Automatic cat droppings cleaning device

Abstract

The automatic cat droppings cleaning device provided by the present application comprises a spherical tank assembly arranged to include at least three spaces, namely, a working chamber for piling cat litter and cat excretion activities, a sorting chamber for sorting cat litter and cat droppings, and a collection chamber for storing cat droppings, and a drive assembly arranged to drive the spherical tank assembly to rotate, and a surface of the sorting chamber facing the center of the spherical tank assembly is provided with a plurality of sieve holes. Here, when the spherical tank assembly rotates to a first position, the sorting chamber is located at the lowest position of the spherical tank assembly, and the cat litter falls into the sorting chamber through the sieve holes, and the cat droppings are larger in size than the sieve holes and therefore remain in the working chamber. When the spherical tank assembly rotates to a second position, the collection chamber is located at the lowest position of the spherical tank assembly, and the cat droppings fall into the collection chamber. The structure of the present application is simple and compact, the device has a small volume, is portable, has a high space utilization rate, and is easy to clean.

Description

Cross-references to related literature

[0001] This application claims priority to a patent application filed with the State Intellectual Property Office of China on June 1, 2021, bearing application number 202110605442.9 and titled "Automatic cat droppings cleaning device." [Technical Field]

[0002] The present application relates to the technical field of pet supplies, and more particularly to an automatic cat litter cleaning device. [Background technology]

[0003] With the current trend toward improved material life and simpler families, more and more households, especially single young people, prefer to keep pets as daily companions for their families and playmates during leisure time. The trend toward keeping cats is particularly strong in economically developed cities due to limited living space. Generally, trained cats excrete feces in cat litter and then bury it. This requires people to manually remove the feces from the litter, which takes time and effort. Furthermore, people need to go to work during the day, which prevents timely cleaning of cat feces, leading to fecal accumulation. Accumulated feces not only creates a foul odor in the room but also leads to a series of hygiene problems, making the invention of an automatic cat fecal cleaning device particularly important. Among existing automatic cat fecal cleaning devices, drum-type cat fecal cleaning devices based on the gravity screening principle are favored by consumers and occupy a major market share due to their simple structure and stable performance.

[0004] In the prior art, drum-type cat litter cleaners based on the gravity screening principle all have a litter collection compartment attached to the drum, which does not rotate with the drum when it rotates. In contrast, some designs place the litter collection compartment within the base, which increases the thickness of the base. Furthermore, the base must reserve a certain amount of space, increasing the height of the base, further increasing the height and difficulty for cats to enter the drum, making it particularly inconvenient for short cats. Furthermore, because the drum is located high, cats may jump when leaving the drum, carrying the cat litter inside the drum and soiling the ground. Therefore, some manufacturers add a cat litter collector at the cat's entry and exit point to collect the removed cat litter, or add a ramp at the entry and exit point to facilitate cat entry and exit. However, this increases manufacturing costs and the footprint of the cat litter cleaner. Furthermore, because the litter collection compartment is located at the bottom, users must squat down to use it, which is inconvenient for tall or heavy users.

[0005] In addition, by placing the collection compartment behind the drum, the front-to-rear length of the entire cat feces cleaning device is significantly increased, increasing the footprint of the cat feces cleaning device, making it unsuitable for use by users in small rooms and resulting in low space utilization of the cat feces cleaning device.Furthermore, every time a user wants to clean the collection compartment, they must move or adjust the position of the cat feces cleaning device to remove the collection compartment located behind the drum, which is inconvenient and time-consuming.

[0006] Furthermore, prior art cat litter cleaners require the addition of a dedicated passageway to remove cat litter from the drum into the collection compartment. This requires high structural alignment accuracy during the removal process, increasing the complexity of the structure. If the passageway is not perfectly aligned, the cat litter will contaminate the entire removal channel, increasing the user's cleaning workload. Furthermore, cat litter in the collection compartment is likely to accumulate at the entrance to the passageway, potentially triggering the premature detection signal indicating the collection compartment is full. When the collection compartment is heavily loaded with cat litter, the cat litter may be carried into the gap between the drum and the base while the drum is rotating, further increasing the difficulty and workload of cleaning. On the other hand, if a dedicated passageway is installed between the drum and the collection compartment, the passageway moves relative to the drum as it rotates, creating a shearing motion, which can lead to cat entrapment accidents in the cat litter cleaner. To prevent such cat entrapment accidents, some manufacturers install multiple safety sensors to determine whether a cat is present in the drum, while others install emergency stop sensors. These measures not only increase production costs but also increase the complexity of the program, and the more complex the program, the more prone it is to errors. For example, if the device detects a risk of a cat getting trapped, it will activate an emergency stop and then be unable to determine whether the cat has escaped. If it is reset at this time, the injury to the cat may become more severe, and if it is not reset, the device will become unusable. This judgment itself can also be a system malfunction, and if it is activated incorrectly, the device will become unusable, which means that if the user goes out to the office or on a business trip, the cat will be unable to use the device for a long time. Summary of the Invention [Problem to be solved by the invention]

