Toilet for animals

Abstract

Provided is an animal toilet suitable for suppressing leakage of odor from a lower space to an upper space without hindering smooth movement of urine from the upper space to the lower space. The toilet (1) for animals comprises a main body part (10) and a partition part (20). The main body section (10) receives excreted urine. The partition part (20) divides the internal space of the main body part (10) into an upper space (S1) and a lower space (S2). The partition (20) has a plurality of through-holes (22) through which urine passes. The plurality of through holes (22) include a through hole (22a) and a through hole (22b). The through-hole (22b) is located at the same height as the through-hole (22a) and further to the outside than the through-hole (22a). The opening area of the through hole (22b) is smaller than the opening area of the through hole (22a).

Description

Technical Field

[0001] The present invention relates to animal litter boxes. Background Art

[0002] As a conventional animal toilet, there is a toilet described in Patent Document 1, for example. The animal toilet described in the document includes a main body (tray) for receiving excreted urine and a partition (grate) for dividing the internal space of the main body into an upper space and a lower space. The partition has a plurality of through holes for urine to pass through. A plurality of granular bodies with low water absorption are laid in the upper space (on the partition). An absorbent sheet for absorbing urine is provided in the lower space. Urine excreted into the main body passes through the gaps between the granular bodies and then moves from the upper space to the lower space through the through holes of the partition. The urine moved to the lower space is accumulated in the lower space in a state of being absorbed by the absorbent sheet.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2003-180182 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the above-mentioned animal toilet, the odor generated by the urine accumulated in the lower space may leak into the upper space through the through holes. This causes the odor to float around the animal toilet. In order to suppress the leakage of the odor, it is considered to reduce the opening area of ​​each through hole. However, if the opening area of ​​each through hole is reduced, it will hinder the smooth movement of urine from the upper space to the lower space.

[0008] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an animal litter box suitable for suppressing leakage of odor from a lower space to an upper space without hindering smooth movement of urine from an upper space to a lower space.

[0009] Means for solving problems

[0010] The animal litter box of the present invention is characterized in that the animal litter box comprises: a main body portion that receives excreted urine; and a partition portion that has a plurality of through holes for the urine to pass through, the partition portion dividing the internal space of the main body portion into an upper space and a lower space, the plurality of through holes including: a first through hole; and a second through hole that is located at the same height as the first through hole and is located further outward than the first through hole, the opening area of ​​the second through hole being smaller than the opening area of ​​the first through hole.

[0011] In the animal toilet, a first through hole and a second through hole are provided in the partition. The second through hole is located at an outer side than the first through hole. Moreover, the opening area of ​​the second through hole is smaller than the opening area of ​​the first through hole. Thus, by reducing the opening area of ​​the second through hole located at the relatively outer side, it is difficult for the odor generated by the urine accumulated in the lower space to leak into the upper space. On the other hand, by increasing the opening area of ​​the first through hole, it is easy for the urine to move smoothly from the upper space to the lower space.

[0012] Effects of the Invention

[0013] According to the present invention, an animal toilet suitable for suppressing leakage of odor from the lower space to the upper space without hindering smooth movement of urine from the upper space to the lower space is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an end view showing one embodiment of the animal litter box of the present invention.

[0015] Figure 2 1 is an end view showing the main body 10 .

[0016] Figure 3 1 is a front view showing the main body 10 .

[0017] Figure 4 1 is a plan view showing the main body 10 .

[0018] Figure 5 2 is a plan view showing the partition 20 .

[0019] Figure 6 It is a perspective view showing the drawer 50 .

[0020] Figure 7 It is a top view showing a partition 20 according to a modified example.

[0021] Figure 8 It is an end view for explaining a modified example of the main body 10 . DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and repeated descriptions are omitted.

