portable toilet, the handle can be tilted down, so the handle does not get in the way when the portable toilet is used. On the other hand, when the handle is lifted upright, the handle shaft moves from the circular hole of the container to the vertical hole and fits into the vertical hole. This fixes the handle so that it does not rotate relative to the container. This makes it easy to carry the bucket without spilling sewage. When draining sewage from the bucket, the container is tilted forward while holding the handle. At this time, a force acts on the shaft to tilt it from the vertical hole. However, in the bucket, the vertical length of the front edge of the vertical hole is longer than the length of the first axis edge of the shaft. Therefore, even if the above force acts on the shaft, the lower end of the first axis edge remains supported by the front edge of the vertical hole, and the shaft does not come out of the vertical hole. Therefore, the handle is not released from its fixed position, and the container is prevented from being tilted suddenly. Therefore, the wastewater is prevented from being forcefully discharged from the container. In addition, according to the portable toilet bucket, the front edge of the vertical hole extends upward from the front end of the circular hole. Therefore, the vertical dimension of the axial hole can be reduced while ensuring the vertical length of the front edge.

The vertical length of the rear edge may be shorter than the length of the first axis edge.

This allows the vertical dimensions of the shaft hole to be further reduced.

The vertical length of the leading edge of the vertical hole may be longer than the hole width between the leading edge and the trailing edge of the vertical hole.

Increasing the vertical length of the front edge of the vertical hole in this way makes it even more difficult for the shaft to come out of the vertical hole. This makes it possible to more reliably prevent the handle from becoming loose when the container is tilted.

The cross-sectional shape of the shaft may be formed in a quadrangular shape having the first shaft edge, the second shaft edge, a third shaft edge connecting one end of the first shaft edge and one end of the second shaft edge, and a fourth shaft edge connecting the other end of the first shaft edge and the other end of the second shaft edge. The length of the first shaft edge and the second shaft edge may be longer than the length of the third shaft edge and the fourth shaft edge.

Because of this, the length of the first axis edge is relatively long, and the contact area between the first axis and the front edge is relatively large. The axis of the handle is adequately supported by the front edge of the vertical hole. This makes it possible to more reliably prevent the axis from coming out of the vertical hole. It makes it possible to more reliably prevent the handle from being released from its fixed position.

The handle may have a stopper provided on the tip side of the shaft. The stopper may have a stopper body part at least a part of which is located inside the circular hole when viewed from the axial direction of the shaft when the handle is tilted down, and a protrusion protruding upward from the stopper body part. The protrusion may be formed so as to be located inside the vertical hole when viewed from the axial direction of the shaft when the handle is tilted down, and to overlap the periphery of the vertical hole of the container when viewed from the axial direction of the shaft when the handle is upright and lifted.

As a result, the handle is equipped with a stopper provided on the tip side of the shaft, but when the handle is tilted down, the protrusion of the stopper is located inside the vertical hole when viewed from the axial direction of the shaft. This makes it easy to pass the stopper through the shaft hole, and the handle can be easily attached to the container. When the handle is upright and raised, the protrusion of the stopper overlaps with the peripheral portion of the vertical hole of the container when viewed from the axial direction of the shaft. Therefore, even if the handle shifts in the axial direction of the shaft, the protrusion of the stopper abuts the peripheral portion of the vertical hole, so the shaft will not come out of the vertical hole and the handle is prevented from coming off the container. It is therefore possible to provide a portable toilet bucket whose handle is less likely to come off the container.

The stopper body may be formed in a circular shape having an outer diameter larger than the width of the vertical hole when viewed in the axial direction of the shaft. The cross-sectional shape of the shaft may be formed in a square shape.

The shaft hole may be formed in the left and right portions of the container. The shaft and the stopper may be provided on either side of the handle.

The protrusion may be formed so as to be located inside the vertical hole as viewed from the axial direction of the shaft when the handle is tilted backwards, and to be located in front of the vertical hole as viewed from the axial direction of the shaft when the handle is lifted upright.

As a result, when the handle is tilted backwards, the protrusion of the stopper is located inside the vertical hole, so the stopper can be passed through the axial hole. By tilting the handle backwards, the handle can be attached to the container. When the handle is raised upright, the protrusion of the stopper is located in front of the vertical hole, so the protrusion can engage with the front part of the vertical hole of the container. This prevents the handle from coming off the container.

The container may have an inverted U-shaped reinforcing rib protruding from the periphery of the vertical hole in one direction along the axis of the shaft. The handle may have a reinforcing portion that is provided on one side of the axis of the shaft relative to the first and second shaft edges and is inserted inside the reinforcing rib when the handle is lifted upright.

As a result, when the container is tilted, the force applied to the container from the shaft is supported not only by the front edge of the vertical hole, but also by the reinforcing rib. Because the area around the vertical hole is less likely to deform, the shaft is further prevented from coming out of the vertical hole. This makes it even more effective to prevent the handle from becoming loose when the container is tilted.

The container may have transverse ribs extending forward or rearward from the reinforcing ribs.

This makes it even more difficult for the area around the vertical hole to deform, and more reliably prevents the shaft from coming out of the vertical hole. It also makes it even more effective to prevent the handle from becoming loose when the container is tilted.

The front-to-back length of the container may be longer than the left-to-right length of the container.

The length in the front-to-rear direction between the front end of the container and the axial hole may be longer than the length in the front-to-rear direction between the rear end of the container and the axial hole.

The bottom wall of the container may be inclined upwards towards the front.

Before use, a portable toilet requires water to be filled in the bucket to a specified level. This makes it easier to maintain the water level in the container even with a relatively small amount of water, thus saving water.

The upper edge of the container may have an outer peripheral wall extending vertically and a liquid drain plate protruding forward from the front of the outer peripheral wall.

As a result, when the container is tilted to drain wastewater, the wastewater flows down from the tip of the drain plate. This prevents the wastewater from running down the outer peripheral wall, preventing the outer peripheral wall from becoming dirty. This prevents the outer peripheral wall of the container from becoming dirty when wastewater is discharged.

The container may have a downwardly recessed spout formed at the front end of the upper edge.

This allows the wastewater to be concentrated and discharged from the spout when the container is tilted. This prevents the wastewater from splashing to the left and right. The wastewater can be discharged smoothly into the toilet bowl, etc.

The portable toilet of the present invention is equipped with the portable toilet bucket described above.

According to the present invention, it is possible to provide a portable toilet bucket and a portable toilet equipped with the same, in which the handle can be fixed so that it does not rotate relative to the container while keeping the vertical dimension of the axial hole of the container small, and the handle does not become unfixed when draining wastewater by tilting the container while grasping the handle.