[0007] In order to at least partially solve the above and other potential problems, the invention of the present disclosure aims to provide an automatic cat litter cleaning device that can automatically separate cat litter and cat litter while simultaneously sealingly storing the cat litter, and that has a simple and compact structure, a small volume, is portable, has a high space utilization rate, and is easy to clean. [Means for solving the problem]

[0008] The disclosed invention relates to an automatic cat litter cleaning device. The automatic cat litter cleaning device includes a spherical tank assembly arranged to include at least three spaces: a working chamber for storing cat litter and allowing cats to defecate; a sorting chamber for separating cat litter from cat litter; and a collection chamber for storing cat litter. A drive assembly is arranged to drive the spherical tank assembly to rotate. The surface of the sorting chamber facing the center of the spherical tank assembly has a plurality of sieve holes. When the spherical tank assembly is in its initial position, the working chamber is located at its lowest position. When the spherical tank assembly rotates from its initial position to a first position, the sorting chamber is located at its lowest position, and cat litter falls into the sorting chamber through the sieve holes. Cat litter, being larger in size than the sieve holes, remains in the working chamber. When the spherical tank assembly rotates to the second position, the collection chamber is at the lowest position of the spherical tank assembly and cat feces falls into the collection chamber.

[0009] According to the embodiment of the present disclosure, the spherical tank assembly is divided into at least three spaces, i.e., the working chamber, the sorting chamber, and the collecting chamber are integrated into the spherical tank assembly, thereby realizing the sieving, collection, and storage of cat feces all within the spherical tank assembly, resulting in a simple and compact overall structure, a small device volume, portability, and high space utilization. Furthermore, since the cat feces always remain within the spherical tank assembly, they do not contaminate other components, reducing the amount of work required for users to clean and making cleaning more convenient.

[0010] In some embodiments, the spherical tank assembly is a device that combines the work chamber, the sorting chamber, and the collection chamber, and has an outer circumferential contour in the form of a solid of revolution. By making the spherical tank assembly in this way, the space utilization rate of the spherical tank assembly is maximized, and the space of the work chamber is maximized, making it easier for cats to enter the work chamber and perform excretion activities.

[0011] In some embodiments, the working chamber has an axial entrance configured to allow cats to enter and exit the working chamber, and the collection chamber has an opening positioned to allow cat feces to enter the collection chamber.

[0012] Because the work chamber, sorting chamber, and collection chamber are all integrated into the spherical tank assembly, the spherical tank assembly is positioned almost flush with the ground, and the entrance to the work chamber is no higher than 10 cm, making it easier for older or overweight cats to enter and exit. Furthermore, the low entrance height eliminates the need for cats to jump, fundamentally resolving the problem of large amounts of cat litter being removed in the prior art. The entrance through which cats enter the work chamber and the opening of the collection chamber always remain relatively stationary, and the collection chamber always moves in tandem with the spherical tank assembly. As a result, the entire automatic cat litter removal device has no holes or passages that could be misaligned, except for the entrance through which cats enter and exit. There is no mechanical shearing action. Even if the sensor malfunctions, the spherical tank assembly will begin to rotate while a cat is still inside, preventing the risk of cats getting trapped. This makes the entire device safe and reliable, fundamentally eliminating the risk of cats getting trapped, and avoiding problems such as significant increases in costs due to the addition of various safety measures and the increased likelihood of errors due to complex programming. In addition, the cat droppings fall directly into the collection compartment through the opening of the collection compartment, eliminating the need for a dedicated passageway, making cleaning easy and eliminating blind spots.Furthermore, there is no problem, as in the prior art, where the cat droppings do not enter the collection compartment smoothly due to imperfect alignment and overlap of the passageway openings caused by rotation errors, or where, if cat droppings are filled in or stuck near the passageway openings during use, the cat droppings are pushed out by the relatively rotating passageway openings and smeared all over, making cleaning impossible.

[0013] In some embodiments, the working chamber is located opposite the sorting chamber, the collection chamber is located on one side of the sorting chamber, and the working chamber is located near its highest position when the sorting chamber and / or the collection chamber are at their lowest position.