[0023] Figure 11 is an end view showing an embodiment of an animal litter box of the present invention. The animal litter box 1 includes a main body 10, a partition 20, a plurality of granular bodies 30, a water-absorbent sheet 40, and a pull-out portion 50. The animal litter box 1 is, for example, a cat litter box. The main body 10 is formed of a box-shaped container and has a bottom portion 10a and a side portion 10b. The main body 10 receives excreted urine. The main body 10 has a substantially rectangular shape. As a material for the main body 10, for example, plastic can be used. Examples of the plastic include polypropylene and polyethylene.

[0024] Figure 2 as well as Figure 3 The figures are an end view and a front view of the main body 10. An opening 12 for inserting and removing the pull-out portion 50 is formed on the side surface 10b of the main body 10. The opening 12 is located near the bottom surface 10a and is in a horizontally long rectangular shape. Figure 3 The length of the opening 12 in the longitudinal direction (in the left-right direction) is substantially equal to the lateral width (inner dimension) of the main body 10, for example, not less than 20 cm and not more than 40 cm. Figure 3 The length in the up-down direction) is, for example, greater than 2 cm and less than 5 cm.

[0025] Figure 4 1 is a top view showing the main body 10. The main body 10 has a support portion 14. The support portion 14 protrudes from the side portion 10b to the inner side of the main body 10. The support portion 14 supports the partition 20 from below. The support portion 14 is provided on the entire inner periphery of the side portion 10b in the top view. That is, the support portion 14 is composed of a protrusion provided in a ring shape along the inner periphery of the side portion 10b. The inner periphery of the side portion 10b is roughly rectangular in the top view. Here, the roughly rectangular shape is not limited to a rectangle, but also includes a shape close to a rectangle such as a rounded quadrilateral. The protruding length of the support portion 14 (the length in the direction perpendicular to the inner surface of the side portion 10b on which the support portion 14 is provided) is, for example, greater than 5 mm and less than 15 mm. The support portion 14 can be integrally formed with the side portion 10b, or it can be installed on the side portion 10b after being separately formed from the side portion 10b.

[0026] Figure 51 is a top view showing the partition 20. The partition 20 is placed on the support 14. The partition 20 is not fixed to the main body 10. The partition 20 can be loaded and unloaded relative to the main body 10. The partition 20 can be arranged in the main body 10 in a state where its outer periphery as a whole is separated from the side portion 10b. The partition 20 is composed of a plate-like component and is in a flat plate shape. Therefore, the entire upper surface of the partition 20 is located in the same plane, and the entire lower surface of the partition 20 is also located in the same plane. The partition 20 is roughly rectangular in the top view. The partition 20 is arranged parallel to the bottom portion 10a. In addition, the partition 20 is arranged at a position separated from both the upper end of the main body 10 (side portion 10b) and the absorbent sheet 40. Thus, the partition 20 divides the internal space of the main body 10 into an upper space S1 and a lower space S2. The upper space S1 exists above the partition 20 and is a space where a plurality of granular bodies 30 are laid. The lower space S2 exists below the partition 20 and is a space for storing urine. As a material of the partition 20, for example, plastic can be used.

[0027] The partition 20 has a plurality of through holes 22 through which urine passes. In the following description, unless otherwise specified, "a plurality of through holes 22" refers to all through holes 22 provided in the partition 20. Each through hole 22 allows urine to pass through but does not allow the granules 30 to pass through. The plurality of through holes 22 are arranged in a lattice in the partition 20.

[0028] The plurality of through holes 22 include a through hole 22a (a first through hole) and a through hole 22b (a second through hole). In the present embodiment, the plurality of through holes 22 are composed only of the through hole 22a and the through hole 22b. In the top view, the shape of the through hole 22b is similar to the shape of the through hole 22a. In the present embodiment, the planar shape of each through hole 22a, 22b is circular. The plurality of through holes 22 are located at the same height. That is, the distance from each through hole 22 to the bottom portion 10a is constant. Therefore, the through hole 22b is located at the same height as the through hole 22a. However, the through hole 22b is located at a position closer to the outside than the through hole 22a. That is, when viewed from above, the shortest distance from the through hole 22b to the periphery of the partition 20 is smaller than the shortest distance from the through hole 22a to the periphery of the partition 20.

