Cat litter box

Abstract

The present application provides a cat litter box, comprising a base, a driver, and a drum assembly. The drum assembly is driven by the driver to rotate, and the drum assembly comprises a drum body and a partition plate assembly; the partition plate assembly comprises a partition plate body, a litter guiding plate, a litter filtering plate, and a litter cleaning plate, and the partition plate assembly divides an accommodating chamber into a first chamber and a second chamber; the first chamber allows a pet to enter, and the second chamber is provided with a waste collecting compartment and a litter collecting compartment; the litter filtering plate is a cat litter inlet of the litter collecting compartment; the litter guiding plate can move relative to the partition plate body, so as to be communicated with the first chamber and the waste collecting compartment, and the litter guiding plate is a waste inlet of the waste collecting compartment; and the litter cleaning plate can shield the litter filtering plate, so as to isolate the first chamber from the litter collecting compartment. The waste collecting compartment is located on the side of the drum assembly when the drum assembly is in an initial position, so that the height of the base can be reduced. The interior of the accommodating chamber has no pinching and shearing structure, thereby reducing the risk of pinching cats. By means of providing the litter cleaning plate, cat litter can be automatically transferred into the waste collecting compartment, without requiring manual intervention for cat litter replacement.

Description

cat litter machine

[0001] This application claims priority to Chinese Patent Application No. 202410482585.9, filed on April 22, 2024, entitled "Cat Litter Machine", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of smart home technology, and more specifically, relates to a cat litter machine. Background Technology

[0003] As people's living standards improve, they begin to pursue a richer spiritual life, with many choosing to add color to their lives by keeping pets. Cats, due to their inherent qualities, have become the top choice for pets. Owning a cat can bring its owner great satisfaction, but it also presents many challenges, especially the daily need to clean up after the cat, causing considerable inconvenience for many cat owners.

[0004] The traditional way of cleaning up cat poop involves the cat owner using a scoop to find and remove the feces after the cat has finished defecating in the litter box. This process requires the owner to be in close contact with the feces multiple times a day and endure the stench.

[0005] Then, automatic litter boxes appeared on the market, using a motor to separate cat litter from feces, eliminating the need for manual scooping and bringing great convenience to cat owners. However, current litter machines generally have the waste collection compartment located at the base, resulting in the opening of the litter box being too high from the ground, making it difficult for cats to enter. Furthermore, the internal structure of the compartment contains clamping features, posing a safety hazard and the risk of trapping a cat. Technical issues

[0006] The purpose of this application is to provide a cat litter machine to solve the technical problems existing in the prior art, such as the cat litter machine having a high chamber that is inconvenient for cats to enter, and the presence of clamping structures inside the chamber that pose a risk of trapping cats. Technical solutions

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: A cat litter box is provided, comprising a base, a drive unit, and a roller assembly. The roller assembly is rotatably mounted on the base and driven to rotate by the drive unit. The roller assembly includes a roller body with a receiving cavity and a partition assembly disposed within the roller body. The partition assembly includes a partition body, a sand guide plate, a sand filter plate, and a sand cleaning plate. The partition body is disposed between the sand guide plate and the sand filter plate. The partition body, the sand guide plate, and the sand filter plate together divide the receiving cavity into a first cavity and a second cavity. The first cavity is for pets to enter. The second cavity has a separate waste collection chamber and a litter collection chamber. The sand filter plate is the litter inlet of the litter collection chamber. The sand guide plate is movable relative to the partition body to connect the first cavity and the waste collection chamber, and the sand guide plate is the excrement inlet of the waste collection chamber. The sand cleaning plate can block the sand filter plate to isolate the first cavity and the litter collection chamber.

