System toilet for pets

Abstract

The pet toilet system (1) includes an excrement container (2), a tray (5), a lower container (3), and a cover (4), which is configured to cover the top of the excrement container (2) and has an opening (420) for the pet to enter and exit. The cover (4) has: a pair of sidewall portions (421, 422) which are positioned opposite each other on both sides of the opening (420) in the width direction and extend in the front-rear direction; an upper wall portion (423) which is mounted on the pair of sidewall portions (421, 422) above the opening (420); a lower wall portion (470) which is located below the opening (420); and sidewall guide portions (451, 452) which extend rearward and inward in the width direction by folding back from the front end portion (429) of the pair of sidewall portions (421, 422), and the rear end portion (451a, 452a) of the sidewall guide portions (451, 452) defines a partial area of ​​the opening (420).

Description

Technical Field

[0001] One aspect of the present invention relates to a pet toilet system. Background Technology

[0002] A known pet toilet system comprises the following components: a waste container that holds litter and has a permeable bottom surface; a tray disposed below the waste container and holding an absorbent sheet that absorbs urine that has permeated through the litter; a lower container that holds the tray; and an upper container disposed above the waste container (see, for example, Patent Document 1). As such an upper container, a cover is provided to cover an opening above the waste container. An opening for a pet to enter and exit is formed on the front portion of the cover.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2021-78412 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] In a covered pet toilet system, the pet's entrance is limited to an opening on the front of the cover. When a pet enters the toilet through this opening, there is a risk of injury as the pet's body comes into contact with the side or top wall forming the opening. Furthermore, in covered pet toilets that are not part of a system, there are known examples of solidified litter with a non-permeable bottom surface. However, in such toilets, if a large amount of litter (e.g., enough to fill 5cm (40%) of the lower container) is not used, the pet's abdomen may collide with the lower wall when entering through the opening, resulting in injury. Even assuming only 5cm (40%) of litter is used, the height of the litter decreases as solidified litter is removed along with excreted urine, increasing the likelihood of abdominal impact during entry.

[0008] One aspect of the present invention is made in view of the above-mentioned actual situation, and relates to a pet toilet system that allows pets to enter and exit without injuring themselves.

[0009] Solution for solving the problem

[0010] One aspect of the present invention provides a pet toilet system comprising: a waste container for holding litter and having a permeable bottom surface; a tray disposed below the waste container and holding an absorbent sheet that absorbs liquid permeating through the bottom surface; a lower container for holding the tray; and an upper container disposed above the waste container and having an opening for a pet to enter and exit. The upper container comprises: a pair of sidewalls facing each other on both sides of the opening in the width direction and extending in a front-rear direction that is the depth direction of the upper container; an upper wall disposed above the opening, mounted on the pair of sidewalls; a lower wall disposed below the opening; and a sidewall guide extending rearward and inward in the width direction from the front ends of the pair of sidewalls, the rear end of the sidewall guide defining a partial area of ​​the opening.

[0011] In a pet toilet system according to one aspect of the present invention, an opening for a pet to enter and exit is formed in an upper container covering the excrement container. Furthermore, the upper container is provided with a sidewall guide that extends rearward and inward in the width direction from the front ends of a pair of sidewalls that fold back from their front ends. These sidewalls are opposite each other in the width direction of the opening and extend in a front-rear direction, with the rear end of the sidewall guide defining a partial area of ​​the opening. In such a pet toilet system, the opening is reached from the pair of sidewalls via the sidewall guide, allowing a pet entering the toilet from the sidewalls to move its body along the sidewall guide. For example, in a structure without sidewall guides, there is a possibility that when a pet enters the toilet from the sidewalls, its body may touch the sidewalls, causing injury. In this regard, in a pet toilet system according to one aspect of the present invention, since a sidewall guide extending rearward and inward in the width direction is provided, the pet can enter the toilet interior by making face contact with the sidewall guide, thereby effectively preventing injury to the pet. As described above, the pet toilet system according to one aspect of the present invention allows pets to enter and exit without injuring themselves. Furthermore, in the structure where the pet enters the toilet interior by making face contact with the sidewall guide, the pet can enter the toilet interior at an angle, thus eliminating the need for angle changes (switching) inside the toilet when the pet does not enter at an angle, providing a comfortable toilet space for the pet. Moreover, by having a sidewall guide, when the owner cleans the toilet interior, the owner's arm reaching into the toilet interior will not touch the sidewall, but will instead touch the sidewall guide by face contact, thus preventing injury to the owner's arm.

[0012] In the aforementioned pet toilet system, the sidewall guide section and the sidewall itself can be constructed from the same component. This structure allows for easy fabrication of the sidewall guide section. In other words, a toilet that will not injure the pet can be easily obtained.

[0013] In the aforementioned pet toilet system, the sidewall guide section and the sidewall section may be constructed as separate components. With such a structure, for example, the sidewall guide section, made of the necessary materials, can be installed in the necessary locations to match the characteristics of the pet. Furthermore, the sidewall guide section can be easily replaced.

[0014] In the aforementioned pet toilet system, the angle between the sidewall and the sidewall guide can also be an obtuse angle. This structure allows the pet to comfortably enter the toilet by moving its body along the sidewall guide.

[0015] In the aforementioned pet toilet system, the upper container may also include: an upper wall guide extending downward from the lower end of the upper wall; and a lower wall guide extending rearward from the upper end of the lower wall. The side wall guide, upper wall guide, and lower wall guide are continuously formed, with the rear end of the side wall guide, the lower end of the upper wall guide, and the rear end of the lower wall guide defining the area of ​​the opening. Thus, by providing the upper wall guide and lower wall guide, even for pets entering the toilet from the upper wall side or lower wall side (pets whose heads or tails touch the upper wall side or lower wall side), the pet's tail or the like will contact the upper wall guide or lower wall guide in a surface-to-surface manner, thereby appropriately reducing the possibility of injury to the pet.

[0016] In the aforementioned pet toilet system, the upper guide section can be positioned further back than the lower guide section in the front-to-back direction. This offsets the upper guide section, preventing the pet's body and tail from contacting the upper part of the opening (upper guide section) when the pet enters, thus more effectively reducing the risk of injury.

[0017] In the aforementioned pet toilet system, the bottom of the excrement container may be located below the upper part of the opening. With this structure, the bottom of the excrement container can be appropriately positioned in the area where the pet's urine falls when the pet excretes by exposing only its upper body through the opening.