[0029] The opening area of ​​the through hole 22b is smaller than the opening area of ​​the through hole 22a. Figure 5 ). The opening area of ​​the through hole 22b is preferably less than 1 / 2 of the opening area of ​​the through hole 22a, and more preferably less than 1 / 4. The partition 20 has a plurality of through holes 22a and a plurality of through holes 22b. The number of through holes 22a is preferably not less than 30% and not more than 70% of the total number of through holes 22a and through holes 22b, and more preferably not less than 40% and not more than 60%.

[0030] The through holes 22a and the through holes 22b are respectively provided in the central portion 20a and the peripheral portion 20b of the partition 20. All the through holes 22a are provided in the central portion 20a, and all the through holes 22b are provided in the peripheral portion 20b. The central portion 20a is a portion surrounded by the smallest imaginary rectangle R1 that can enclose all the through holes 22a when viewed from above. The long side and the short side of the rectangle R1 are parallel to the long side and the short side of the partition 20, respectively. In the top view, the center of the central portion 20a coincides with the center of the partition 20. The peripheral portion 20b is a portion other than the central portion 20a in the partition 20, and surrounds the entire central portion 20a. In the top view, the area ratio of the central portion 20a in the partition 20 is preferably greater than 20% and less than 60%, and more preferably greater than 30% and less than 50%.

[0031] A plurality of granular bodies 30 for treating excrement (mainly urine) are laid in the upper space S1 of the main body 10. The plurality of granular bodies 30 are laid directly on the partition 20. Each granular body 30 is granular. Examples of the shape of the granular body include a sphere, a cylinder, and an ellipsoid. The particle size of each granular body 30 is, for example, not less than 5 mm and not more than 20 mm. Here, the particle size of the granular body 30 is defined as the diameter of the smallest sphere that can contain the granular body 30. When the animal toilet 1 is used, the granular body 30 directly receives excrement.

[0032] The granules 30 are hydrophobic. That is, the granules 30 do not absorb liquids such as urine at all, or absorb almost nothing even if they do. Unlike water-absorbent granules, the hydrophobic granules 30 do not adhere to each other and form lumps when wetted by urine.

[0033] In order to make the granules 30 hydrophobic, the liquid permeability measured by the following test needs to be 60% or more. First, put the granules 30 (sample) equivalent to 50g in a sieve with an inner diameter of 10cm and a mesh of 1mm. Set an empty beaker under the sieve. Then, for the sample, use a syringe with an inner diameter of 3cm and an inner diameter of 4mm at the front end of the tube (60ml syringe made by Terumo) to drip 30ml of water in 10 seconds. After standing for 1 minute, measure the amount of water in the beaker. The ratio of the measured amount of water to the amount of water dripped (30ml) is used as the liquid permeability. At this time, if the amount of water in the beaker is more than 18ml, the liquid permeability is more than 60%, so it can be said that the granules 30 are hydrophobic.

[0034] Each granular body 30 preferably has an organic substance as a main material. Here, the main material of the granular body 30 refers to the material that has the largest weight ratio in the granular body 30 among one or more materials constituting the granular body 30. Examples of the organic substance include paper, plants, plastics, or organic sludge. Each granular body 30 may be composed of only organic substances or may be composed of organic substances and inorganic substances.

[0035] Paper refers to a material mainly composed of paper pulp. As paper, for example, in addition to ordinary paper (paper powder), photographic paper, peeling paper, paper from fluff pulp, vinyl chloride wallpaper (paper produced during the manufacture or classification of vinyl chloride wallpaper), paper from gypsum board (paper produced during the manufacture or classification of gypsum board), or paper from sanitary products (paper produced during the manufacture or classification of sanitary products containing paper). As sanitary products containing paper, for example, diapers, sanitary napkins, urine-absorbing pads or sanitary paper (facial tissue, toilet paper, napkins, etc.) can be cited. As plants, for example, wood powder, sawdust or plant residues (tea dregs, bean dregs, etc.) can be used. As plastics, for example, in addition to ordinary plastics, aluminum vapor-deposited films, plastics from vinyl chloride wallpaper (plastics produced during the manufacture or classification of vinyl chloride wallpaper), or plastics from sanitary products (plastics produced during the manufacture or classification of sanitary products containing plastic) can be used. Examples of sanitary products containing plastics include diapers, sanitary napkins, urine-absorbing pads, and sanitary masks. Examples of organic sludges include papermaking sludge and pulp sludge. These materials may or may not be subjected to a hydrophobic treatment (water-repellent treatment).