[0008] In the above solution, the litter box includes a base, a drive unit, and a roller assembly. The roller assembly includes a roller body and a partition assembly. The partition assembly divides the receiving cavity inside the roller body into a first cavity and a second cavity. The first cavity is for pets such as cats to enter, and the second cavity has a separate waste collection chamber and a litter collection chamber. The partition assembly includes a partition body, a litter guide plate, a litter filter plate, and a litter cleaning plate. The litter guide plate is the waste inlet for the waste collection chamber, and the litter filter plate is the litter inlet for the litter collection chamber. When the pet defecates, the litter is located at the bottom of the first cavity. After a pet defecates, when cleaning the waste, the actuator drives the roller assembly to rotate in the first direction. When the filter plate rotates to near the bottom, the cat litter passes through the filter plate and enters the litter collection chamber. Excrement, due to its large size, remains on the filter plate, thus separating the cat litter from the excrement. After the excrement is separated from the cat litter, the roller assembly continues to rotate, and the excrement slides along the surface of the filter plate and partition body to the guide plate. The guide plate is pushed, allowing the excrement to enter the waste collection chamber. Then, the actuator drives the roller assembly to rotate in the second direction, returning the partition assembly to its initial position, and the cat litter returns to the first chamber under gravity. When it's time to change the cat litter, the cleaning plate covers the filter plate, and the actuator drives the roller assembly to rotate in the first direction. The cat litter slides along the surface of the cleaning plate and partition body to the guide plate, which is pushed, allowing the cat litter to enter the waste collection chamber. The litter box provided in this application has a waste collection compartment located on the side of the roller assembly in its initial position. This reduces the height of the base, making it easier for pets to enter the interior of the roller assembly. Furthermore, the partition assembly divides the receiving cavity into a first chamber and a second chamber. The interior of the receiving cavity has no clamping structures, reducing the risk of the cat being trapped. Additionally, the litter cleaning plate automatically transfers the litter to the waste collection compartment, eliminating the need for manual litter replacement.

[0009] Optionally, the sand cleaning plate and the sand filter plate are detachably connected.

[0010] In the above solution, pet owners can install the sand cleaning plate onto the sand filter plate or remove the sand cleaning plate from the sand filter plate, depending on the different working conditions.

[0011] Optionally, a hook-fitting portion is formed on the side of the sand cleaning plate near the partition body, the hook-fitting portion being used to insert between the partition body and the sand filter plate.

[0012] In the above solution, by setting a hanging part on the sand cleaning plate, the sand cleaning plate can be easily installed on the sand filter plate. During installation, it is only necessary to hang the hanging part on the sand filter plate, and the installation and disassembly are effortless.

[0013] Optionally, the filter plate has a first concave-convex portion, and the cleaning plate has a second concave-convex portion, wherein the first concave-convex portion and the second concave-convex portion are engaged.

[0014] In the above solution, the sand cleaning plate can be snapped onto the filter sand plate by the cooperation of the first and second concave and convex parts, thereby realizing the detachable connection between the sand cleaning plate and the filter sand plate. Moreover, when the sand cleaning plate is disassembled, no installation or disassembly tools are required, and it can be installed directly by hand.

[0015] Optionally, the side of the filter plate closest to the partition body is rotatably connected to the partition body, and the roller body is provided with a stop portion on the side of the filter plate facing the sand collection bin.

[0016] In the above solution, by setting the filter plate to be rotatably connected to the partition body and providing a stop on the roller body, the filter plate can only rotate in the direction away from the litter collection chamber. This ensures that during litter collection, the filter plate remains stably positioned at the edge of the litter collection chamber, without affecting litter filtration. After collection, the filter plate can be manually rotated to open the litter collection chamber, allowing the litter to quickly fall back into the first chamber, preventing excessive litter residue from remaining in the litter collection chamber.

[0017] Optionally, the gap between the roller body and the base is less than 5 mm.

[0018] In the above solution, the risk of the cat getting caught can be reduced by setting the gap between the roller body and the base to less than 5mm.

[0019] Optionally, the base is provided with a gravity sensor for detecting changes in the weight of the roller assembly.

[0020] In the above solution, by setting up a gravity sensor, it is possible to detect whether a pet has entered the roller assembly. If a pet is detected, the rotating roller assembly can be stopped to prevent the cat from getting caught.

[0021] Optionally, the roller body includes a first cylinder, a second cylinder, and a cover. The first cylinder has a pet entrance for a pet to enter, and the cover is disposed at the outlet of the waste collection chamber. The partition body extends along the inner wall of the first cylinder and / or the second cylinder to form an extension, and the extension is fixed to the first cylinder and / or the second cylinder.

[0022] In the above solution, by configuring the roller body as a multi-part assembly consisting of a first cylinder, a second cylinder, and a cover, the roller body is easier to manufacture and the partition assembly and other structures are easier to install. The extension allows the partition assembly to fit snugly against the inner wall of the roller body, further reducing the risk of the roller getting caught; it also makes it easier to install the partition assembly on the inner wall of the roller body.

[0023] Optionally, one side of the first cylindrical member has a first toothed portion, and one side of the second cylindrical member has a second toothed portion, the first toothed portion and the second toothed portion together forming an annular toothed structure.

[0024] In the above scheme, by setting the tooth structure as a separate first tooth part and second tooth part, the processing difficulty of the tooth structure is reduced, thereby reducing the processing cost.

[0025] Optionally, the base has a plurality of roller assemblies on the side facing the roller assembly for supporting the roller assembly.