[0018] In the aforementioned pet toilet system, the first imaginary surface may be positioned above the center of the opening in the vertical direction, facing the opening. This first imaginary surface is an imaginary surface located at the midpoint between the upper end of the opening and the rear end of the lower wall guide in the front-back direction, and is orthogonal to the front-back direction. With this structure, the area on the front side of the side wall guide defining the opening is larger, thus allowing for a larger area in the side wall guide for the pet to rest against its body. Furthermore, this makes it easier for the time when the pet's face and body come into contact with the side wall guide to coincide, preventing the pet's face from colliding with the body before the pet's body, as is common in conventional products. Instead, the face and body contact the guide at the same time, thus reducing the risk of pet injury.

[0019] In the aforementioned pet toilet system, the second imaginary surface may be positioned above and slightly above the center of the opening in the vertical direction. This second imaginary surface is an imaginary surface located at the midpoint between the upper end of the opening and the front end of the lower wall in the front-back direction, and is orthogonal to the front-back direction. With this structure, the area on the front side of the sidewall guide portion defining the opening is larger, thus allowing for a larger area in the sidewall guide portion for the pet to rest against its body. Furthermore, this makes it easier for the time when the pet's face and body come into contact with the sidewall guide portion to coincide, preventing the pet's face from colliding with the body before the pet's body, as is common in conventional products. Instead, the face and body contact the guide portion at the same time, thus reducing the risk of pet injury.

[0020] In the aforementioned pet toilet system, the sidewall may extend rearward from its front end, moving from a portion continuous with the lower wall towards a portion continuous with the upper wall. The front end of the sidewall may have a bend, with an angle of 30° or more and 90° or less from the lower wall to the bend, and an angle of 60° or more and 90° or less from the bend to the upper wall. By ensuring the angle of the sidewall to the bend is 30° or more, a pet can be appropriately guided to enter the toilet along the sidewall guide. Furthermore, by ensuring the angle of the sidewall is 90° or less, a pet can easily enter the toilet from the side of the sidewall.

[0021] In the aforementioned pet toilet system, the upper end of the opening may be located further back than the midpoint between the center of the tray and the front end of the lower wall in the front-back direction. This structure, with the upper end of the opening positioned sufficiently at the rear, allows the pet owner to detect dirt in the upper container early, even without squatting. Furthermore, by making the opening larger, the owner can easily reach into the opening to clean the upper container. Additionally, with this structure, the front area of ​​the side wall guide portion defining the opening is larger, thus allowing for a larger area in the side wall guide portion for the pet to rest against its body. This makes it easier for the pet to bring its face and body into contact with the side wall guide portion at the same time, preventing the pet's face from colliding with the body before the pet's body, as is common in conventional products. Instead, the face and body contact the guide portion at the same time, thus reducing the risk of pet injury.

[0022] In the aforementioned pet toilet system, the width of the lower wall guide portion extending towards the opening can be larger than the width of the side wall guide portion extending towards the opening, and the width of the side wall guide portion can be larger than the width of the upper wall guide portion extending towards the opening. This creates a larger area where the pet's weight is more likely to be supported when entering, thus guiding the pet appropriately and mitigating the risk of injury. Specifically, by making the lower wall guide width larger than the upper wall guide width, the pet can more easily and stably place its paws on the lower wall guide portion when entering, while making the upper wall guide portion narrower helps to prevent head and tail collisions.

[0023] In the aforementioned pet toilet system, at least one of the side wall guide width, lower wall guide width, and upper wall guide width may not be constant. This structure allows the width to be adjusted according to the area so that the pet can easily fit against its body, thus making it easier for the pet to enter the toilet.

[0024] In the aforementioned pet toilet system, the angle formed by the upper wall and the upper wall guide can also be an obtuse angle. This structure allows for the proper guidance of the pet towards the opening using the upper wall guide. Furthermore, when the pet enters the toilet, for example, when its tail makes contact, it makes surface contact with the upper wall guide rather than point contact, thus appropriately reducing the risk of injury to the pet.

[0025] In the aforementioned pet toilet system, the upper container may also have a protrusion at the outer end of its lower wall in the width direction. With this structure, when a pet enters the toilet from the left or right (outer edge in the width direction) of the opening, the protrusion can be used as a footrest for the pet, making it easier for the pet to enter the toilet.

[0026] In the aforementioned pet toilet system, the upper container may be configured to include: a fixed cover disposed at the rear; a movable cover disposed at the front; and a pair of connecting portions that rotatably connect the movable cover to the fixed cover. The fixed cover has: a pair of connecting portions extending forward from the portion where the pair of connecting portions are located; and a lower wall first portion extending in the width direction such that the front ends of the pair of connecting portions are connected. The movable cover has a lower wall second portion disposed in front of the lower wall first portion. The lower wall portion is formed by arranging a lower wall guide portion that overlaps with the lower wall first portion and arranging the lower wall second portion in front of the lower wall first portion. In this way, the lower wall portion has a double-layer structure, thereby enabling stable support for the pet and making it easier for the pet to enter the toilet.

[0027] In the aforementioned pet toilet system, the first part of the lower wall may have an area that, when viewed from above with the first part of the lower wall overlapping the lower wall guide, extends further toward the opening than the lower wall guide. This allows the first part of the lower wall to properly support the lower wall guide when the pet applies its weight, preventing the lower wall guide from flexing and causing the pet's feet to slip. Furthermore, by supporting the lower wall guide with the first part of the lower wall, the pet can place its feet on the lower wall guide and defecate stably when facing the entrance.

[0028] The effects of the invention

[0029] According to one aspect of the present invention, a pet toilet system allows pets to enter and exit without injuring themselves. Attached Figure Description

[0030] Figure 1 This is a perspective view of the pet toilet system in the closed state according to this embodiment.

[0031] Figure 2 This is a perspective view of the pet toilet system of this embodiment in its open state.

[0032] Figure 3 yes Figure 1 The diagram shown is an exploded 3D view of a pet toilet system.

[0033] Figure 4 yes Figure 1The front view of the pet toilet system shown.

[0034] Figure 5 yes Figure 1 The image shows a side view of a pet toilet system.

[0035] Figure 6 yes Figure 1 The image shows a top view of a pet toilet system.

[0036] Figure 7 This is the front view of a modified pet toilet system. Detailed Implementation

[0037] Hereinafter, a pet toilet system according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the various drawings, the same or equivalent parts are labeled with the same reference numerals, and repeated descriptions are omitted. Furthermore, the drawings are schematic and may differ from reality in terms of scale, etc.

[0038] Figure 1 This is a perspective view of the pet toilet system 1 in the closed state of this embodiment (details will be explained later). Figure 2 This is a perspective view of the pet toilet system 1 of this embodiment in its open state (details will be explained later). Figure 3 yes Figure 1 The image shows an exploded perspective view of the pet toilet system 1. The pet toilet system 1 of this embodiment is, for example, a toilet system for the excretion of a cat. The pet toilet system of the present invention can also be used for the excretion of pets other than cats.