[0036] The material constituting the granules 30 may be only one or may be two or more. In the former case, the material constituting the granules 30 is only the above-mentioned main material. In the latter case, the granules 30 are composed of a mixture of the main material and other materials. Examples of other materials include gypsum and sodium bicarbonate. By adding gypsum or sodium bicarbonate, it is easy to impart hydrophobicity to the granules 30. The proportion of gypsum or sodium bicarbonate is, for example, 5% by weight or more and less than 50% by weight relative to the entire granules 30.

[0037] The granules 30 can be manufactured, for example, by the following method. First, the granulating material (the material constituting the granules 30) is granulated by using a granulating device to form granules that become the granules 30. As the granulating device, for example, an extrusion granulator can be used. The granules can be subjected to a hydrophobic treatment as needed. The hydrophobic treatment can be performed, for example, by coating the surface of the granules with a hydrophobic agent (water repellent). In the case where the hydrophobic treatment is not performed, it is preferred to increase the pressure applied to the granulating material during granulation so as not to generate gaps in the granules as much as possible. This is because the gaps become paths for liquids such as urine to penetrate into the interior of the granules 30. Before granulation, the granulating material is subjected to pre-treatments such as pulverization, kneading, and water addition as needed. In addition, after granulation, post-treatments such as screening (granulation) and drying are performed as needed.

[0038] The absorbent sheet 40 is disposed in the lower space S2 of the main body 10. The absorbent sheet 40 absorbs urine that has passed through the through holes 22 of the partition 20. That is, urine that has passed through the through holes 22 is absorbed by the absorbent sheet 40 and stored in the lower space S2.

[0039] Figure 6 1 is a perspective view showing the pull-out portion 50. The pull-out portion 50 has a bottom plate 50a, a front plate 50b, a rear plate 50c, and a pair of side plates 50d. The size of the bottom plate 50a is substantially equal to the size of the bottom surface portion 10a of the main body 10. The front plate 50b has a shape and size substantially the same as the opening 12. A handle 52 is mounted on the front plate 50b. The pull-out portion 50 can be inserted and removed from the main body 10 through the opening 12. The water-absorbent sheet 40 is accommodated in the pull-out portion 50. That is, the water-absorbent sheet 40 is arranged in the main body 10 in a state of being accommodated in the pull-out portion 50. As a material for the pull-out portion 50, for example, plastic can be used.

[0040] When the animal litter box 1 is used, urine discharged into the main body 10 passes through the gaps between the granules 30 and then moves from the upper space S1 to the lower space S2 through the through holes 22 of the partition 20 . The urine moved to the lower space S2 is absorbed by the absorbent sheet 40 .

[0041] The effect of the animal litter box 1 will be described. In the animal litter box 1, a through hole 22a and a through hole 22b are provided in the partition 20. The through hole 22b is located at a position further outward than the through hole 22a. Moreover, the opening area of ​​the through hole 22b is smaller than the opening area of ​​the through hole 22a. By reducing the opening area of ​​the through hole 22b located at the relatively outer side in this way, it is difficult for the odor generated from the urine accumulated in the lower space S2 to leak into the upper space S1. This is because, in particular, the odor has a tendency to rise along the side surface 10b of the main body 10, and therefore it is easy to pass through the through hole 22b located at the relatively outer side compared to the through hole 22a located at the relatively inner side. On the other hand, by increasing the opening area of ​​the through hole 22a, urine can easily move smoothly from the upper space S1 to the lower space S2. Therefore, the animal litter box 1 suitable for suppressing the leakage of odor from the lower space S2 to the upper space S1 without hindering the smooth movement of urine from the upper space S1 to the lower space S2 is realized.