FIG. 1 is a perspective view of a portable toilet according to an embodiment. FIG. 2 is a perspective view of a portable toilet bucket according to an embodiment. FIG. 3 is a plan view of the container. FIG. 4 is a left side view of the container. FIG. 5 is a rear view of the container. FIG. 6 is a bottom view of the container. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 9 is a view corresponding to FIG. 7 of a container according to a modified example. FIG. 10 is a view corresponding to FIG. 7, showing a container according to another modified example. FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. FIG. 12 is an enlarged left side view showing the vicinity of the axial hole of the container. FIG. 13 is an enlarged perspective view showing the vicinity of the axial hole of the container. FIG. 14 is an enlarged view of a portion XIV in FIG. FIG. 15 is an enlarged view of a portion XV in FIG. FIG. 16 is a perspective view of the handle. FIG. 17 is an enlarged view of a portion XVII in FIG. FIG. 18 is a view equivalent to FIG. 17, showing a cross section of the shaft of the handle. FIG. 19 is a left side view of the portable toilet bucket with the handle tilted forward. FIG. 20 is a left side view of the portable toilet bucket when lifted with the handle upright. FIG. 21 is a left side view of the portable toilet bucket with the handle tilted backward. FIG. 22 is a diagram showing the engagement state of the shaft and shaft hole when the handle is raised upright. FIG. 23 is a diagram showing the position of the stopper when the handle is tilted backward. FIG. 24 is a diagram showing the position of the stopper when the handle is rotated upward. FIG. 25 is a diagram showing the position of the stopper when the handle is raised upright. Figures 26(a) to 26(c) are schematic diagrams showing a portable toilet bucket and the water in the container, with Figure 26(a) showing the container not tilted, Figure 26(b) showing the container tilted downward toward the rear, and Figure 26(c) showing the container tilted downward toward the front. FIG. 27(a) is a side view that typically shows the portable toilet bucket and toilet bowl before the container is tilted, and FIG. 27(b) is a diagram showing the engagement state of the shaft and shaft hole at that time. FIG. 28(a) is a side view that typically shows a portable toilet bucket and a toilet bowl when the container is tilted, and FIG. 28(b) is a diagram showing the engagement state of the shaft and shaft hole at that time. FIG. 29(a) is a side view that shows a schematic representation of the portable toilet bucket and toilet bowl when the container is further tilted, and FIG. 29(b) is a diagram showing the engagement state of the shaft and shaft hole at that time. FIG. 30 is a diagram showing the position of the stopper when the handle is tilted forward for a portable toilet bucket according to another embodiment. FIG. 31 is a perspective view of a portable toilet bucket according to another embodiment. Figures 32(a) and 32(b) are explanatory diagrams of a conventional locking mechanism that fixes the handle so that it does not rotate relative to the container when the handle is lifted, with Figure 32(a) showing the handle in its laid-down position and Figure 32(b) showing the handle in its upright position. Figures 33(a) and 33(b) are explanatory diagrams of a portable toilet bucket equipped with a conventional locking mechanism, where Figure 33(a) is a schematic side view of the portable toilet bucket and toilet bowl before the container is tilted, and Figure 33(b) is a diagram showing the engaged state of the shaft and shaft hole at that time. Figures 34(a) and 34(b) are explanatory diagrams of a portable toilet bucket equipped with a conventional locking mechanism, where Figure 34(a) is a schematic side view of the portable toilet bucket and toilet bowl when the container is tilted, and Figure 34(b) is a diagram showing the engagement state of the shaft and shaft hole at that time. Figures 35(a) and 35(b) are explanatory diagrams of a portable toilet bucket equipped with a conventional locking mechanism, where Figure 35(a) is a schematic side view of the portable toilet bucket and toilet bowl when the container is suddenly tilted, and Figure 35(b) is a diagram showing the engagement state of the shaft and shaft hole at that time.

Below, a portable toilet and a bucket for a portable toilet according to one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a portable toilet 1 according to this embodiment. In the following description of the portable toilet 1, the terms front, rear, left, right, top, and bottom refer to the front, rear, left, right, top, and bottom directions, respectively, as seen by a user sitting on a toilet seat 5, which will be described later.

<Portable toilets>
The portable toilet 1 comprises a toilet body 2 and a portable toilet bucket (hereinafter simply referred to as a bucket) 10 that is detachably attached to the toilet body 2.

<Toilet body>
First, the toilet body 2 will be described. The toilet body 2 includes a chair portion 3, legs 4 supporting the chair portion 3, a toilet seat 5, a backrest 6, left and right armrests 7, and a lid 8. The chair portion 3 is formed in a box shape that opens upward. The bucket 10 is attached to the inside of the chair portion 3. The toilet seat 5 is rotatably attached to the rear portion of the chair portion 3. When the toilet seat 5 is rotated forward, it can be laid horizontally, and a user can sit on the toilet seat 5. When the toilet seat 5 is rotated upward, it can be raised, and the inside of the chair portion 3 can be opened. By raising the toilet seat 5, the bucket 10 can be removed upward from the chair portion 3, and the bucket 10 can be attached from above toward the chair portion 3.

Note that the toilet body 2 shown in FIG. 1 is only one example. The configuration of the toilet body 2 is not particularly limited as long as the bucket 10 can be removably attached. The armrests 7, backrest 6, or lid 8 are not necessarily required. If the seat portion 3 is formed to be placed directly on the floor, the legs 4 may be omitted.

<Bucket>
Next, the bucket 10 will be described. In the following description of the bucket 10, the terms "front,""back,""left," and "right" refer to the front, back, left, and right directions, respectively, as seen by a user sitting on the toilet seat 5 when the bucket 10 is attached to the toilet body 2. The terms "upper" and "lower" refer to the upper and lower directions, respectively, when the bucket 10 is placed on a horizontal surface. The symbols F, Re, L, R, U, and D in the drawings represent the front, rear, left, right, upper, and lower, respectively.

Unless otherwise specified, "forward" includes not only the horizontal forward direction, but also directions tilted at an angle of less than 90 degrees to the left or right from that direction. "Backward" includes not only the horizontal backward direction, but also directions tilted at an angle of less than 90 degrees to the left or right from that direction. "Left" includes not only the horizontal leftward direction, but also directions tilted at an angle of less than 90 degrees forward or backward from that direction. "Right" includes not only the horizontal rightward direction, but also directions tilted at an angle of less than 90 degrees forward or backward from that direction. "Up" includes not only the vertical upward direction, but also directions tilted at an angle of less than 90 degrees forward or backward from that direction. "Down" includes not only the vertical downward direction, but also directions tilted at an angle of less than 90 degrees forward or backward from that direction.

Figure 2 is an oblique view of the bucket 10 according to this embodiment. The bucket 10 has a container 20 and a handle 50. The container 20 has an upper edge 22 that opens upward. The handle 50 spans from the left side to the right side of the container 20. The handle 50 spans the container 20 so as to straddle the upper edge 22. As will be described in more detail below, the handle 50 is engaged with the container 20 so as to be rotatable around the axis C1.