[0039] like Figures 1-3 As shown, the pet toilet system 1 includes an excrement container 2, a lower container 3, a cover 4 (upper container), and a tray 5. Figure 1 The "closed state" shown refers to the state where cover 4 is closed. Figure 2 The "open state" shown refers to the state where cover 4 is open (details will be explained later).

[0040] The following explanation uses the following definitions: the vertical direction of the pet toilet system 1 is defined as "vertical direction"; the depth direction, which is the length direction, is defined as "front-back direction"; and the direction orthogonal to the vertical and front-back directions is defined as "width direction". In the "vertical direction", the direction viewed from the lower container 3 towards the side of the cover 4 is defined as "up" and the direction viewed from the cover 4 towards the side of the lower container 3 is defined as "down". Similarly, in the "front-back direction", the direction viewed from the lower container 3 towards the side of the cover 4 is defined as "down". Figure 1 The fixed cover 41 (details to be described later) of the cover 4 shown is oriented "forward" and the movable cover 42 (details to be described later) is oriented "forward" and is self- Figure 1The direction observed from the movable cover 42 on the side of the fixed cover 41 is described as "rear".

[0041] The excrement container 2 is a container for holding toilet litter (not shown). The excrement container 2 has a wall surface 22 and a permeable bottom surface 21. Toilet litter is granular material capable of absorbing or permeating liquids such as urine. Known types of toilet litter can be used, such as bentonite that can cover feces and absorb liquids, waterproof-coated wood or paper, or toilet litter shaped into approximately spherical shapes with deodorizing properties, such as zeolite, silica gel, or minerals, with diameters ranging from a few millimeters to a few centimeters. Furthermore, when using solidified litter as toilet litter, there is a risk of clogging the permeable bottom surface 21; therefore, it is preferable not to use solidified litter in this pet toilet system 1. The toilet litter is disposed on the bottom surface 21.

[0042] The bottom surface 21 is a plate-like component with lattice strips formed in a bamboo curtain shape and regular gaps between the strips. The bottom surface 21 is generally rectangular in shape when viewed from above. The wall surface 22 is formed by rising upwards from the periphery of the bottom surface 21. That is, the wall surface 22 is formed by rising upwards from both ends in the front-to-back direction and both ends in the width direction of the bottom surface 21. Furthermore, the bottom surface 21 can be any shape other than rectangular when viewed from above, as long as it can hold toilet litter. Pet excrement passes through the toilet litter and through the gaps in the bottom surface 21 formed by the bamboo curtain-like lattice strips, falling into the lower container 3 (more specifically, the tray 5 held in the lower container 3) located below the excrement container 2. The excrement container 2 is made of resin such as plastic, but is not limited to this.

[0043] A tray 5 is positioned below the excrement container 2 and houses an absorbent sheet (not shown) that absorbs liquid (excrement) that has permeated through the bottom surface 21. A tray handle 51 is formed on the front side of the tray 5, allowing a user to grasp it and pull the tray 5 forward. The tray handle 51 may also be formed not only on the front side but also on the rear side of the tray 5. In this case, the tray 5 has a symmetrical shape. By making the tray 5 symmetrical and forming tray handles 51 on both the front and rear sides, the tray 5 can be pulled out using the tray handles 51, for example, even if the front and rear of the tray 5 are reversed. After the liquid-absorbing area in the absorbent sheet has been determined to a certain extent, the front and rear of the tray 5 are reversed, thereby changing the direction of the absorbent sheet and absorbing liquid in an area different from the area where liquid has already been absorbed. In this way, by reversing the front and rear of the tray 5, the absorbent sheet can be used to its maximum efficiency. The tray 5 is shaped to be slightly smaller than the lower container 3 so that it can be stored inside the lower container 3 and can swing. In this embodiment, the tray 5 is pulled out horizontally, but it is not limited to this; for example, it can also be pulled out diagonally upwards.

[0044] The lower container 3 holds the tray 5. The lower container 3 stores the tray 5 inside in a way that allows it to be pulled out in a swingable manner. Figure 3 As shown, the lower container 3 is configured to include a bottom surface 31 and walls 32, 33, 34, and 35. The bottom surface 31 is the portion opposite to the mounting surface of the pet toilet system 1. The bottom surface 31 is rectangular in shape when viewed from above. Alternatively, the central portion of the bottom surface 31 may be formed as an opening.

[0045] Wall 32 is formed by rising upwards from the front end of the bottom portion 31. An opening 320 for pulling out the tray 5 is formed in wall 32. Wall 33 is formed by rising upwards from the rear end of the bottom portion 31. Walls 34 and 35 are formed by rising upwards from both ends of the bottom portion 31 in the width direction. Walls 32, 33, 34, and 35 are formed continuously, surrounding the entire circumference of the bottom portion 31. The wall 22 of the excretion container 2 is fitted into the upper ends of walls 32, 33, 34, and 35. A fixed cover 41 (details will be described later) is installed covering the upper ends of walls 32, 33, 34, and 35. Connecting portions 300 and 300 (details will be described later) are provided at the center and upper end of walls 34 and 35 in the front-rear direction, respectively, for connection with hooks 419 of the fixed cover 41.

[0046] The cover 4 is configured to cover the top of the excrement container 2 and has an opening 420 for the pet to enter and exit. The cover 4 comprises a fixed cover 41, a movable cover 42, and a pair of connecting parts 43, 43. The fixed cover 41 is positioned above the rear side of the excrement container 2. The movable cover 42... Figure 1 In the closed state shown, it is positioned above the front side of the covering discharge container 2.

[0047] The fixed cover 41 and the movable cover 42 have overlapping portions 45 near the center of the discharge container 2 in the front-rear direction (see reference). Figure 1 A pair of connecting portions 43, 43 are disposed at the lower end of the overlapping portion 45, which rotatably connect the movable cover 42 to the fixed cover 41. The pair of connecting portions 43, 43 extend from both ends in the width direction through the movable cover 42 and the fixed cover 41, thereby rotatably connecting the movable cover 42 to the fixed cover 41. Furthermore, the movable cover 42 is not limited to rotation, but may also be in a shape that allows it to slide while in contact with the fixed cover 41.

[0048] The closed state refers to, for example, Figure 1 The movable cover 42 shown is positioned above and covering the front side of the excrement container. The open state refers to... Figure 2 The movable cover 42 is shown in the rear (towards the fixed cover 41) configuration. The movable cover 42 can be rotated about a pair of connecting portions 43, 43, allowing it to be switched between an open and closed state. Furthermore, since the movable cover 42 rotates on the outer surface of the fixed cover 41, the fixed cover 41 is formed to be slightly smaller than the movable cover 42.