[0026] In the above solution, by setting a roller assembly on the base, not only can the roller assembly be supported, but the roller assembly can also be rotated and guided, reducing the friction between the base and the roller assembly, eliminating the need for bearings, and reducing the parts cost of the cat litter machine. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a three-dimensional structural diagram of the cat litter machine provided in the embodiment of this application;

[0029] Figure 2 is a partial three-dimensional structural diagram of the cat litter machine provided in the embodiment of this application;

[0030] Figure 3 is an exploded structural diagram of the cat litter machine provided in the embodiment of this application;

[0031] Figure 4 is a cross-sectional view of the cat litter machine provided in the embodiment of this application;

[0032] Figure 5 is a perspective structural diagram of the partition assembly provided in an embodiment of this application;

[0033] Figure 6 is a three-dimensional structural diagram of the sand cleaning plate and the sand filter plate provided in the embodiment of this application;

[0034] Figure 7 is a three-dimensional structural diagram of the base provided in this application.

[0035] In the figures, the following labels are used: 10-base; 11-roller assembly; 12-gravity sensor; 20-roller assembly; 201-first cavity; 202-second cavity; 2021-sand collection bin; 2022-feces collection bin; 203-excrement inlet; 21-roller body; 211-first cylinder; 212-second cylinder; 213-cover; 214-tooth structure; 2141-first toothed part; 2142-second toothed part; 215-stop part; 22-partition assembly; 221-filter plate; 2211-rotating shaft part; 222-partition body; 2221-extension part; 223-sand guide plate; 224-sand cleaning plate; 2241-handle part; 2242-shaft hole part; 2243-hanging part; 225-divider plate; 226-garbage can. Embodiments of the present invention

[0036] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0037] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] As people's living standards improve, they begin to pursue a richer spiritual life, with many choosing to add color to their lives by keeping pets. Cats, due to their inherent qualities, have become the top choice for pets. Owning a cat can bring its owner great satisfaction, but it also presents many challenges, especially the daily need to clean up after the cat, causing considerable inconvenience for many cat owners.

[0041] The traditional way of cleaning up cat poop involves the cat owner using a scoop to find and remove the feces after the cat has finished defecating in the litter box. This process requires the owner to be in close contact with the feces multiple times a day and endure the stench.

[0042] Then, automatic litter boxes appeared on the market, using a motor to separate cat litter from feces, eliminating the need for manual scooping and bringing great convenience to cat owners. However, current litter machines generally have the waste collection compartment located at the base, resulting in the opening of the litter box being too high from the ground, making it difficult for cats to enter. Furthermore, the internal structure of the compartment contains clamping features, posing a safety hazard and the risk of trapping a cat.

[0043] The cat litter machine provided in the embodiments of this application will now be described.

[0044] Please refer to Figures 1 to 4 together. The cat litter machine includes a base 10, a drive unit, and a roller assembly 20.

[0045] The base 10 is placed on the ground to support and stabilize the entire litter box. The roller assembly 20 is mounted on the base 10, which supports the roller assembly 20 and allows it to rotate on the base 10.

[0046] The driver is used to drive the roller assembly 20 to rotate. The driver can output rotational motion, thereby causing the roller assembly 20 to rotate. The rotation of the roller assembly 20 is generally self-rotation, that is, the rotation axis of the roller assembly 20 is its central axis. The position of the roller assembly 20 remains unchanged when it rotates, maintaining the stability of the cat litter machine during movement.

[0047] The roller assembly 20 is mounted on the base 10 and supported by the base 10. The roller assembly 20 includes a roller body 21 and a partition assembly 22. The roller body 21 has a receiving cavity inside, and the partition assembly 22 divides the receiving cavity into a first cavity 201 and a second cavity 202.

[0048] The first cavity 201 serves two purposes: firstly, it provides a space for pets to urinate and defecate; secondly, it holds cat litter. After a pet defecates, the litter will clump around the excrement, forming a ball (hereinafter referred to as excrement for ease of description and understanding). In other words, when a pet needs to relieve itself, it enters the first cavity 201. At this time, the cat litter is located inside the first cavity 201 and, under the influence of gravity, is positioned at the lowest point of the first cavity 201. The partition assembly 22 divides the cavity into two relatively independent chambers, reducing the risk of the cat getting trapped.

[0049] The second chamber 202 has a relatively independent feces collection chamber 2022 and a litter collection chamber 2021. The feces collection chamber 2022 is used to collect excrement and can also collect cat litter that needs to be replaced. In short, it is used to collect items to be discarded. The litter collection chamber 2021 is used to collect cat litter each time feces are collected, and the cat litter is recycled.