<Container>
Figures 3, 4, 5, and 6 are a plan view, a left side view, a rear view, and a bottom view, respectively, of the container 20. Figure 7 is a vertical cross-sectional view of the container 20, and is a cross-sectional view taken along line VII-VII in Figure 5. Figure 8 is a horizontal cross-sectional view of the container 20, and is a cross-sectional view taken along line VIII-VIII in Figure 4. As shown in Figure 7, the container 20 includes a bottom wall 24, a peripheral wall 26 extending upward from the bottom wall 24, an upper edge portion 22 located above the peripheral wall 26, and an annular leg 28 provided on the underside of the bottom wall 24.

As shown in Fig. 3, the bottom wall 24 is formed in a circular shape when viewed from above. As shown in Fig. 7, the bottom wall 24 is formed in a concave shape that is recessed downward. In this embodiment, the bottom wall 24 has a horizontal wall 24A that extends horizontally and is circular when viewed from above, and an inclined wall 24B that is inclined diagonally upward from the outer circumferential end of the horizontal wall 24A.

However, the shape of the bottom wall 24 is not particularly limited. As shown in FIG. 9, the bottom wall 24 may be curved in a concave shape. The bottom wall 24 may be formed so as not to have a bent portion. In this case, the bottom wall 24 is also formed in a circular shape when viewed from above. The bottom wall 24 may be formed in a hemispherical shape.

As shown in Figure 10, the bottom wall 24 may be inclined upward as it approaches the front. In this case, the bottom wall 24 may also be formed in a circular shape when viewed from above.

As shown in FIG. 8, the peripheral wall 26 has a rear peripheral wall 26A having an arc-shaped horizontal cross section, and a front peripheral wall 26B extending forward from the rear peripheral wall 26A and having a forwardly convex horizontal cross section. When viewed from the side as shown in FIG. 4, the contour of the front peripheral wall 26B has a curved portion 26BL whose inclination angle α with respect to the horizontal line decreases the further upward. The proportion of the curved portion 26BL that accounts for the entire contour of the front peripheral wall 26B is not particularly limited, but is preferably 50% or more, and more preferably 65% or more. In this embodiment, it is 80% or more. The entire contour of the front peripheral wall 26B may be the curved portion 26BL.

As shown in FIG. 7, an upper vertical wall 26BU is provided above the portion 26BL, which is curved so that the inclination angle α with respect to the horizontal line decreases the further upward. The upper vertical wall 26BU is a substantially vertical wall. The upper vertical wall 26BU may extend vertically or may be slightly inclined from the vertical plane. For example, the upper vertical wall 26BU may be inclined at an angle of ±10 degrees or less, preferably ±5 degrees or less, from the vertical plane. The upper vertical wall 26BU plays a role in preventing urine from splashing forward of the container 20 due to the force of urination when the portable toilet 1 is in use. From the viewpoint of preventing urine from splashing, the vertical dimension of the upper vertical wall 26BU is preferably 3 mm or more, and more preferably 8 mm or more. On the other hand, if the vertical dimension of the upper vertical wall 26BU is large, when the container 20 is tilted forward to drain the wastewater after use of the portable toilet 1, the last remaining wastewater tends to jump in front of the upper vertical wall 26BU and hit the upper vertical wall 26BU and splash out. From the viewpoint of preventing such splashing of wastewater, the vertical dimension of the upper vertical wall 26BU is preferably 30 mm or less, and more preferably 20 mm or less. If the vertical dimension of the upper and lower vertical walls 26BU is 17 mm or less, the splashing of wastewater can be further prevented.

Figure 11 is a vertical cross-sectional view of the front peripheral wall 26B, taken along line XI-XI in Figure 4. The vertical cross-section shown in Figure 11 is a vertical cross-sectional view of the front peripheral wall 26B at a midpoint between the rear end 26Bb of the front peripheral wall 26B and the front end 20f of the container 20. As shown in Figure 11, the front peripheral wall 26B has a lower wall portion 27D, a left wall portion 27L extending upward from the left end of the lower wall portion 27D, and a right wall portion 27R extending upward from the right end of the lower wall portion 27D. As shown in Figure 3, the lower wall portion 27D, the left wall portion 27L, and the right wall portion 27R form a flow path 27 that extends forward and backward when viewed from above.

The left and right widths W27 of the flow path 27 are relatively large. The left and right widths W27 of the flow path 27 referred to here refer to the left and right widths at the cross section of the flow path 27 (cross section at the intermediate position between the rear end 26Bb of the front peripheral wall 26B and the front end 20f of the container 20). The left and right widths W27 of the flow path 27 are larger than half the radius r24 of the bottom wall 24. The left and right widths W27 of the flow path 27 are also larger than the radius r24A of the horizontal wall 24A of the bottom wall 24. Here, the left and right widths W27 of the flow path 27 are larger than the radius r24 of the bottom wall 24. The left and right widths W27 of the flow path 27 are also larger than the radius r28 of the annular leg 28 (see FIG. 6). The radius of the annular leg 28 means 1/2 the inner diameter of the annular leg 28. The annular leg 28 is formed in a substantially annular shape when viewed from below. The term "approximately annular" includes a shape that goes around the center 24C of the bottom wall 24 (i.e., a strict annular shape) and a shape in which a slit 28a is provided in part of the annular shape, as shown in FIG.

The upper limit of the width W27 of the flow passage 27 from left to right is not particularly limited, but it is preferable that it is, for example, 170 mm or less. This makes it easier to pour wastewater all at once without overflowing, even into the relatively small water collection area of a standard Japanese-style toilet.

In the portable toilet 1, it is recommended that a predetermined volume of water be stored in the bucket 10 before use. As shown in FIG. 7, the peripheral wall 26 is provided with a step 25 as a marker indicating the position of the water surface when a predetermined volume of water is stored in the container 20. Here, the step 25 is provided at the position of the water surface when 1 liter of water is stored in the container 20. Since a sufficient water level can be secured by storing 1 liter of water, feces are usually submerged in water, and the generation of odor can be suppressed. The step 25 is provided on the rear peripheral wall 26A, but may be provided on the front peripheral wall 26B. Note that the marker may be any visible one and is not limited to the step 25. Instead of the step 25, a groove, a protrusion, or the like may be used as the marker. Also, colored lines, figures, letters, symbols, or the like may be used as the marker. However, it is particularly preferable to use the step 25 as the marker, since visibility can be ensured even if dirt accumulates, and the step 25 will not fade even after long-term use.

7, the upper edge portion 22 has an inner peripheral wall 22A located above the peripheral wall 26, an upper wall 22B extending outward from the upper end of the inner peripheral wall 22A, and an outer peripheral wall 22C extending downward from the outer end of the upper wall 22B. The upper edge portion 22 is formed in a shape that is folded downward from the inside to the outside. The upper edge portion 22 is formed in an inverted U-shaped cross section. The inner peripheral wall 22A may coincide with the upper vertical wall 26BU described above, or may be part of the upper vertical wall 26BU.