[0049] like Figure 3 As shown, the fixed cover 41 is configured to include a mounting portion 410 and a cover portion 418. The mounting portion 410 is the portion that is mounted on the upper end of the walls 32, 33, 34, and 35 of the lower container 3. The mounting portion 410 is configured to include a rear mounting portion 411, a lower wall first portion 413, and a pair of connecting portions 412, 412.

[0050] The rear mounting portion 411 is the portion installed at the upper end of the rear part of the wall surface 34, 35 and the upper end of the wall surface 33. The rear part of the wall surface 34, 35 refers to the portion that is, for example, further back than the center in the front-rear direction. The front end of the portion of the rear mounting portion 411 on the wall surface 34 side and the portion on the wall surface 35 side is positioned approximately in the front-rear direction in the same direction as the portion provided with a pair of connecting portions 43, 43. The front end of the portion of the rear mounting portion 411 installed on the wall surface 34, 35 is provided with downwardly extending hooks 419, 419. The fixing cover 41 is fixed to the lower container 3 by connecting the hooks 419, 419 to the connecting portions 300 of the wall surface 34, 35 respectively.

[0051] A pair of connecting parts 412, 412 extend forward from the front end of the portion of the rear mounting part 411 that is mounted on the wall surface 34, 35 (i.e., the portion where a pair of connecting parts 43, 43 are provided in the front-rear direction). The pair of connecting parts 412, 412 are mounted on the upper end of the front portion of the wall surface 34, 35.

[0052] The lower wall first part 413 extends in the width direction to connect the front ends of a pair of connecting parts 412, 412. The lower wall first part 413 is mounted on the upper end of the wall surface 32. The lower wall first part 413 is configured to include: a first part 414, which extends vertically and in the width direction along the front surface portion of the wall surface 32; and a second part 415, which extends rearward from the upper end of the first part 414 and in the width direction. In the closed state, as Figure 1 As shown, a lower wall guide portion 454 of the movable cover 42 is arranged to overlap with the first lower wall portion 413 (details will be described later). In detail, the lower wall guide portion 454 is arranged to overlap with the second portion 415 of the first lower wall portion 413, and a second lower wall portion 424 of the movable cover 42 is arranged in front of the first portion 414 of the first lower wall portion 413 (details will be described later).

[0053] Return to Figure 3 The cover 418 is a cover that covers the upper rear side of the excrement container 2. The cover 418 rises upward from approximately the entire area of ​​the rear mounting portion 411, covering the upper rear side of the excrement container 2. The upper surface of the cover 418 is formed by a generally arcuate surface that is curved from the front end side to the rear end side. Through holes 418x are formed at the front ends of both sides of the cover 418 for a pair of connecting portions 43, 43 to pass through. The position of the through holes 418x in the front-rear direction is approximately the same as that of the hook 419.

[0054] The movable cover 42 switches between closed and closed states by rotating about a pair of connecting parts 43, 43 (see reference). Figure 1 ) and open status (refer to) Figure 2 The structure of ) is also referenced. Figures 4-6 The detailed structure of the movable cover 42 is explained. Figure 4 This is the main view of the pet toilet system 1 when it is closed. Figure 5 This is a side view of the pet toilet system 1 in its closed state. Figure 6 This is a top view of the pet toilet system 1 in its closed state.

[0055] An opening 420 for a pet to enter and exit is formed on the front of the movable cover 42. The movable cover 42 is configured to include a pair of side wall portions 421 and 422, an upper wall portion 423, a lower wall portion 424, a protrusion 425, side wall guide portions 451 and 452, an upper wall guide portion 453, and a lower wall guide portion 454. The above-described structures included in the movable cover 42 are integrally formed from the same component.

[0056] A pair of sidewall portions 421 and 422 are provided to be opposite each other at both ends in the width direction of the opening 420 and extend in the front-rear direction. For example... Figure 4 and Figure 6 As shown, the sidewall portions 421 and 422 are formed by curved surfaces that extend outward in the width direction from their front end side toward their rear end side. A through hole 428 is formed at the rear end and lower end of the sidewall portions 421 and 422 for a pair of connecting portions 43 to pass through (see reference). Figure 3 ).

[0057] like Figure 5 As shown, the side wall portions 421 and 422 extend rearward at their front ends 429 from the portion continuous with the lower wall portion 424 toward the portion continuous with the upper wall portion 423. Figure 5As shown, the front end portion 429 of the sidewall portions 421 and 422 has a bending change point IP. The angle α from the second lower wall portion 424 to the bending change point IP is, for example, 30° or more and 90° or less, or for example, 60° to 80°, or for example, 60°. Furthermore, the angle β from the bending change point IP to the upper wall portion 423 is, for example, 60° or more and 90° or less, or for example, 60°. Additionally, the position of the bending change point IP is preferably set to correspond to the two central regions when the opening 420 is divided into four equal parts in the vertical direction, and more preferably to correspond to the upper region of the two central regions. If the bending change point IP is set at a position that is too low, there is a risk that the guide portion, which becomes part of the sidewall, will be a shorter structure at the lower position, thus failing to fully perform its guiding function. That is, because the guide portion is located at a low position, there is a risk that the pet may not be able to properly touch the guide portion. Furthermore, if the bending point IP is positioned too high, the side walls 421 and 422 at the entrance do not tilt backward, posing a risk that pets may have difficulty entering the toilet. To address this, by positioning the bending point IP at the center of the vertical direction, a structure can be created that appropriately guides pets and facilitates their entry.

[0058] The upper wall portion 423 is the portion provided above the opening 420, mounted on a pair of side wall portions 421 and 422. For example... Figure 5 As shown, the upper wall portion 423 is formed by a generally circular arc surface that is curved from its front end side toward its rear end side.

[0059] The second lower wall portion 424 is provided below the opening 420. The second lower wall portion 424 is a portion that extends vertically and horizontally along the front surface of the first lower wall portion 413 in the closed state. The second lower wall portion 424 is continuous with a pair of side wall portions 421 and 422 at both ends in the width direction. As described above, in the closed state, the second lower wall portion 424 is positioned in front of the first lower wall portion 413. By arranging the second lower wall portion 424 in front of the first lower wall portion 413, the lower wall portion 470 is formed using the first lower wall portion 413 and the second lower wall portion 424.