[0050] The partition assembly 22 includes a partition body 222, a sand guide plate 223, a sand filter plate 221, and a sand cleaning plate 224. The partition body 222, the sand guide plate 223, and the sand filter plate 221 together divide the receiving cavity into a first cavity 201 and a second cavity 202. The partition body 222 is disposed between the sand guide plate 223 and the sand filter plate 221. The sand filter plate 221 is provided with mesh holes, allowing cat litter to pass through the sand filter plate 221, but preventing excrement from passing through the sand filter plate 221. The sand filter plate 221 is the cat litter inlet of the litter collection bin 2021, meaning that cat litter can enter the litter collection bin 2021 from the first cavity 201 through the sand filter plate 221. The sand guide plate 223 is movable relative to the partition body 222, and the sand guide plate 223 is the excrement inlet 203 of the waste collection chamber 2022. When the sand guide plate 223 moves relative to the partition body 222, the waste collection chamber 2022 can be opened, that is, the first cavity 201 and the waste collection chamber 2022 can be connected, meaning that excrement can enter the waste collection chamber 2022 from the first cavity 201 through the sand guide plate 223. The cleaning plate 224 can block the filter plate 221 to isolate the first cavity 201 and the waste collection chamber 2021. In this way, when cat litter passes the position corresponding to the cleaning plate 224, cat litter will not enter the waste collection chamber 2021.

[0051] In the initial state, part of the inner wall of the first chamber 201 is located at the lowest point of the receiving chamber, and the cat litter is located here under the action of gravity. Therefore, the waste collection chamber 2022 is located on the side of the roller assembly 20, making it convenient for pet owners to open the waste collection chamber 2022 and clean up the excrement.

[0052] When litter collection is needed, the driver drives the roller assembly 20 to rotate in the first direction, gradually leveling the filter plate 221. Cat litter passes through the filter plate 221 and enters the litter collection chamber 2021. Excrement, due to its larger volume, remains on the filter plate 221. The roller assembly 20 continues to rotate in the first direction, and the guide plate 223 moves to gradually become horizontal or horizontal. Excrement pushes aside the guide plate 223 and enters the litter collection chamber 2022. Then, the driver drives the roller assembly 20 to rotate in the second direction until the litter machine returns to its initial state. At this time, the cat litter returns from the litter collection chamber 2021 through the litter drain plate back to the first chamber 201, awaiting the pet's next defecation. The second direction is opposite to the first direction; for example, if the first direction is clockwise, the second direction is counterclockwise.

[0053] When the litter needs to be changed, the cleaning plate 224 covers the filter plate 221, the driver drives the roller assembly 20 to rotate in the first direction, the guide plate 223 moves to gradually become horizontal or horizontal, the litter pushes the guide plate 223 and enters the collection chamber 2022, then the driver drives the roller assembly 20 to rotate in the second direction until the litter machine returns to its initial state, and the pet owner puts new litter into the first chamber 201.

[0054] The 2022 waste collection chamber can be cleaned periodically or after each waste collection. It can be cleaned by changing the garbage bag or by emptying the container.

[0055] The cat litter machine in the above embodiment includes a base 10, a driver, and a roller assembly 20. The roller assembly 20 includes a roller body 21 and a partition assembly 22. The partition assembly 22 divides the receiving cavity inside the roller body 21 into a first cavity 201 and a second cavity 202. The first cavity 201 is for pets such as cats to enter, and the second cavity 202 has a separate waste collection chamber 2022 and a litter collection chamber 2021. The partition assembly 22 includes a partition body 222, a litter guide plate 223, a litter filter plate 221, and a litter cleaning plate 224. The litter guide plate 223 is the excrement inlet 203 of the waste collection chamber 2022, and the litter filter plate 221 is the litter inlet of the litter collection chamber 2021. When a pet defecates, the litter is located at the bottom of the first cavity 201. When a pet defecates and its excrement needs to be cleaned, the drive unit rotates the roller assembly 20 in the first direction. When the filter plate 221 rotates to near the bottom, the cat litter enters the litter collection chamber 2021 through the filter plate 221. The excrement, due to its large volume, remains on the filter plate 221, thus separating the cat litter from the excrement. After the excrement is separated from the cat litter, the roller assembly 20 continues to rotate, and the excrement slides along the surface of the filter plate 221 and the partition body 222 to the guide plate 223. The guide plate 223 is pushed, allowing the excrement to enter the waste collection chamber 2022. Then, the drive unit rotates the roller assembly 20 in the second direction, causing the partition assembly 22 to return to its initial position, and the cat litter returns to the first chamber 201 under the action of gravity. When the litter needs to be changed, the cleaning plate 224 covers the filter plate 221, and the roller assembly 20 is driven to rotate in the first direction by the driver. The litter slides along the surface of the cleaning plate 224 and the partition body 222 to the guide plate 223. The guide plate 223 is pushed, and the litter enters the collection chamber 2022. In the litter machine provided by this application, the collection chamber 2022 is located on the side of the roller assembly 20 in its initial position, thus lowering the height of the base 10 and making it easier for pets to enter the interior of the roller assembly 20. Moreover, the partition assembly 22 divides the receiving cavity into a first cavity 201 and a second cavity 202. There are no clamping structures inside the receiving cavity, which reduces the risk of the cat being pinched. In addition, the cleaning plate 224 can automatically transfer the litter into the collection chamber 2022, eliminating the need for manual litter replacement.