As shown in Figure 4, the left and right portions of the container 20 are formed with axial holes 30 into which the handle 50 (see Figure 2) engages. Here, the axial holes 30 are formed in the left and right portions of the outer peripheral wall 22C of the upper edge portion 22.

As shown in FIG. 12, the shaft hole 30 includes a circular hole 31 and a vertical hole 32 extending upward from the circular hole 31. The imaginary line 30S in FIG. 12 is a line representing the boundary between the circular hole 31 and the vertical hole 32. The circular hole 31 is an example of a lower hole located at the bottom, and the vertical hole 32 is an example of an upper hole extending upward from the lower hole. The vertical hole 32 extends straight upward from the circular hole 31. The vertical hole 32 has a front edge 32f and a rear edge 32b that extend linearly up and down, and an upper edge 32t that connects the upper ends of the front edge 32f and the rear edge 32b. The upper edge 32t extends horizontally. The rear edge 32b is formed behind the front edge 32f and faces the front edge 32f. In this embodiment, the front edge 32f extends upward from the front end 31f of the circular hole 31. The shaft hole 30 is formed in a b-shape. A center line 32CL (a line extending vertically passing through the middle between the leading edge 32f and the trailing edge 32b) of the vertical hole 32 is offset toward the leading edge 32f from the center 31C of the circular hole 31. A vertical length H32f of the leading edge 32f is longer than a hole width W32 between the leading edge 32f and the trailing edge 32b.

13, the periphery of the vertical hole 32 of the outer peripheral wall 22C is provided with an inverted U-shaped reinforcing rib 34 that protrudes outward. The reinforcing rib 34 protrudes from the outer peripheral wall 22C in one axial direction. In detail, the periphery of the left vertical hole 32 is provided with a reinforcing rib 34 that protrudes leftward, and the periphery of the right vertical hole 32 is provided with a reinforcing rib 34 that protrudes rightward. The reinforcing rib 34 has a front rib 34A located in front of the vertical hole 32, a rear rib 34B located behind the vertical hole 32, and an upper rib 34T located above the vertical hole 32. In addition, the periphery of the circular hole 31 is also provided with an arc-shaped reinforcing rib 35 that protrudes outward. The reinforcing rib 34 and the reinforcing rib 35 are connected. In this embodiment, the reinforcing rib 34 and the reinforcing rib 35 are formed to surround the entire shaft hole 30.

Additionally, the outer peripheral wall 22C is provided with transverse ribs 36A and 36B extending forward and rearward from the reinforcing rib 34. The transverse rib 36A is formed above the transverse rib 36B. The front-to-rear length of the lower transverse rib 36B is longer than the front-to-rear length of the upper transverse rib 36A.

4 and 5, a handle 40 is provided at the rear of the upper edge 22 and at the center in the left-right direction. FIG. 14 is a vertical cross-sectional view of the handle 40, and is an enlarged view of part XIV in FIG. 7. As shown in FIG. 14, the handle 40 has a curved wall 41 extending rearward and downward from the lower end of the outer peripheral wall 22C, a horizontal wall 42 extending rearward from the rear end of the curved wall 41, and a vertical wall 43 extending downward from the rear end of the horizontal wall 42. Also, as shown in FIG. 5, the handle 40 has a left wall 44L and a right wall 44R provided on the left and right sides of the curved wall 41, the horizontal wall 42, and the vertical wall 43, respectively. In this embodiment, the horizontal wall 42 extends in the horizontal direction, and the vertical wall 43 extends in the vertical direction. However, the horizontal wall 42 may be slightly inclined from the horizontal direction, and the vertical wall 43 may be slightly inclined from the vertical direction.

The left-right length W40 (see FIG. 5) of the handle 40 is set to a length that allows at least three fingers to be inserted. Here, the left-right length W40 of the handle 40 is set to 35 mm or more. The left-right length W40 of the handle refers to the inner dimension of the handle 40. In other words, it refers to the distance between the right side of the left wall 44L of the handle 40 and the left side of the right wall 44R of the handle 40. As shown in FIG. 14, the vertical length H43 of the vertical wall 43 is 2 mm or more, preferably 4 mm or more, so that the handle 40 can be easily hung. The radius of curvature R of the curved wall 41 is at least 1 mm or more, preferably 3 mm or more. In addition, the radius of curvature R of the curved wall 41 is preferably 30 mm or less.

Figure 15 is an enlarged cross-sectional view of the front end of the container 20, and is an enlarged view of part XV in Figure 7. As shown in Figure 15, the upper edge 22 of the container 20 is provided with a liquid-removing plate 23 that protrudes forward from the front of the outer peripheral wall 22C. Here, the liquid-removing plate 23 is formed flush with the upper wall 22B.

As shown in FIG. 2, the front-rear length of the container 20 is longer than the left-right length of the container 20. As shown in FIG. 4, the front-rear length L20f between the front end 20f of the container 20 and the axial hole 30 is longer than the front-rear length L20b between the rear end 20b of the container 20 and the axial hole 30. The front-rear length between the front end 20f of the container 20 and the axial hole 30 refers to the front-rear length between the front end 20f of the container 20 and the central position of the axial hole 30 in the front-rear direction (here, the position of the center 31C of the circular hole 31). Similarly, the front-rear length between the rear end 20b of the container 20 and the axial hole 30 refers to the front-rear length between the rear end 20b of the container 20 and the central position of the axial hole 30 in the front-rear direction (here, the position of the center 31C of the circular hole 31).

The above is the configuration of the container. Next, the handle 50 will be described. Figure 16 is a perspective view of the handle 50. Figure 17 is an enlarged view of part XVII in Figure 16.

＜Handle＞
As shown in FIG. 16, the handle 50 has a handle portion 51 and engaging portions 52 provided at both ends of the handle portion 51. The engaging portions 52 are portions that engage with the axial hole 30 of the container 20. As shown in FIG. 17, the engaging portions 52 extend inward from the tip of the handle portion 51. The engaging portions 52 have a shaft 54, a stopper 56 provided on the inside of the shaft 54, and a reinforcing portion 58 provided on the outside of the shaft 54. The stopper 56 is provided on the tip side of the shaft 54. In detail, the engaging portion 52 on the right side of the handle 50 has the reinforcing portion 58, the shaft 54 provided to the left of the reinforcing portion 58, and the stopper 56 provided to the left of the shaft 54. The engaging portion 52 on the left side of the handle 50 has the reinforcing portion 58, the shaft 54 provided to the right of the reinforcing portion 58, and the stopper 56 provided to the right of the shaft 54.