[0060] like Figure 3As shown, the protrusion 425 is a portion provided on the outer edge of the second lower wall portion 424 constituting the lower wall portion 470 in the width direction and protruding outward toward the outside of the second lower wall portion 424. More specifically, the protrusion 425 is provided at the lower end of the portion of the second lower wall portion 424 that is continuous with a pair of side wall portions 421, 422, and protrudes outward toward the outside of the second lower wall portion 424 and the side wall portion 421 (or side wall portion 422). The protrusion 425 is designed to be held by the user, for example, when the movable cover 42 rotates during the switching from a closed state to an open state. That is, the user lifts the protrusion 425, thereby rotating the movable cover 42 and switching from a closed state to an open state. Alternatively, the protrusion 425 can also be used as a footrest for a pet to step on when a pet enters the toilet from the left or right (outer edge in the width direction) of the opening 420. Furthermore, when the movable cover 42 is kept in the open state, it can be used as a system toilet with a large opening. In this case, it becomes a suitable form for cats who want their vision blocked while urinating but want to feel open when entering. In addition, even if it was previously used in the closed state, it can be used in the open state to achieve the best form for obese cats, old cats, disabled cats, etc., depending on the cat's condition.

[0061] As described above, the front end portion 429 of the side wall portions 421 and 422 extends obliquely rearward from the portion continuous with the second lower wall portion 424 toward the portion continuous with the upper wall portion 423 (see reference). Figure 5 ), therefore, as Figure 1 As shown, the opening 420 is formed such that the higher the end side, the further back it is located. For example... Figure 6 As shown, the bottom part 21 of the excretion container 2 is located below the upper part 420a of the opening 420. Alternatively, the tray 5 (specifically, the recessed portion of the tray 5 other than the tray handle 51) may be located below the upper part 420a of the opening 420, and the absorbent sheet and urination component (urination tray, etc.) may be located below the upper part 420a of the opening 420. Furthermore, as... Figure 6 As shown, the upper end portion 420a of the opening 420 is located behind the midpoint CP of the center position TC of the tray 5 and the front end portion 471 of the lower wall portion 470 in the front-rear direction.

[0062] like Figure 1 As shown, the sidewall guide portions 451 and 452 are portions that extend rearward and inward in the width direction, folding back from the front end portion 429 of a pair of sidewall portions 421 and 422. That is, the sidewall guide portion 451 extends folded back from the front end portion 429 of the sidewall portion 421, and the sidewall guide portion 452 extends folded back from the front end portion 429 of the sidewall portion 422. Figure 4As shown, the rear end portion 451a of the sidewall guide portion 451 and the rear end portion 452a of the sidewall guide portion 452 define a partial area of ​​the opening 420, specifically, the area defined at both ends of the opening 420 in the width direction. That is, the entire area enclosed by the rear end portion 451a of the sidewall guide portion 451 and the rear end portion 452a of the sidewall guide portion 452 constitutes the area of ​​the opening 420. The angles formed by the sidewall portion 421 and the sidewall guide portion 451, and the angles formed by the sidewall portion 422 and the sidewall guide portion 452, are both obtuse angles, for example, approximately 100° to 125°. The width of the sidewall guide portions 451 and 452 (the length of the sidewall guide portions 451 and 452 in the direction of extension toward the opening 420) is not constant; for example, it may be larger on the side closer to the lower wall guide portion 454 and smaller on the side closer to the upper wall guide portion 453. The width of the side wall guide portions 451 and 452 is, for example, about 27mm to 43mm.

[0063] The upper wall guide portion 453 extends downward from the lower end portion 423a of the upper wall portion 423. The upper wall guide portion 453 is continuously formed with the side wall guide portions 451 and 452. For example... Figure 4 As shown, the lower end portion 453a of the upper wall guide portion 453 defines a partial area of ​​the opening 420, specifically the area on the upper side of the opening 420. The upper wall guide portion 453 extends downward at an angle different from the curvature of the upper wall portion 423, with the lower end portion 423a of the upper wall portion 423 as the point of curvature change. The angle between the upper wall portion 423 and the upper wall guide portion 453 is an obtuse angle, for example, about 100° to 125°. The width of the upper wall guide portion 453 (the length of the upper wall guide portion 453 in the direction of extension toward the opening 420) is not constant; for example, it may be smaller in the center of the width direction and larger at both ends of the width direction. The width of the upper wall guide portion 453 is, for example, about 25mm to 27mm. Figure 6 As shown, the upper wall guide portion 453 is located further back than the lower wall guide portion 454 in the front-back direction.

[0064] like Figure 6As shown, the lower wall guide portion 454 is a portion extending rearward from the upper end 424a of the second lower wall portion 424 constituting the lower wall portion 470. The lower wall guide portion 454 extends rearward without inclination (i.e., approximately horizontally) toward the opening portion 420. Therefore, pets entering through the opening portion 420 can easily place their feet on the lower wall guide portion 454, thus facilitating entry into the toilet. Furthermore, if, for example, the lower wall guide portion 454 were inclined downward in the direction separating from the opening portion 420, there is a risk that sand falling from the pet's feet onto the lower wall guide portion 454 could roll onto the floor outside the toilet. However, by making the lower wall guide portion 454 approximately horizontal as described above, this can be prevented. Additionally, when the owner removes the cover 4 from the lower container 3 and holds it in an inverted position, by making the lower wall guide portion 454 approximately horizontal, the possibility of urine droplets and dust adhering to the inside of the cover 4 falling onto the floor can be prevented.

[0065] The lower wall guide portion 454 extends linearly along the width direction and is continuously formed with the side wall guide portions 451 and 452. For example... Figure 6 As shown, the rear end portion 454a of the lower wall guide portion 454 defines a partial area of ​​the opening 420, specifically the area on the lower side of the opening 420. The angle formed by the second lower wall portion 424 and the lower wall guide portion 454 is an obtuse angle, for example, approximately 95° to 100°. Alternatively, the angle formed by the second lower wall portion 424 and the lower wall guide portion 454 may not be obtuse. The width of the lower wall guide portion 454 (the length of the lower wall guide portion 454 in the direction of extension toward the opening 420) is not constant; for example, it may be larger in the central part of the width direction and smaller at both ends. The width of the lower wall guide portion 454 is, for example, approximately 43mm to 50mm. Thus, the width of the lower wall guide portion 454 may be larger than the width of the side wall guide portions 451 and 452, and the width of the side wall guide portions 451 and 452 may be larger than the width of the upper wall guide portion 453.

[0066] like Figure 6 As shown, the lower wall guide portion 454, in the closed state, is positioned above the second portion 415, overlapping with the second portion 415 of the first portion 413 of the lower wall. Furthermore, in Figure 6 In the top view shown, the second part 415 of the first part 413 of the lower wall has a region 415a that extends beyond the lower wall guide 454 toward the opening 420 when it overlaps with the lower wall guide 454 (located below the lower wall guide 454). This extended region 415a is provided at both ends of the second part 415 in the width direction.