[0056] In some embodiments of this application, as shown in Figures 5 and 6, the cleaning plate 224 and the filter plate 221 are detachably connected. Pet owners can install the cleaning plate 224 onto the filter plate 221 or remove it from the filter plate 221 depending on the working conditions. Specifically, when waste collection is required, i.e., when it is necessary to separate excrement from cat litter, the cleaning plate 224 is not installed on the filter plate 221, and the cat litter passes through the filter plate 221, achieving separation of excrement and cat litter. When cat litter needs to be changed, the cleaning plate 224 is installed on the filter plate 221. When the roller assembly 20 rotates, the cat litter will not pass through the filter plate 221 into the litter collection chamber 2021, but will directly enter the waste collection chamber 2022.

[0057] In some embodiments of this application, please refer to Figures 5 and 6. The filter plate 221 has a first concave-convex portion, and the cleaning plate 224 has a second concave-convex portion. The first and second concave-convex portions are engaged with each other. The first concave-convex portion is a recessed structure, or a raised structure, or includes both a recessed structure and a raised structure. The second concave-convex portion is a recessed structure, or a raised structure, or includes both a recessed structure and a raised structure.

[0058] By engaging the first and second protrusions, the sand cleaning plate 224 can be snapped onto the filter plate 221, thus achieving a detachable connection between the sand cleaning plate 224 and the filter plate 221. Moreover, when assembling or disassembling the sand cleaning plate 224, no installation or disassembly tools are required; it can be installed manually.

[0059] In some embodiments, referring to Figures 5 and 6, one of the first and second concave-convex portions is a pivot portion 2211, and the other is a shaft hole portion 2242, allowing the sand cleaning plate 224 to rotate relative to the filter sand plate 221. This embodiment includes two cases: the first concave-convex portion is the pivot portion 2211, and the second concave-convex portion is the shaft hole portion 2242; or, the first concave-convex portion is the shaft hole portion 2242, and the second concave-convex portion is the pivot portion 2211. When the first and second concave-convex portions are engaged, the pivot portion 2211 and the shaft hole portion 2242 are coaxially arranged, and the cross-sections of both the pivot portion 2211 and the shaft hole portion 2242 are circular, thus allowing the sand cleaning plate 224 to rotate relative to the filter sand plate 221. Thus, when installing the sand cleaning plate 224, it can be first positioned at a certain angle to the filter plate 221, with the first and second concave-convex parts facing each other. This allows the hand to easily reach between the sand cleaning plate 224 and the filter plate 221 to apply force, causing the first and second concave-convex parts to interlock. After interlocking, the sand cleaning plate 224 can be rotated relative to the filter plate 221 to block it. Similarly, when disassembling the sand cleaning plate 224, it can be rotated relative to the filter plate 221 until they form a certain angle, making it easier for the pet owner to apply force to detach the first and second concave-convex parts.

[0060] Optionally, there are two of each of the first and second concave-convex portions, both of which are located on the side of the sand cleaning plate 224 near the partition body 222, thereby making the connection between the sand cleaning plate 224 and the filter plate 221 more stable.

[0061] Optionally, a handle 2241 for installation is provided on the side of the sand cleaning plate 224 facing away from the filter plate 221. The handle 2241 can be understood as a raised structure protruding from the surface of the sand cleaning plate 224, which makes it convenient for pet owners to hold the sand cleaning plate 224 for installation or removal.

[0062] The handle 2241 may be a structure such as a raised rib that protrudes from the surface of the sand-cleaning plate 224. The number of handles 2241 may be one or more, and their specific number and distribution are not limited here.