The shaft 54 is formed in a square prism shape. As shown in FIG. 18, the cross-sectional shape of the shaft 54 is formed in a square shape. The square shape referred to here is not limited to a strict square shape with right-angled corners, but also includes a square shape with rounded corners as shown in FIG. 18. The shaft 54 has a first shaft edge 54a, a second shaft edge 54b located on the opposite side of the first shaft edge 54a, a third shaft edge 54c connecting one end of the first shaft edge 54a and one end of the second shaft edge 54b, and a fourth shaft edge 54d connecting the other end of the first shaft edge 54a and the other end of the second shaft edge 54b. The length of the first shaft edge 54a and the second shaft edge 54b is longer than the length of the third shaft edge 54c and the fourth shaft edge 54d.

Because the handle 50 is rotatably engaged with the container 20, the handle 50 can be tilted forward as shown in Fig. 19. Also, the handle 50 can be stood up as shown in Fig. 20. Also, the handle 50 can be tilted backward as shown in Fig. 21. When the handle 50 is tilted backward, it rests on the side wall 42 of the handle 40. When the handle 50 is tilted backward, it is supported by the handle 40.

The shaft 54 is inserted into the shaft hole 30. The shaft 54 is formed to a size that allows it to rotate within the circular hole 31. The maximum dimension L54 of the cross section of the shaft 54 (here, the diagonal dimension; see Figure 18) is smaller than the inner diameter of the circular hole 31. When the shaft 54 is within the circular hole 31, the handle 50 can be rotated. When the handle 50 is in the folded position, the shaft 54 is positioned within the circular hole 31.

When the handle 50 is lifted upright (see FIG. 20), as shown in FIG. 22, the shaft 54 moves from the circular hole 31 to the vertical hole 32 and fits into the vertical hole 32. When the shaft 54 fits into the vertical hole 32, the rotation of the shaft 54 is restricted by the vertical hole 32. Therefore, when the handle 50 is lifted upright, the handle 50 cannot rotate. The shaft 54 and the vertical hole 32 form a locking mechanism 55 that fixes the handle 50 to be unrotatable relative to the container 20 when the handle 50 is lifted upright.

When the shaft 54 is fitted into the vertical hole 32, the first shaft edge 54a faces the front edge 32f of the vertical hole 32, and the second shaft edge 54b faces the rear edge 32b of the vertical hole 32. The third shaft edge 54c abuts the upper edge 32t of the vertical hole 32. The width W32 of the vertical hole 32 (see FIG. 12) is equal to or slightly greater than the length H54c of the third shaft edge 54c. The vertical length H32f of the front edge 32f of the vertical hole 32 is longer than the length H54a of the first shaft edge 54a. The vertical length H32b of the rear edge 32b of the vertical hole 32 is shorter than the length H54a of the first shaft edge 54a.

As shown in Figure 18, the reinforcing portion 58 is formed in a rectangular prism shape, similar to the shaft 54. The cross-sectional shape of the reinforcing portion 58 is formed in a rectangular shape that is one size larger than the shaft 54. As shown in Figure 22, when the shaft 54 fits into the vertical hole 32, the reinforcing portion 58 is inserted inside the reinforcing rib 34. The reinforcing portion 58 fits inside the reinforcing rib 34 and comes into contact with the reinforcing rib 34.

17, the stopper 56 has a disk-shaped stopper body 56A and a protrusion 56B protruding from the stopper body 56A. When viewed from the axial direction of the shaft 54, the stopper 56 is formed in a b-shape. The stopper 56 is provided to prevent the engagement portion 52 of the handle 50 from slipping out of the shaft hole 30. Figures 23 to 25 are schematic diagrams showing the shaft hole 30, the stopper 56, and the shaft 54 when viewed from the axial direction of the shaft 54. Figures 23 to 25 are diagrams showing the right outer peripheral wall 22C of the container 20 as viewed from the back side (in other words, diagrams showing the right outer peripheral wall 22C of the container 20 as viewed from the left side to the right).

23, when the handle 50 is tilted down, at least a portion of the stopper body 56A is located inside the circular hole 31 as viewed from the axial direction. The stopper body 56A may be formed in a circular shape having an outer diameter equal to or smaller than the inner diameter of the circular hole 31 as viewed from the axial direction, but here it is formed in a circular shape having an outer diameter slightly larger than the inner diameter of the circular hole 31. The outer diameter D56A of the stopper body 56A is larger than the hole width W32 of the vertical hole 32.

When the handle 50 is tilted backward as shown in FIG. 21, the protrusion 56B protrudes upward from the stopper body 56A as viewed from the axial direction as shown in FIG. 23. When the handle 50 is tilted backward, the protrusion 56B is located inside the vertical hole 32 as viewed from the axial direction. The container 20 is made of resin and has elasticity. When the stopper 56 is inserted into the axial hole 30 with the handle 50 tilted backward, the circular hole 31 is temporarily pushed wide by the stopper body 56A. Therefore, the stopper body 56A can pass through the circular hole 31. Also, since the protrusion 56B is located inside the vertical hole 32, it can pass through the vertical hole 32 as it is. Therefore, by pressing the stopper 56 against the axial hole 30 from the front side with the handle 50 tilted backward, the stopper 56 can be positioned on the back side of the axial hole 30 (in other words, inside the outer peripheral wall 22C).

As shown in Figure 24, when the handle 50 is rotated from its reclined position, the protrusion 56B moves outward from the axial hole 30 when viewed from the axial direction. The protrusion 56B overlaps with the peripheral portion of the axial hole 30 in the outer wall 22C when viewed from the axial direction. The abutment of the protrusion 56B with the peripheral portion of the axial hole 30 restricts the handle 50 from shifting in the axial direction and prevents the handle 50 from coming out of the axial hole 30.

When the handle 50 is lifted upright as shown in Figure 20, the shaft 54 moves from the circular hole 31 to the vertical hole 32 as shown in Figure 25. The protrusion 56B is located in front of the vertical hole 32 when viewed from the axial direction. In this case, too, the protrusion 56B overlaps with the surrounding portion of the shaft hole 30 in the outer wall 22C when viewed from the axial direction. This prevents the handle 50 from slipping out of the shaft hole 30.

After using the portable toilet 1, the user removes the bucket 10 from the toilet body 2 by lifting the handle 50 upright. The user also carries the bucket 10 to the toilet by moving while holding the handle 50. As described above, the length L20f of the front part of the axial hole 30 of the container 20 is longer than the length L20b of the rear part of the axial hole 30 (see FIG. 4). However, the front peripheral wall 26B is inclined obliquely upward when viewed from the side. The container 20 is formed so that when a predetermined amount of water or less is stored, the front-to-rear position of the center of gravity of the container 20 and the water is located near the axial hole 30 regardless of the water level. In other words, the container 20 is formed so that when a predetermined volume of water or less is stored, the combined center of gravity of the container 20 and the water is substantially located directly below the axial hole 30, and the center of gravity is formed to have little fluctuation in the front-to-rear position even if the water level changes.