[0067] As described above, the side wall guide portions 451, 452, the upper wall guide portion 453, and the lower wall guide portion 454 are formed continuously, as shown below. Figure 4As shown, the area defining the opening 420 is defined by the rear ends 451a and 452a of the side wall guides 451 and 452, the lower end 453a of the upper wall guide 453, and the rear end 454a of the lower wall guide 454. That is, the area surrounded by the rear ends 451a and 452a of the side wall guides 451 and 452, the lower end 453a of the upper wall guide 453, and the rear end 454a of the lower wall guide 454 is the opening 420.

[0068] As described above, the upper wall guide portion 453 is located further rearward than the lower wall guide portion 454 in the front-rear direction (see reference). Figure 6 Furthermore, the front end portion 429 of the side wall guide portions 451 and 452, which extend in a manner connecting the lower wall guide portion 454 and the upper wall guide portion 453, has a relatively large area on the front side (see reference). Figure 5 The positional relationships of the parts representing the above situations will be explained. For example, such as... Figure 6 As shown, consider the first imaginary surface 801, which is an imaginary surface passing through the midpoint in the front-rear direction between the upper end portion 420a of the opening 420 and the rear end portion 454a of the lower wall guide portion 454, and is orthogonal to the front-rear direction. This first imaginary surface 801 faces the opening 420 at a position slightly above the center in the vertical direction within the opening 420. That is, as... Figure 4 As shown, the first contact portion 801x, where the first imaginary surface 801 and the opening 420 face each other (contact), is located above the center line 900 passing through the center in the vertical direction of the opening 420. Additionally, for example, as... Figure 6 As shown, consider the second imaginary surface 802, which is an imaginary surface passing through the midpoint in the front-rear direction between the upper end portion 420a of the opening 420 and the front end portion 471 of the lower wall portion 470, and is orthogonal to the front-rear direction. This second imaginary surface 802 faces the opening 420 at a position slightly above the center in the vertical direction within the opening 420. That is, as... Figure 4 As shown, the second contact portion 802x, which faces (contacts) the second imaginary surface 802 and the opening 420, is located above the center line 900 in the vertical direction through the opening 420.

[0069] Next, the effects of the pet toilet system 1 in this embodiment will be explained.

[0070] The pet toilet system 1 of this embodiment includes: a waste container 2 that holds toilet litter and has a permeable bottom surface 21; a tray 5 disposed below the waste container 2 and holding an absorbent sheet that absorbs liquid that permeates through the bottom surface 21; a lower container 3 that holds the tray 5; and a cover 4 disposed to cover the top of the waste container 2 and having an opening 420 for the pet to enter and exit. The cover 4 has a pair of sidewalls 421 and 422, which are positioned on the width of the opening 420. The two sides are opposite each other in the degree direction and extend in the front-back direction; the upper wall portion 423 is provided above the opening portion 420 in such a way as to be mounted on a pair of side wall portions 421, 422; the lower wall portion 470 is provided below the opening portion 420; and the side wall guide portions 451, 452 extend rearward and inward in the width direction in such a way as to be folded back from the front end portion 429 of the pair of side wall portions 421, 422, and the rear end portions 451a, 452a of the side wall guide portions 451, 452 define a part of the opening portion 420.

[0071] In the pet toilet system 1 of this embodiment, an opening 420 for a pet to enter and exit is formed in the cover 4 above the excrement container 2. Furthermore, side wall guides 451 and 452 are provided in the cover 4. These side wall guides 451 and 452 extend rearward and inward in the width direction from the front ends 429 of a pair of side wall portions 421 and 422. The pair of side wall portions 421 and 422 are opposite each other in the width direction of the opening 420 and extend in the front-rear direction. The rear ends 451a and 452a of the side wall guides 451 and 452 define a partial area of ​​the opening 420. In this pet toilet system 1, the structure allows the pet to reach the opening 420 from the pair of side wall portions 421 and 422 via the side wall guides 451 and 452. Therefore, a pet entering the toilet from the side wall portions 421 and 422 enters the toilet along the side wall guides 451 and 452. For example, in structures without side wall guides 451 and 452, there is a possibility that when a pet enters the toilet from the side wall, its body may come into contact with the side wall, causing injury. In this respect, in the pet toilet system 1 of this embodiment, since side wall guides 451 and 452 are provided extending rearward and inward in the width direction, the pet can enter the toilet with its body in face-to-face contact along the side wall guides 451 and 452, effectively preventing injury. As described above, the pet toilet system 1 according to this embodiment allows pets to enter and exit without injuring themselves. Furthermore, in the structure where the pet enters the toilet with its body along the side wall guides 451 and 452, the pet can enter the toilet at an angle, thus eliminating the need for angle changes (switching) inside the toilet when the pet does not enter at an angle, providing a comfortable toilet space for the pet. Furthermore, by having side wall guides 451 and 452, when the owner cleans the inside of the toilet, the owner's arm that reaches into the toilet will not touch the side wall 421 and 422, but will touch the side wall guides 451 and 452 in a face-to-face manner, thus preventing the owner's arm from being injured.

[0072] In the aforementioned pet toilet system 1, the side wall guides 451 and 452 and the side wall portions 421 and 422 may be constructed from the same component. With this structure, the side wall guides 451 and 452 can be easily formed. That is, a toilet that will not injure the pet can be easily obtained.

[0073] In the aforementioned pet toilet system 1, the angle formed by the side wall portions 421, 422 and the side wall guide portions 451, 452 may also be an obtuse angle. With this structure, it is possible to appropriately enable a pet to enter the toilet by moving its body along the side wall guide portions 451, 452.

[0074] In the aforementioned pet toilet system 1, the cover 4 may also include: an upper wall guide portion 453 extending downward from the lower end portion 423a of the upper wall portion 423; and a lower wall guide portion 454 extending rearward from the upper end portion 424a of the second lower wall portion 424 constituting the lower wall portion 470. The side wall guide portions 451, 452, the upper wall guide portion 453, and the lower wall guide portion 454 are continuously formed, and the area of ​​the opening 420 is defined by the rear ends 451a, 452a of the side wall guide portions 451, 452, the lower end portion 453a of the upper wall guide portion 453, and the rear end portion 454a of the lower wall guide portion 454. In this way, by providing the upper wall guide portion 453 and the lower wall guide portion 454, even for pets entering the toilet from the side of the upper wall portion 423 or the side of the second lower wall portion 424 (pets whose heads or tails touch the upper wall portion 423 or the second lower wall portion 424), the pet's tail or the like will touch the upper wall guide portion 453 or the lower wall guide portion 454 in a face-to-face manner, thereby appropriately suppressing the possibility of the pet being injured.

[0075] In the aforementioned pet toilet system 1, the upper wall guide 453 may be positioned further back than the lower wall guide 454 in the front-to-back direction. This shifts the upper wall guide 453 rearward, preventing the pet's body and tail from contacting the upper wall guide 453 above the opening 420 when the pet enters through the opening 420, thus more effectively reducing the risk of injury to the pet.