[0063] In some embodiments of this application, please refer to FIG6. A hook portion 2243 is formed on the side of the sand cleaning plate 224 near the partition body 222. When the sand cleaning plate 224 is installed on the sand filter plate 221, the hook portion 2243 is inserted between the sand filter plate 221 and the partition body 222.

[0064] By providing a mounting part 2243 on the sand cleaning plate 224, the sand cleaning plate 224 can be easily installed on the sand filter plate 221. During installation, simply hang the mounting part 2243 on the sand filter plate 221; installation and disassembly are effortless.

[0065] In some embodiments, the mounting portion 2243 is provided in a sheet shape, which allows it to be inserted more easily between the filter plate 221 and the partition body 222.

[0066] In some embodiments, the number of hook parts 2243 is multiple, and they are distributed sequentially along the length of the gap between the partition body 222 and the filter plate 221.

[0067] In some embodiments of this application, please refer to Figures 3, 5, and 6. The side of the filter plate 221 closest to the partition body 222 is rotatably connected to the partition body 222, and the roller body 21 is provided with a stop 215 on the side of the filter plate 221 facing the sand collection bin 2021. In the initial state of the cat litter machine, the sand guide plate 223, the partition body 222, and the filter plate 221 are arranged in descending order. The side of the filter plate 221 closest to the partition body 222 is the top side of the filter plate 221, that is, the top side of the filter plate 221 is rotatably connected to the partition body 222. Meanwhile, the inner wall of the roller body 21 is provided with a stop 215, which is used to stop the filter sand plate 221, that is, to restrict the rotation of the filter sand plate 221. Since the stop 215 is provided on the side of the filter sand plate 221 facing the sand collection bin 2021, the stop 215 is used to stop the movement of the filter sand plate 221 toward the inside of the sand collection bin 2021. The filter sand plate 221 can only rotate in the direction away from the sand collection bin 2021.

[0068] By configuring the filter plate 221 to be rotatably connected to the partition body 222, and providing a stop 215 on the roller body 21, the filter plate 221 can only rotate in a direction away from the litter collection chamber 2021. In this way, during litter collection, the filter plate 221 remains stably positioned at the edge of the litter collection chamber 2021, without affecting litter collection and litter filtering. After collection is complete, the filter plate 221 can be manually rotated to open the litter collection chamber 2021, allowing the litter to quickly fall back into the first chamber 201, preventing excessive litter residue from remaining in the litter collection chamber 2021.

[0069] In some embodiments of this application, referring to Figure 5, the side of the sand guide plate 223 away from the partition body 222 is rotatably connected to the roller body 21. In the initial state of the cat litter machine, the sand guide plate 223, the partition body 222, and the filter plate 221 are arranged sequentially from high to low. The side of the sand guide plate 223 away from the partition body 222 is the top side of the sand guide plate 223, that is, the top of the sand guide plate 223 is rotatably connected to the roller body 21. In this way, when the excrement moves to the sand guide plate 223, it can directly push the sand guide plate 223 closer to the partition body 222, so that the excrement can enter the waste collection chamber 2022 as quickly as possible.

[0070] In some embodiments of this application, please refer to FIG5. The surface of the filter plate 221 facing the first cavity 201, the partition body 222 facing the first cavity 201, and the sand guide plate 223 facing the first cavity 201 are smoothly arranged. This surface can be called the first surface. The first surface is one of the inner walls of the first cavity 201, and the other inner walls of the first cavity 201 are part of the inner walls of the roller body 21.

[0071] By making the first surface smooth, a portion of the inner wall of the first cavity 201 is also smooth, and the remaining inner walls of the first cavity 201 (a portion of the inner wall of the roller body 21) are also usually smooth, so that when the pet is inside the first cavity 201, it will not be pinched or scratched by the inner wall of the first cavity 201, thus protecting the pet.

[0072] In some embodiments, the side of the filter plate 221 facing the first cavity 201, the side of the partition body 222 facing the first cavity 201, and the side of the guide plate 223 facing the first cavity 201 can be a plane or a curved surface, as long as they are smoothly arranged.

[0073] In some embodiments of this application, please refer to Figures 3 and 4. The roller assembly 20 also includes a trash can 226. The interior of the trash can 226 is the waste collection chamber 2022. The trash can 226 can be used with a trash bag or directly. The side of the partition body 222 facing the trash can 226 and the side of the roller body 21 facing the trash can 226 form a waste chamber. The trash can 226 is disposed inside the waste chamber and can be removed from the waste chamber for the convenience of pet owners to clean up excrement.