[0042] From the viewpoint of suppressing the leakage of odor without hindering the smooth movement of urine, the opening area of ​​the through hole 22b is preferably 1 / 2 or less, and more preferably 1 / 4 or less, of the opening area of ​​the through hole 22a. On the other hand, if this ratio is too small, the designable range of the opening area of ​​each through hole 22a, 22b becomes narrow, which may cause trouble in the manufacture of the animal toilet 1. From this viewpoint, the opening area of ​​the through hole 22b is preferably 1 / 8 or more of the opening area of ​​the through hole 22a.

[0043] The shape of the through hole 22b is similar to that of the through hole 22a in a plan view. By making the shapes of the through hole 22a and the through hole 22b similar in this way, the appearance of the partition 20 and the animal litter box 1 can be improved. However, the shape of the through hole 22b may not be similar to that of the through hole 22a in a plan view.

[0044] The partition 20 is in a flat plate shape. This makes it easy to mold the partition 20. This helps reduce the manufacturing cost of the partition 20 and the animal litter box 1.

[0045] Through hole 22a is provided in the central portion 20a of partition 20, and through hole 22b is provided in the peripheral portion 20b of partition 20. By neatly distinguishing the area where through hole 22a is arranged from the area where through hole 22b is arranged, the appearance of partition 20 and animal litter box 1 can be improved.

[0046] Reducing the area of ​​the central portion 20a provided with the through hole 22a is beneficial to suppressing the leakage of odor from the lower space S2 to the upper space S1. From this point of view, the area ratio of the central portion 20a in the partition 20 in the top view is preferably 60% or less, and more preferably 50% or less. On the other hand, if the area of ​​the central portion 20a is too small, it is difficult for urine to move smoothly from the upper space S1 to the lower space S2. From this point of view, the above area ratio is preferably 20% or more, and more preferably 30% or more.

[0047] Reducing the number of through holes 22a is beneficial to suppressing the leakage of odor from the lower space S2 to the upper space S1. From this point of view, the number of through holes 22a is preferably less than 70% of the total number of through holes 22a and through holes 22b, and more preferably less than 60%. On the other hand, if the number of through holes 22a is too small, it is difficult for urine to move smoothly from the upper space S1 to the lower space S2. From this point of view, the number of through holes 22a is preferably more than 30%, and more preferably more than 40%.

[0048] The granules 30 are hydrophobic. In this case, most of the urine excreted onto the granules 30 is not absorbed by the granules 30 but passes through the gaps between the granules 30. Thus, the urine can be quickly guided to the lower space S2.

[0049] When each granular body 30 is mainly composed of organic matter, a granular body 30 suitable for incineration can be obtained. This helps to facilitate the disposal of the used granular body 30. In particular, when each granular body 30 is composed only of organic matter, a granular body 30 more suitable for incineration can be obtained.

[0050] The main body 10 is formed of one container. In this case, compared with a case where the main body 10 is formed of a plurality of containers, the animal litter box 1 having the upper space S1 and the lower space S2 can be realized with a simple structure.

[0051] The partition part 20 is not fixed to the main body part 10. In this case, attachment and detachment of the partition part 20 to the main body part 10 become easy.

[0052] The partition part 20 is placed on the support part 14. Thus, the partition part 20 can be placed at a predetermined position in the main body 10 without being fixed to the main body 10.

[0053] The support portion 14 is provided on the entire inner periphery of the side surface portion 10b in a plan view, thereby easily preventing the partition portion 20 from falling into the lower space S2.

[0054] The partition 20 can be disposed in the main body 10 in a state where the entire periphery thereof is separated from the side surface 10b. By providing a margin between the partition 20 and the side surface 10b, the partition 20 can be smoothly attached to and detached from the main body 10.