[0076] In the pet toilet system 1 described above, the bottom part 21 of the excrement container 2 may be located below the upper end 420a of the opening 420. With this structure, the bottom part 21 of the excrement container 2 can be appropriately positioned in the area where the pet's urine falls when the pet excretes by exposing only its upper body to the outside through the opening 420.

[0077] In the aforementioned pet toilet system 1, the first imaginary surface 801 may be positioned above the center of the opening 420 in the vertical direction, facing the opening 420. This first imaginary surface 801 is an imaginary surface that passes through the midpoint between the upper end 420a of the opening 420 and the rear end 454a of the lower wall guide 454 in the front-back direction, and is orthogonal to the front-back direction. With this structure, the front area of ​​the side wall guides 451 and 452 defining the opening 420 is larger, thus allowing for a larger area in the side wall guides 451 and 452 for the pet to rest against its body. Furthermore, the time at which the pet presses its face against the side wall guides 451 and 452 and the time at which it presses its body against the side wall guides 451 and 452 are more likely to coincide. Therefore, unlike conventional products where the pet's face collides before its body, the face and body contact the guides at the same time, thus reducing the risk of pet injury.

[0078] In the aforementioned pet toilet system 1, the second imaginary surface 802 may be positioned above the center of the opening 420 in the vertical direction, facing the opening 420. This second imaginary surface 802 is an imaginary surface that passes through the midpoint between the upper end 420a of the opening 420 and the front end 471 of the lower wall 470 in the front-back direction, and is orthogonal to the front-back direction. With this structure, the front area of ​​the side wall guides 451 and 452 defining the opening 420 is larger, thus allowing for a larger area in the side wall guides 451 and 452 for the pet to rest against its body. Furthermore, the time at which the pet presses its face against the side wall guides 451 and 452 and the time at which it presses its body against the side wall guides 451 and 452 are more likely to coincide. Therefore, unlike conventional products where the pet's face collides before its body, the face and body contact the guides at the same time, thus reducing the risk of pet injury.

[0079] In the aforementioned pet toilet system 1, the sidewall portions 421 and 422 may extend rearward at their front ends 429, from a portion continuous with the lower wall portion 470 toward a portion continuous with the upper wall portion 423. The front ends 429 of the sidewall portions 421 and 422 have a bending point IP. The angle α from the lower wall portion 470 to the bending point IP is 30° or more and 90° or less, and the angle β from the bending point IP to the upper wall portion 423 is 60° or more and 90° or less. By making the angle α of the sidewall portions 421 and 422 to the bending point IP 30° or more, a pet can be appropriately guided to enter the toilet along the sidewall guide portions 451 and 452. Furthermore, by making the angle of the sidewall portions 421 and 422 90° or less, a pet can easily enter the toilet from the side of the sidewall portions 421 and 422.

[0080] In the aforementioned pet toilet system 1, the upper end 420a of the opening 420 may be located further back than the midpoint CP of the center position TC of the tray 5 and the front end 471 of the lower wall 470 in the front-rear direction. In this structure, with the upper end 420a of the opening 420 sufficiently positioned rearward, the pet owner can detect dirt on the cover 4 and other surfaces early, even without squatting down. Furthermore, by making the opening 420 larger, the owner can easily reach into the opening 420 to clean the cover 4. Additionally, according to this structure, the front area of ​​the side wall guides 451 and 452 defining the opening 420 is larger, thus allowing a larger area of ​​the side wall guides 451 and 452 for the pet to rest against its body. Furthermore, the timing at which the pet places its face against the side wall guides 451 and 452 and the timing at which it places its body against the side wall guides 451 and 452 are likely to become the same. Therefore, unlike previous products where the pet's face collided with the pet's body first, the face and body come into contact with the guides at the same time, thus reducing the possibility of pet injury.

[0081] In the aforementioned pet toilet system 1, the lower wall guide width of the lower wall guide portion 454, extending in the direction toward the opening 420, may be larger than the side wall guide widths of the side wall guide portions 451 and 452, also extending in the direction toward the opening 420. Furthermore, the side wall guide width may be larger than the upper wall guide width of the upper wall guide portion 453, extending in the direction toward the opening 420. This results in a larger area where the pet is more likely to come into contact with the toilet upon entry, thereby appropriately guiding the pet and mitigating the risk of injury.

[0082] In the aforementioned pet toilet system 1, at least one of the side wall guide width, lower wall guide width, and upper wall guide width may not be constant. With this structure, the width can be adjusted according to the area so that the pet can easily fit against its body, thereby making it easier for the pet to enter the toilet.

[0083] In the aforementioned pet toilet system 1, the angle formed by the upper wall portion 423 and the upper wall guide portion 453 may be an obtuse angle. With this structure, it is possible to appropriately guide the pet towards the opening 420 using the upper wall guide portion 453. Furthermore, when the pet enters the toilet, for example, when its tail makes contact, it does not make point contact with the upper wall guide portion 453, but rather surface contact, thus appropriately reducing the risk of pet injury.

[0084] In the aforementioned pet toilet system 1, the cover 4 may also have a protrusion 425 at the outer end of the lower wall portion 470 in the width direction. With this structure, when a pet enters the toilet from the left or right (outer edge in the width direction) of the opening 420, the protrusion 425 can be used as a footrest for the pet, thereby making it easier for the pet to enter the toilet.

[0085] In the aforementioned pet toilet system 1, the cover 4 may also be configured to include: a fixed cover 41 disposed at the rear; a movable cover 42 disposed at the front; and a pair of connecting portions 43, 43, which rotatably connect the movable cover 42 to the fixed cover 41. The fixed cover 41 has a pair of connecting portions 412, 412, which extend from the portion where the pair of connecting portions 43, 43 are provided towards... The movable cover 42 has a lower wall portion 424, which extends in the width direction to connect the front ends of the pair of connecting portions 412, 412. The lower wall portion 424 is disposed in front of the lower wall portion 413. The lower wall portion 470 is formed by arranging the lower wall guide portion 454 in a manner that overlaps with the lower wall portion 413 and arranging the lower wall portion 424 in front of the lower wall portion 413. In this way, the lower wall portion 470 has a double-layer structure, thereby enabling the pet to be stably supported by the lower wall portion 470, making it easier for the pet to enter the toilet.

[0086] In the aforementioned pet toilet system 1, the lower wall first part 413 may have an area that, when viewed from above with the lower wall first part 413 overlapping the lower wall guide part 454, extends towards the opening 420 beyond the lower wall guide part 454. This allows the lower wall first part 413 to properly support the lower wall guide part 454 when the pet applies its weight, thus preventing the lower wall guide part 454 from flexing and causing the pet's feet to slip. Furthermore, by supporting the lower wall guide part 454 with the lower wall first part, the pet can place its feet on the lower wall guide part 454 and defecate stably when facing the entrance.