[0074] In some embodiments, the roller assembly 20 further includes a partition plate 225 disposed within the second cavity 202. The partition plate 225 is used to divide the second cavity 202 into a waste collection chamber 2022 and a sand collection chamber 2021, or it can be understood as dividing it into a waste chamber and a sand collection chamber 2021. One side of the partition plate 225 is connected to the partition body 222, and the other side of the partition plate 225 extends to the inner wall of the roller body 21.

[0075] Optionally, the partition plate 225 is integrally formed with the partition plate body 222, which can reduce the number of parts in the roller assembly 20, making the installation of the roller assembly 20 simpler and its internal structural layout simpler.

[0076] In some embodiments of this application, the gap between the roller body 21 and the base 10 is less than 5mm, such as 4mm or 3mm. The gap between the roller body 21 and the base 10 can be understood as the minimum gap between them. If the gap between the roller body 21 and the base 10 is too large, pet hair or limbs can easily get caught between them, posing a risk of trapping a cat. By setting the gap between the roller body 21 and the base 10 to less than 5mm, the risk of trapping a cat can be reduced.

[0077] In some embodiments of this application, referring to Figure 1, a gravity sensor 12 for detecting weight changes in the roller assembly 20 is provided on the base 10. Here, the weight change of the roller assembly 20 does not refer to the weight change of the roller assembly 20 itself, but rather to the change in the total weight of the roller assembly 20 and the objects contained within it. For example, a change in the weight of cat litter will cause a change in the weight of the roller assembly 20, and the presence or absence of a pet inside the roller assembly 20 will also cause a change in its weight.

[0078] By setting the gravity sensor 12, it is possible to detect whether a pet has entered the roller assembly 20. If a pet is detected, the rotating roller assembly 20 can be stopped to prevent the cat from getting caught.

[0079] In some embodiments of this application, the corners of the roller body 21 are provided with rounded corner structures to make the surface of the roller body 21 smooth and avoid scratching the pet.

[0080] In some embodiments of this application, referring to Figures 2 to 4, the roller body 21 includes a first cylinder 211, a second cylinder 212, and a cover 213. The first cylinder 211 has a pet inlet for the pet to enter, and the cover 213 covers the outlet of the waste collection chamber 2022. A partition body 222 extends along the inner wall of the first cylinder 211 and / or the second cylinder 212 to form an extension 2221, which is fixed to the first cylinder 211 and / or the second cylinder 212. The first cylinder 211, the second cylinder 212, and the cover 213 form the roller body 21 and a receiving cavity. When a pet needs to defecate, it enters the first cavity 201 through the pet inlet of the first cylinder 211. When the waste collection chamber 2022 needs to be cleaned, the cover 213 is opened to expose the waste collection chamber 2022, thereby facilitating the cleaning of the collected excrement. The extension 2221 is integrally formed with the partition body 222. The extension 2221 can be fixed to the inner wall of the first cylinder 211 and / or the second cylinder 212. The partition body 222 can be fixed by fixing the extension 2221, which facilitates the installation of the partition body 222.

[0081] By configuring the roller body 21 as a multi-piece assembly consisting of a first cylindrical member 211, a second cylindrical member 212, and a cover 213, the roller body 21 is easier to manufacture and easier to install structures such as the partition assembly 22. The extension 2221 serves two purposes: first, it allows the partition assembly 22 to fit snugly against the inner wall of the roller body 21, further reducing the risk of the roller getting caught; second, it makes it easier to install the partition assembly 22 on the inner wall of the roller body 21.

[0082] In some embodiments, the extension 2221 is fitted against the inner wall of the roller body 21, making it easier to fix the extension 2221 to the roller body 21. Specifically, the extension 2221 may be fitted against the inner wall of the first cylinder 211, or the extension 2221 may be fitted against the inner wall of the second cylinder 212, or the extension 2221 may be fitted against the inner walls of both the first cylinder 211 and the second cylinder 212.

[0083] In some embodiments of this application, referring to Figures 2 and 3, the first cylindrical member 211 has a first toothed portion 2141 on one side, and the second cylindrical member 212 has a second toothed portion 2142 on one side. The first toothed portion 2141 and the second toothed portion 2142 together form an annular toothed structure 214. The rotation of the roller assembly 20 can be controlled by meshing with the toothed structure 214 through a gear or other structure. Both the first toothed portion 2141 and the second toothed portion 2142 are semi-arc-shaped and are not closed structures. After the first cylindrical member 211 and the second cylindrical member 212 are connected, the first toothed portion 2141 and the second toothed portion 2142 form a complete annulus, thereby enabling meshing transmission.

[0084] By setting the tooth structure 214 as a separate first tooth portion 2141 and second tooth portion 2142, the machining difficulty of the tooth structure 214 is reduced, thereby reducing the machining cost.