If the container 20 is too full, it becomes difficult to carry the bucket 10, so in the portable toilet 1, an upper limit for the storage volume of the container 20 is often set in advance. The above-mentioned predetermined volume may be equal to the upper limit for the storage volume of the container 20, for example. However, this is not limited. The above-mentioned predetermined volume may be less than the upper limit for the storage volume of the container 20. Here, as shown in FIG. 20, the container 20 is formed so that when water is stored in an amount equal to or less than 50% of the internal volume of the container 20, the position of the center of gravity of the container 20 and the water in the front-to-rear direction is located between a position P1 10 mm forward from the front end of the axial hole 30 and a position P2 10 mm rearward from the rear end of the axial hole 30, regardless of the water level.

As described above, the bucket 10 is formed so that the front-rear position of the center of gravity does not change much even when the water level changes. However, when the bucket 10 is removed from the toilet body 2 or transported, it may tilt due to shaking or contact with furniture. Depending on the shape of the container 20, the center of gravity may move to the tilted side, and gravity may act to promote the tilt. In that case, the tilt may become large and wastewater may spill from the container 20. For example, this may be the case when a corner shape where water can accumulate exists on the tilted side at a location away from the vertical plane passing through the axis C1 (see Figure 2) of the axial hole 30. However, the above phenomenon can be avoided by devising the shape of the container 20 so as to reduce the volume of water that accumulates on the tilted side. For example, the above phenomenon can be avoided by angling the bottom, making the area between the bottom and the front and rear walls curved or spherical, or deepening the bottom so as to reduce the angle between the bottom and the front and rear walls, which becomes the corner of the accumulation.

In this embodiment, the container 20 is formed as follows. In Figs. 26(a) to (c), the vertical line VP represents a vertical plane passing through the axis C1 of the shaft hole 30. The angle θ represents the inclination angle of the container 20 with respect to the horizontal plane. The symbol G represents the position of the overall center of gravity of the container 20 and water. In this embodiment, the container 20 is formed so that when 50% or less of the internal volume of the container 20 is stored with water, the center of gravity G is located forward of the vertical plane VP when the container 20 is tilted downward at an angle θ greater than 0 degrees and less than 20 degrees with respect to the horizontal plane, as shown in Fig. 26(b). Also, the container 20 is formed so that when 50% or less of the internal volume of the container 20 is stored with water, the center of gravity G is located rearward of the vertical plane VP when the container 20 is tilted downward at an angle θ greater than 0 degrees and less than 20 degrees with respect to the horizontal plane, as shown in Fig. 26(c).

According to this embodiment, when the bucket 10 is removed from the toilet body 2 or when it is transported, at least if the container 20 is tilted at an angle of less than 20 degrees, gravity acts to return the tilt. This prevents the tilt from becoming too large, and suppresses wastewater from spilling out of the container 20. Note that the container 20 may be configured so that gravity acts to return the tilt even if it is tilted at an angle of 20 degrees or more.

The above is the configuration of the portable toilet 1 and bucket 10 according to this embodiment. Next, an example of how to use the bucket 10 will be described.

<How to use the bucket>
When a user uses the portable toilet 1, wastewater accumulates in the bucket 10. To discard the wastewater in the bucket 10, the user first removes the bucket 10 from the toilet body 2 by standing and lifting the handle 50. At this time, the shaft 54 of the handle 50 fits into the vertical hole 32 of the container 20, and the handle 50 is fixed to the container 20 so that it cannot rotate. Therefore, the user can easily remove the bucket 10.

Next, the user moves to the toilet while holding the handle 50. At this time, because the handle 50 is fixed to the container 20 so that it cannot rotate, the container 20 is prevented from shaking. Even if the container 20 hits furniture or the like while being carried, it will not tilt significantly. Therefore, it is possible to prevent wastewater from spilling when the bucket 10 is being carried.

After arriving at the toilet, the user discharges the wastewater from the bucket 10 into the toilet bowl. The operation of discharging wastewater from the bucket 10 into the toilet bowl will be described with reference to Figures 27 to 29. Figures 27(a), 28(a), and 29(a) are side views that typically show the bucket and toilet bowl, while Figures 27(b), 28(b), and 29(b) are schematic views that typically show the shaft and shaft hole.

As shown in Fig. 27(a), the user stands above the toilet bowl 60 and grasps the handle 50 with one hand h1 while hooking the handle 40 of the container 20 from below with the other hand h2. Then, by lifting the handle 40, the container 20 is tilted forward together with the handle 50.

As shown in Figure 28(a), by gradually increasing the inclination of the container 20, wastewater in the container 20 is quickly drained into the toilet bowl. At this time, as shown in Figure 28(b), the shaft 54 of the handle 50 is pushed from the periphery of the vertical hole 32, and a force (see arrow A1) acts on the shaft 54 to tilt it away from the vertical hole 32. However, since the vertical length of the front edge 32f of the vertical hole 32 is longer than the length of the first shaft edge 54a of the shaft 54, the lower end 54ad of the first shaft edge 54a remains supported by the front edge 32f of the vertical hole 32, even if the shaft 54 tilts. Therefore, the shaft 54 is prevented from coming off the vertical hole 32.

29(a) and (b), even if the container 20 is tilted significantly, the shaft 54 does not come out of the vertical hole 32, and the handle 50 is not released. The container 20 can be tilted as intended by the user while the handle 50 remains fixed. If the handle 50 is unintentionally released while tilting the container 20, the container 20 may tilt suddenly, causing wastewater to be rapidly discharged and splashed outside the toilet bowl 60. However, this embodiment can prevent this from happening.

After draining the wastewater from the container 20 as described above, the user washes the bucket 10. In doing so, for example, the bucket 10 is placed on a sink or the floor of a bathtub, and the handle 50 is tilted backwards. This allows the inside of the container 20 to be washed without being hindered by the handle 50.

After cleaning the bucket 10, the user fills the container 20 with a specified volume of water. Then, the user stands up and lifts the handle 50, carries the bucket 10 while holding the handle 50, and attaches it to the toilet body 2. After that, the handle 50 is tilted backwards and the toilet seat 5 (see Figure 1) is tilted forwards. This makes the portable toilet 1 usable again. Note that the task of filling the container 20 with water does not necessarily have to be done before the bucket 10 is attached to the toilet body 2, but may be done after it is attached to the toilet body 2.

The above is one example of how to use the bucket 10. Note that, here, the wastewater from the bucket 10 is discharged into the toilet bowl 60 of the toilet, but the place where the wastewater is discharged is not limited to the toilet bowl of the toilet.

Effects of the embodiment
Next, various effects brought about by this embodiment will be described.