[0055] The water-absorbent sheet 40 is disposed in the lower space S2. Thus, urine accumulated in the lower space S2 can be sealed in the water-absorbent sheet 40. Therefore, generation of bad odor from the urine can be alleviated.

[0056] A pull-out portion 50 is provided that can be inserted and pulled out from the main body 10. This makes it possible to easily replace the used water-absorbent sheet 40 with a new one.

[0057] However, cats, unlike other animals such as dogs, have the habit of hiding their excrement with granules after excretion. Therefore, the animal litter box 1 in which a plurality of granules 30 are laid in the upper space S1 is particularly suitable as a cat litter box.

[0058] The present invention is not limited to the above-mentioned embodiment, and various modifications are possible. In the above-mentioned embodiment, the case where two types of through holes 22 (through hole 22a and through hole 22b) with different opening areas are provided in the partition 20 is exemplified. However, for example, Figure 7 As shown, the partition 20 may also have three or more through holes 22 with different opening areas. In this figure, the partition 20 has a through hole 22c (third through hole) in addition to the through hole 22a and the through hole 22b. The through hole 22c is located at the same height as the through hole 22a and the through hole 22b and is located closer to the outside than the through hole 22b. The opening area of ​​the through hole 22c is smaller than the opening area of ​​the through hole 22b. In the top view, the shape of the through hole 22c is similar to the shape of the through hole 22a and the through hole 22b. The partition 20 has a plurality of through holes 22c.

[0059] The through holes 22c are provided in the peripheral portion 20c of the partition 20. All the through holes 22c are provided in the peripheral portion 20c. In this example, the peripheral portion 20b (first peripheral portion) is a portion obtained by removing the central portion 20a from the portion surrounded by the smallest imaginary rectangle R2 that can enclose all the through holes 22b in a top view. The long side and the short side of the rectangle R2 are parallel to the long side and the short side of the partition 20, respectively. The peripheral portion 20c (second peripheral portion) is a portion other than the central portion 20a and the peripheral portion 20b in the partition 20, and surrounds the entire peripheral portion 20b.

[0060] In the above embodiment, the through hole 22 is exemplified as having a circular planar shape. However, the through hole 22 may have any planar shape, and may be, for example, an ellipse or a polygon such as a rectangle.

[0061] In the above embodiment, the case where the pull-out portion 50 is provided is exemplified. However, it is not necessary to provide the pull-out portion 50. When the pull-out portion 50 is not provided, the water-absorbent sheet 40 is directly disposed on the bottom surface portion 10a. In this case, of course, the opening 12 is not provided on the side surface portion 10b.

[0062] In the above embodiment, the case where the water-absorbent sheet 40 is disposed on the main body 10 is exemplified. However, it is not necessary to dispose the water-absorbent sheet 40 on the main body 10. When the water-absorbent sheet 40 is not disposed, the pull-out portion 50 is not provided.

[0063] In the above embodiment, the case where the main body 10 is composed of one container is exemplified. Figure 8 As shown, the main body 10 can also be composed of multiple containers. In this figure, the main body 10 is composed of two containers (containers 62 and 64). Each container 62 and container 64 is in the shape of a box having a bottom portion and a side portion. Container 62 is stacked on container 64. The bottom portion of container 62 has a through hole 22, forming a flat partition 20. As a result, the internal space of container 62 and the internal space of container 64 become the upper space S1 and the lower space S2, respectively. In addition, the bottom portion of container 64 constitutes the bottom portion of the main body 10, and the side portion of container 62 and the side portion of container 64 constitute the side portion of the main body 10.

[0064] Description of symbols

[0065] 1: Animal toilet; 10: Main body; 10a: Bottom; 10b: Side; 12: Opening; 14: Support; 20: Partition; 20a: Central; 20b: Peripheral (first peripheral); 20c: Peripheral (second peripheral); 22: Through hole; 22a: Through hole (first through hole); 22b: Through hole (second through hole); 22c: Through hole (third through hole); 30: Granular body; 40: Water-absorbent sheet; 50: Pull-out; 52: Handle; 62: Container; 64: Container; S1: Upper space; S2: Lower space.