[0085] In some embodiments, the tooth structure 214 formed by the first toothed portion 2141 and the second toothed portion 2142 is located on the outer side of the roller body 21, and the tooth structure 214 is an external tooth structure 214, which facilitates meshing transmission of the tooth structure 214 by other gears.

[0086] In other embodiments, the toothed structure 214 may be independently disposed on one side of the first cylindrical member 211, or independently disposed on one side of the second cylindrical member 212.

[0087] In some embodiments of this application, the cat litter machine also includes a drive gear, which is driven to rotate by a driver and meshes with the toothed structure 214. Thus, the driver can drive the drive gear to rotate the toothed structure 214, thereby causing the roller assembly 20 to rotate.

[0088] In some embodiments, the driver is a motor, electric motor, etc.

[0089] In some embodiments, the drive and the drive gear are disposed inside the base 10.

[0090] In some embodiments of this application, referring to FIG7, a plurality of roller assemblies 11 for supporting the roller assembly 20 are provided on the side of the base 10 facing the roller assembly 20. It is understood that a plurality of roller assemblies 11 are provided on the top surface of the base 10, the roller assemblies 11 supporting the roller assembly 20, the rotation axis of the roller assembly 11 being parallel to the rotation axis of the roller assembly 20, guiding the rotation of the roller assembly 20 and reducing the friction between the base 10 and the roller assembly 20.

[0091] By setting the roller assembly 11 on the base 10, not only can the roller assembly 20 be supported, but the roller assembly 20 can also be rotated and guided, reducing the friction between the base 10 and the roller assembly 20. There is no need to set bearings, which reduces the part cost of the cat litter machine.

[0092] In some embodiments, the number of roller assemblies 20 is four, which are respectively arranged at the four corners of the base 10 to provide more stable support for the roller assemblies 20.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cat litter box machine, characterized in that: The device includes a base, a driver, and a roller assembly. The roller assembly is rotatably mounted on the base and driven to rotate by the driver. The roller assembly includes a roller body with a receiving cavity and a partition assembly disposed within the roller body. The partition assembly includes a partition body, a sand guide plate, a sand filter plate, and a sand cleaning plate. The partition body is disposed between the sand guide plate and the sand filter plate. The partition body, the sand guide plate, and the sand filter plate together divide the receiving cavity into a first cavity and a second cavity. The first cavity is for pets to enter. The second cavity has a separate waste collection chamber and a litter collection chamber. The sand filter plate is the litter inlet of the litter collection chamber. The sand guide plate is movable relative to the partition body to connect the first cavity and the waste collection chamber, and the sand guide plate is the excrement inlet of the waste collection chamber. The sand cleaning plate can cover the sand filter plate to isolate the first cavity and the litter collection chamber.

2. The cat litter machine as described in claim 1, characterized in that: The sand cleaning plate and the sand filter plate are detachably connected.

3. The cat litter machine as described in claim 2, characterized in that: A hook-fitting part extends from the side of the sand cleaning plate near the partition body, and the hook-fitting part is used to be inserted between the partition body and the sand filter plate.

4. The cat litter machine as described in claim 2, characterized in that: The filter plate has a first concave-convex portion, and the cleaning plate has a second concave-convex portion, which are engaged with each other.

5. The cat litter machine as described in any one of claims 1-4, characterized in that: The side of the filter plate closest to the partition body is rotatably connected to the partition body, and the roller body is provided with a stop part on the side of the filter plate facing the sand collection bin.

6. The cat litter machine as described in any one of claims 1-4, characterized in that: The gap between the roller body and the base is less than 5mm.

7. The cat litter machine as described in any one of claims 1-4, characterized in that: The base is equipped with a gravity sensor for detecting changes in the weight of the roller assembly.

8. The cat litter machine as described in any one of claims 1-4, characterized in that: The roller body includes a first cylinder, a second cylinder, and a cover. The first cylinder has a pet entrance for pets to enter, and the cover is placed over the outlet of the waste collection chamber. The partition body extends along the inner wall of the first cylinder and / or the second cylinder to form an extension, and the extension is fixed to the first cylinder and / or the second cylinder.

9. The cat litter machine as described in claim 8, characterized in that: The first cylindrical member has a first toothed portion on one side, and the second cylindrical member has a second toothed portion on one side. The first toothed portion and the second toothed portion together form an annular toothed structure.

10. The cat litter machine as described in any one of claims 1-4, characterized in that: The base has a plurality of roller assemblies on the side facing the roller assembly for supporting the roller assembly.

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