As described above, according to the bucket 10 of this embodiment, the axis 54 of the handle 50 can rotate inside the circular hole 31 of the container 20, so the handle 50 can rotate relative to the container 20. When the bucket 10 is attached to the toilet body 2 of the portable toilet 1, the handle 50 can be tilted backward (see FIG. 1), so the handle 50 does not get in the way when the portable toilet 1 is in use. On the other hand, when the handle 50 is lifted upright, the axis 54 of the handle 50 moves from the circular hole 31 of the container 20 to the vertical hole 32 and fits into the vertical hole 32. This fixes the handle 50 so that it does not rotate relative to the container 20. This makes it easier for the user to carry the bucket 10 without spilling sewage.

When draining wastewater from the bucket 10, the container 20 is tilted while holding the handle 50. According to the bucket 10 of this embodiment, the vertical length H32f of the front edge 32f of the vertical hole 32 is longer than the length H54a of the first axis edge 54a of the shaft 54. Therefore, while the container 20 is tilted, the lower end of the first axis edge 54a remains supported by the front edge 32f, and the shaft 54 does not come off the vertical hole 32 (see Figures 28 (b) and 29 (b)). Therefore, the fixation of the handle 50 is not released, and the container 20 can be prevented from being tilted suddenly when tilting the container 20. Therefore, it is possible to prevent wastewater from being forcefully discharged from the container 20. It is possible to prevent wastewater from splashing outside the toilet bowl 60.

In this embodiment, as shown in FIG. 12, the shaft hole 30 is formed in a b-shape when viewed from the axial direction of the shaft 54. The center line 32CL of the vertical hole 32 is shifted from the center 31C of the circular hole 31 toward the front edge 32f. When the vertical hole 32 is formed so that the center line 32CL passes through the center 31C of the circular hole 31, in order to ensure the same vertical length H32f of the front edge 32f, it is necessary to lengthen the vertical length of the shaft hole 30. When the center line 32CL passes through the center 31C of the circular hole 31, the vertical length of the shaft hole 30 is the sum of the vertical length H31 of the circular hole 31 and the vertical length H32f of the front edge 32f. However, according to this embodiment, the vertical length of the shaft hole 30 is shorter than the sum of the vertical length H31 of the circular hole 31 and the vertical length H32f of the front edge 32f. Therefore, the vertical length of the front edge 32f can be ensured while suppressing the overall vertical dimension of the shaft hole 30. According to this embodiment, the shaft hole 30 that provides the above-mentioned effects can be made smaller.

In this embodiment, the vertical length H32b of the rear edge 32b of the vertical hole 32 is shorter than the length H54a of the first shaft edge 54a. This further reduces the vertical dimension of the shaft hole 30.

Although not particularly limited, in this embodiment, the vertical length H32f of the front edge 32f is longer than the hole width W32 between the front edge 32f and the rear end 32b of the vertical hole 32. The shaft 54 is configured to be less likely to come off the vertical hole 32. This makes it possible to more reliably prevent the handle 50 from being released when the container 20 is tilted.

According to this embodiment, the cross-sectional shape of the shaft 54 is formed in a rectangular shape, and the length of the first shaft edge 54a and the second shaft edge 54b is longer than the length of the third shaft edge 54c and the fourth shaft edge 54d. Since the length of the first shaft edge 54a is relatively long, the contact area between the first shaft edge 54a and the front edge 32f is relatively large. The shaft 54 is sufficiently supported by the front edge 32f of the vertical hole 32. Therefore, when the container 20 is tilted, the shaft 54 can be more reliably prevented from coming out of the vertical hole 32, and the fixation of the handle 50 can be more reliably prevented.

According to this embodiment, the handle 50 is provided with a stopper 56 provided on the tip side of the shaft 54, but when the handle 50 is tilted backward, the protrusion 56B of the stopper 56 is located inside the vertical hole 32 as viewed from the axial direction of the shaft 54. Therefore, it is easy to pass the stopper 56 through the shaft hole 30, and the handle 50 can be easily attached to the container 20. When the handle 50 is upright and lifted, the protrusion 56B of the stopper 56 overlaps with the peripheral portion of the vertical hole 32 of the container 20 as viewed from the axial direction of the shaft 54. Therefore, even if the handle 50 is displaced in the axial direction of the shaft 54, the protrusion 56B of the stopper 56 abuts on the peripheral portion of the vertical hole 32, so that the shaft 54 does not come out of the shaft hole 30 and the handle 50 is prevented from coming off the container 20. Therefore, the handle 50 is not easily removed from the container 20.

According to this embodiment, the container 20 has an inverted U-shaped reinforcing rib 34, and the shaft 54 has a reinforcing portion 58 that is inserted into the inside of the reinforcing rib 34 when the handle 50 is raised upright. Therefore, when the container 20 is tilted, the force applied to the container 20 from the handle 50 is supported not only by the front edge 32f of the vertical hole 32, but also by the reinforcing rib 34. Since the surrounding portion of the vertical hole 32 is difficult to deform, the shaft 54 is further prevented from coming off the vertical hole 32. Therefore, it is possible to more effectively prevent the handle 50 from being released when the container 20 is tilted.

According to this embodiment, the container 20 further has horizontal ribs 36A extending from the reinforcing ribs 34 to the front and rear of the vertical hole 32. This makes the area around the vertical hole 32 even less likely to deform, and more reliably prevents the shaft 54 from coming out of the vertical hole 32. This more effectively prevents the handle 50 from being released when the container 20 is tilted.

Before use, the portable toilet 1 is filled with water in the bucket 10 to a specified water level. As shown in Figure 10, by slanting the bottom wall 24 of the container 20 so that it slopes upward as it moves forward, it becomes easier to ensure a certain water level in the container 20 even if the amount of water is relatively small. This allows water to be saved.

As shown in Figure 15, the upper edge 22 of the container 20 has a drain plate 23 that protrudes forward from the front of the outer peripheral wall 22C. Therefore, when the container 20 is tilted forward to drain wastewater, the wastewater flows down from the tip of the drain plate 23. This prevents the wastewater from running down the outer peripheral wall 22C and the front peripheral wall 26B. This prevents the outer peripheral wall 22C and the front peripheral wall 26B from becoming dirty. This prevents the outer peripheral wall 22C and the front peripheral wall 26B of the container 20 from becoming dirty when wastewater is drained.

<Other embodiments>
Although one embodiment of the present invention has been described above, the embodiment is merely an example. The present invention can be embodied in various other forms. Next, examples of other embodiments will be briefly described.