Claims

1. A toilet for animals, characterized in that: The animal toilet has: a main body portion that receives excreted urine; and a partition having a plurality of through holes for the urine to pass through, the partition dividing the internal space of the main body into an upper space and a lower space, The plurality of through holes include: a first through hole; as well as a second through hole located at the same height as the first through hole and further outward than the first through hole, An opening area of ​​the second through hole is smaller than an opening area of ​​the first through hole.

2. The animal litter box according to claim 1, wherein: The opening area of ​​the second through hole is less than or equal to 1 / 2 of the opening area of ​​the first through hole.

3. The animal litter box according to claim 2, wherein: The opening area of ​​the second through hole is less than or equal to 1 / 4 of the opening area of ​​the first through hole.

4. The animal litter box according to any one of claims 1 to 3, wherein: In a top view, a shape of the second through hole is similar to a shape of the first through hole.

5. The animal litter box according to any one of claims 1 to 3, wherein: The partition is in the shape of a flat plate.

6. The animal litter box according to any one of claims 1 to 3, wherein: The first through hole is provided in the central part of the partition, The second through hole is provided in a peripheral portion of the partition portion.

7. The animal litter box according to claim 6, wherein: In a plan view, an area ratio of the central portion to the partition portion is greater than or equal to 20% and less than or equal to 60%.

8. The animal litter box according to claim 7, wherein: The area ratio of the central portion is greater than or equal to 30% and less than or equal to 50%.

9. The animal litter box according to any one of claims 1 to 3, wherein: The partition includes a plurality of the first through holes and a plurality of the second through holes.

10. The animal litter box according to claim 9, wherein: The number of the first through holes is not less than 30% and not more than 70% of the total number of the first through holes and the second through holes.

11. The animal litter box according to claim 10, wherein: The number of the first through holes is not less than 40% and not more than 60% of the total number of the first through holes and the second through holes.

12. The animal litter box according to any one of claims 1 to 3, wherein: The plurality of through holes include a third through hole, the third through hole being located at the same height as the first through hole and the second through hole and being located outside the second through hole, An opening area of ​​the third through hole is smaller than an opening area of ​​the second through hole.

13. The animal litter box according to claim 12, wherein: In a plan view, a shape of the third through hole is similar to a shape of the first through hole and a shape of the second through hole.

14. The animal litter box according to claim 12, wherein: The partition portion has a plurality of the third through holes.

15. The animal litter box according to any one of claims 1 to 3, wherein: The animal litter box includes a plurality of hydrophobic granules laid in the upper space.

16. The animal litter box according to claim 15, wherein: Each of the granular bodies is mainly made of organic matter.

17. The animal litter box according to claim 16, wherein: Each of the granular bodies is composed only of organic matter.

18. The animal litter box according to any one of claims 1 to 3, wherein: The main body is composed of a container.

19. The animal litter box according to any one of claims 1 to 3, wherein: The partition portion is not fixed to the main body portion.

20. The animal litter box according to claim 19, wherein: The main body has a support portion protruding from a side surface of the main body toward the inside of the main body, The partition portion is placed on the support portion.

21. The animal litter box according to claim 20, wherein: The support portion is provided on the entire inner circumference of the side surface portion in a plan view.

22. The animal litter box according to any one of claims 1 to 3, wherein: The partition portion can be disposed in the main body portion in a state where the entire periphery of the partition portion is separated from the side surface portion of the main body portion.

23. The animal litter box according to any one of claims 1 to 3, wherein: The animal litter box includes a water-absorbent sheet disposed in the lower space and configured to absorb the urine.

24. The animal litter box according to claim 23, wherein: The animal toilet has a pull-out portion for storing the water-absorbent sheet. An opening is formed on the side surface of the main body. The pull-out portion can pass through the opening and be inserted and pulled out relative to the main body portion.

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