[0087] Although embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, although it is described that the side wall guide portions 451, 452 and the side wall portions 421, 422 are composed of the same component, it is not limited thereto. Figure 7 This is a front view of a modified pet toilet system 1A. Figure 7In the pet toilet system 1A shown, the side wall guides 751 and 752 and the side wall portions 421 and 422 are composed of separate components. More specifically, the pet toilet system 1A has an upper wall guide 753 and a lower wall guide 754. Furthermore, the side wall guides 751 and 752, the upper wall guide 753, and the lower wall guide 754 are formed continuously, and the area of ​​the opening 420 is defined by the rear ends of the side wall guides 751 and 752, the lower end of the upper wall guide 753, and the rear end of the lower wall guide 754. The side wall guides 751 and 752, the upper wall guide 753, and the lower wall guide 754 are each composed of the same component. That is, the side wall guides 751 and 752, the upper wall guide 753, and the lower wall guide 754 are all composed of separate components from the side wall portions 421 and 422. Alternatively, the side wall guides 751, 752, the upper wall guide 753, and the lower wall guide 754 may be made of cushioning materials known in the art, such as plastics, polyurethane foam, aggregates of foamed beads, or aggregates of fibers like cotton. With such a structure, guides made of the necessary materials can be provided in the necessary locations to match the characteristics of the pet. Furthermore, the side wall guides can be easily replaced.

[0088] Explanation of reference numerals in the attached figures

[0089] 1. 1A. Pet toilet system; 2. Excretion container; 3. Lower container; 4. Cover (upper container); 5. Tray; 21. Bottom surface; 41. Fixed cover; 42. Movable cover; 43. Connecting part; 412. Connecting part; 413. Lower wall part 1; 420. Opening; 420a. Upper end; 421. 422. Side wall; 423. Upper wall; 423a. Lower end; 424. Lower wall part 2; 424a. End portion; 425, protrusion; 429, front end portion; 451, 452, side wall guide portion; 451a, 452a, rear end portion; 453, upper wall guide portion; 453a, lower end portion; 454, lower wall guide portion; 454a, rear end portion; 470, lower wall portion; 471, front end portion; 751, 752, side wall guide portion; 753, upper wall guide portion; 754, lower wall guide portion; 801, first imaginary surface; 802, second imaginary surface.

Claims

1. A pet toilet system, wherein, This pet toilet system features: An excrement container that collects toilet sand and has a permeable bottom surface; A tray, positioned below the excretion container, houses an absorbent sheet that absorbs liquid that has permeated the bottom surface. The lower container holds the tray; and An upper container, configured to cover the top of the excrement container, and having an opening for the pet to enter and exit. The upper container has: a pair of sidewall portions, which are arranged to face each other on both sides of the opening in the width direction and extend along the front-back direction that is the depth direction of the upper container; The upper wall portion is provided above the opening in a manner that supports the pair of side wall portions; The lower wall portion is located below the opening; And a sidewall guide portion, which extends rearward and inward in the width direction by folding back from the front end of the pair of sidewall portions. The rear end of the sidewall guide portion defines a local area of ​​the opening. The angle formed by the sidewall portion and the sidewall guide portion is an obtuse angle. The upper container further comprises: an upper wall guide portion extending downward from the lower end of the upper wall portion; and a lower wall guide portion extending rearward from the upper end of the lower wall portion. The sidewall guide portion, the upper wall guide portion, and the lower wall guide portion are formed continuously. The area of ​​the opening is defined by the rear end of the sidewall guide, the lower end of the upper wall guide, and the rear end of the lower wall guide. The upper wall guide portion is located further back than the lower wall guide portion in the front-back direction. The upper end of the opening is located behind the midpoint between the center of the tray and the front end of the lower wall in the front-rear direction. The lower wall guide width, which is the length in the extension direction toward the opening, is larger than the side wall guide width, which is the length in the extension direction toward the opening. The width of the sidewall guide is greater than the width of the upper wall guide portion, which is the length of the upper wall guide portion in the direction of extension toward the opening. The angle formed by the upper wall portion and the upper wall guide portion is an obtuse angle.

2. The pet toilet system according to claim 1, wherein, The sidewall guide portion and the sidewall portion are composed of the same component.

3. The pet toilet system according to claim 1, wherein, The sidewall guide portion and the sidewall portion are composed of separate components.

4. The pet toilet system according to any one of claims 1 to 3, wherein, The bottom part of the excretion container is located below the upper end of the opening.

5. The pet toilet system according to any one of claims 1 to 3, wherein, The first imaginary surface faces the opening at a position slightly above the center in the vertical direction. This first imaginary surface is an imaginary surface located at the midpoint of the upper end of the opening and the rear end of the lower wall guide in the front-back direction, and is orthogonal to the front-back direction.

6. The pet toilet system according to claim 5, wherein, The second imaginary surface faces the opening at a position slightly above the center in the vertical direction. This second imaginary surface is an imaginary surface located at the midpoint of the upper end of the opening and the front end of the lower wall in the front-back direction, and is orthogonal to the front-back direction.

7. The pet toilet system according to any one of claims 1 to 3, wherein, The sidewall portion extends rearward at its front end as it moves from the portion continuous with the lower wall portion toward the portion continuous with the upper wall portion. The front end of the side wall has a bending change point, the angle of elevation from the lower wall to the bending change point is 30° or more and 90° or less, and the angle of elevation from the bending change point to the upper wall is 60° or more and 90° or less.

8. The pet toilet system according to claim 7, wherein, The size of at least one of the sidewall guide width, the lower wall guide width, and the upper wall guide width is not constant.

9. The pet toilet system according to any one of claims 1 to 3, wherein, The upper container also has a protrusion at the outer end of the lower wall portion in the width direction.

10. A pet toilet system according to any one of claims 1 to 3, wherein, The upper container is configured to include: a fixed cover disposed at the rear; a movable cover disposed at the front; and a pair of connecting portions that rotatably connect the movable cover to the fixed cover. The fixing cover has: a pair of connecting portions extending forward from the portion where the pair of connecting portions are provided; and a lower wall first portion extending along the width direction such that the front ends of the pair of connecting portions are connected. The movable cover has a second lower wall portion, which is positioned in front of the first lower wall portion. The lower wall portion is formed by arranging the lower wall guide portion in a manner that overlaps with the first lower wall portion, and arranging the second lower wall portion in front of the first lower wall portion.

11. The pet toilet system according to claim 10, wherein, The first part of the lower wall has a region that, when viewed from above with the first part of the lower wall overlapping the lower wall guide, extends toward the opening side beyond the lower wall guide.

Images