In the above embodiment, the stopper 56 is inserted into the shaft hole 30 with the handle 50 tilted backward (see FIG. 23), but as shown in FIG. 30, the stopper 56 may be inserted into the shaft hole 30 with the handle 50 tilted forward. That is, the stopper 56 may be formed so that the protrusion 56B is located inside the vertical hole 32 when viewed from the axial direction when the handle 50 is tilted forward. In this case, the handle 50 can be attached to the container 20 by tilting the handle 50 forward. When the container 20 is attached to the toilet body 2 or placed on the floor, etc., if the handle 50 is tilted backward, the protrusion 56B of the stopper 56 is located below the circular hole 31, and the protrusion 56B can engage with the lower part of the circular hole 31. Therefore, the handle 50 can be prevented from coming off the container 20 not only when the handle 50 is lifted, but also when the handle 50 is tilted backward.

As shown in Figure 3, in the above embodiment, no spout is formed on the upper edge 22 of the container 20, but as shown in Figure 31, a downwardly recessed spout 29 may be formed on the front end of the upper edge 22 of the container 20. This allows wastewater to be concentrated and discharged from the spout 29 when the container 20 is tilted forward. This prevents wastewater from scattering to the left and right, and allows the wastewater to be discharged smoothly into the toilet bowl.

The shapes of the bottom wall 24 and peripheral wall 26 of the container 20 described above are merely examples and are not limiting in any way.

The cross-sectional shape of the shaft 54 is not limited to a square shape. Any shape having a linear first shaft edge 54a and a linear second shaft edge 54b may be adopted as the cross-sectional shape of the shaft 54.

The vertical length H32b of the rear edge 32b of the vertical hole 32 may be equal to the length H54a of the first axial edge 54a or may be longer than the length H54a of the first axial edge 54a.

The vertical length H32f of the front edge 32f of the vertical hole 32 may be less than the hole width W32 of the vertical hole 32.

The length of the first shaft edge 54a and the second shaft edge 54b of the shaft 54 may be less than or equal to the length of the third shaft edge 54c and the fourth shaft edge 54d.

Reinforcing rib 34 may be omitted. Cross rib 36A or 36B may be omitted.

The length L20f in the front-to-rear direction between the front end 20f of the container 20 and the axial hole 30 may be equal to the length L20b in the front-to-rear direction between the rear end 20b of the container 20 and the axial hole 30, or may be shorter than the length L20b.

The liquid drain plate 23 of the container 20 is not necessary.

1...portable toilet, 2...toilet body, 10...portable toilet bucket, 20...container, 22...upper edge, 22C...outer wall, 23...liquid draining plate, 24...bottom wall, 29...spout, 30...shaft hole, 31...circular hole, 32...vertical hole, 32f...front edge, 32b...rear edge, 34...reinforcing rib, 36A...horizontal rib, 36B...horizontal rib, 50...handle, 54...shaft, 54a...first shaft edge, 54b...second shaft edge, 54c...third shaft edge, 54d...fourth shaft edge, 58...reinforcing part

Claims (14)

a container having an upwardly open top edge and a left side portion and a right side portion;
a handle extending from the left portion to the right portion of the container and rotatably engaged with the container;
At least one of the left and right portions of the container is formed with an axial hole including a circular hole and a vertical hole extending linearly upward from the circular hole;
The handle has a shaft inserted into the shaft hole,
The shaft is rotatable within the circular hole, and is configured to move from the circular hole to the vertical hole and fit into the vertical hole when the handle is raised up,
The vertical hole has a front edge extending upward in a straight line from a front end of the circular hole, and a rear edge formed rearward of the front edge and extending upward in a straight line,
the shaft has a linear first shaft edge facing the leading edge and a linear second shaft edge facing the trailing edge when the shaft is fitted into the vertical hole,
The vertical length of the front edge is longer than the length of the first shaft edge,
The vertical length of the rear edge is shorter than the length of the first shaft edge,
a cross-sectional shape of the shaft is formed in a quadrangle shape having the first shaft edge, the second shaft edge, a third shaft edge connecting one end of the first shaft edge and one end of the second shaft edge, and a fourth shaft edge connecting the other end of the first shaft edge and the other end of the second shaft edge,
A portable toilet bucket, wherein the length of the first axis edge and the second axis edge is longer than the length of the third axis edge and the fourth axis edge. The portable toilet bucket according to claim 1, wherein the vertical length of the front edge of the vertical hole is longer than the width of the hole between the front edge and the rear edge of the vertical hole. The handle has a stopper provided on a tip side of the shaft,
The stopper has a stopper body portion at least a part of which is located inside the circular hole when viewed from the axial direction of the shaft when the handle is tilted down, and a protrusion protruding upward from the stopper body portion,
A portable toilet bucket as described in claim 1 or 2, wherein the protrusion is positioned inside the vertical hole when viewed from the axial direction of the shaft when the handle is tilted down, and is formed so as to overlap with the peripheral portion of the vertical hole of the container when viewed from the axial direction of the shaft when the handle is raised upright. The stopper body is formed in a circular shape having an outer diameter larger than a width of the vertical hole when viewed in the axial direction of the shaft,
4. The portable toilet bucket of claim 3 , wherein the cross-sectional shape of the shaft is rectangular. The axial hole is formed in a left portion and a right portion of the container,
5. The portable toilet bucket according to claim 3 or 4 , wherein the shaft and the stopper are provided on both sides of the handle. A portable toilet bucket as described in claim 5, wherein the protrusion is formed so as to be located inside the vertical hole when viewed from the axial direction of the shaft when the handle is tilted backward, and to be located in front of the vertical hole when viewed from the axial direction of the shaft when the handle is lifted upright. The container has an inverted U-shaped reinforcing rib protruding from a peripheral portion of the vertical hole toward one side in the axial direction of the shaft,
A portable toilet bucket as described in any one of claims 1 to 6, wherein the handle is provided on one side of the axial direction of the shaft relative to the first shaft edge and the second shaft edge, and has a reinforcing portion that is inserted into the inside of the reinforcing rib when the handle is lifted up in an upright position. 8. The portable toilet bucket of claim 7 , wherein the container has transverse ribs extending forwardly or rearwardly from the reinforcing rib. The portable toilet bucket according to any one of claims 1 to 8 , wherein the front-to-back length of the container is longer than the left-to-right length of the container. A portable toilet bucket as described in any one of claims 1 to 9 , wherein a length in the front-to-rear direction between a front end of the container and the axial hole is longer than a length in the front-to-rear direction between a rear end of the container and the axial hole. The portable toilet bucket according to any one of claims 1 to 10 , wherein the bottom wall of the container is inclined upward as it goes forward. A portable toilet bucket as described in any one of claims 1 to 11 , wherein the upper edge of the container has an outer peripheral wall extending vertically and a liquid drain plate protruding forward from a front portion of the outer peripheral wall. 13. The portable toilet bucket of claim 1, wherein a downwardly recessed spout is formed at a front end of the upper edge of the container. A portable toilet comprising the portable toilet bucket according to any one of claims 1 to 13 .

Images