[0014] In this way, the working chamber and the sorting chamber are positioned relative to each other, and the collecting chamber is located on one side of the sorting chamber. When the spherical tank assembly rotates under the drive assembly until the sorting chamber is at its lowest position, the cat litter falls through the sieve holes into the sorting chamber, and all the cat feces remain outside the sorting chamber. The spherical tank assembly then rotates until the collecting chamber is at its lowest position, where the cat feces falls into the collecting chamber. When the spherical tank assembly then rotates until the working chamber is at its lowest position, the cat litter returns from the sorting chamber into the working chamber, and the spherical tank assembly stops rotating and waits for the next operation. By specifying the relative positions of the working chamber, sorting chamber, and collecting chamber, the spherical tank assembly rotates smoothly and can sequentially perform a series of operations: sieving, collecting, and storing cat feces, and returning the cat litter to its original position. This results in a good sieving effect, eliminates the need for a feces discharge structure, reduces the requirements for the drive mechanism, reduces costs, has a simple structure, and is highly stable. In addition, in the initial state, the collection chamber is located at the top of the spherical tank assembly, allowing the user to directly clean the collection chamber without having to squat, including replacing the collection chamber's garbage bag, removing discarded cat litter, etc. In some embodiments, one end of the collection chamber is pivotally attached to the working chamber and is arranged so that it can be flipped outward relative to the working chamber.

[0015] In this way, by pivoting the litter box to the working chamber, a litter bag can be placed in the litter box, and the user can simply flip the litter box outward relative to the working chamber to place or remove the litter bag, making it easy to clean up stored cat feces. The user can not only pour new cat litter through the working chamber's entrance, but also pour new cat litter into the working chamber through the corresponding opening after flipping the litter box outward. The user can operate the device while squatting or standing, providing a variety of operating methods.

[0016] In some embodiments, the opening of the collection compartment is provided with a collection compartment cover plate assembly arranged to selectively open and close the opening, and the mating surfaces of the collection compartment cover plate assembly and the opening are arranged to clamp the opening of a garbage bag and keep the garbage bag open.

[0017] In this way, by installing a litter box cover module, the opening can be selectively opened or closed, and the litter box is closed when cat feces collection is not required, preventing the release of cat feces odor and maintaining a fresh, hygienic, and clean room environment. The litter box cover assembly and the opening's mating surfaces clamp the opening of the garbage bag, providing a simple and stable fastening method. Furthermore, users can install garbage bags and replace them conveniently and quickly by simply removing the litter box cover assembly. When the spherical tank assembly rotates, the litter box revolves around the center of the spherical tank assembly, and the cat feces stored in the litter box are repositioned upside down during rotation and do not accumulate near the litter box cover assembly. This prevents the litter box's volume from being fully utilized or the occurrence of false volume reports, ensuring the automatic cat feces removal device operates normally. When the collection compartment is full and the cat feces in the work compartment cannot enter the collection compartment, the automatic cat feces cleaning device will stop automatically sorting the cat feces, but this will not affect the cat's normal use of the automatic cat feces cleaning device, and the cat can still enter the work compartment to defecate.

[0018] In some embodiments, the litter collection chamber cover plate assembly includes a base detachably connected to the opening and a cover plate pivotally attached at one end to the base, and when the litter collection chamber is at its lowest position, the cover plate opens due to its own gravity, allowing cat feces to fall into the litter collection chamber, and when the litter collection chamber is at its highest position, the cover plate returns to its closed position due to its own gravity, locking the cat feces inside the litter collection chamber.

[0019] In this way, the cover plate is opened and closed by utilizing its own gravity, and the opening can be selectively opened and closed, while at the same time greatly reducing costs, achieving mature technology and high stability.

[0020] In some embodiments, the toilet compartment cover plate assembly further includes a first magnet disposed at a free end of the cover plate and a second magnet disposed at a corresponding position on the base; During the process of the spherical tank assembly rotating from the initial position to the second position, the cover plate and the base are always guaranteed to be in a locked state, and when the spherical tank assembly returns to the initial position, the cover plate is re-hooked onto the base by its own gravity, and at this time, the first magnet and the second magnet are re-adsorbed to reinforce the locking force between the cover plate and the base.

[0021] In this way, as the spherical tank assembly rotates from the initial position to the second position, the cover plate always adheres to the base, preventing it from hanging freely under its own gravity and ensuring that the waste collection chamber remains closed until the spherical tank assembly rotates to the second position. As the spherical tank assembly rotates from the second position back to the initial position, the combined gravity of the cat feces and the cover plate exceeds the magnetic force of the two magnets, causing the cover plate to pivot open and the cat feces to fall into the waste collection chamber. When the spherical tank assembly returns to its initial position, the cover plate is re-attached to the base under its own gravity, and the two magnets are re-attached, further strengthening the locking force between the cover plate and the base.

[0022] In some embodiments, the automatic cat litter cleaning device further comprises a sensing device; The sensor is arranged to activate the drive unit when it detects that the cat has left the work chamber, and to drive the spherical tank assembly to rotate from an initial position, pass through a first position and then reach a second position until cat feces fall into the collection chamber.

[0023] In this way, by installing a detection device to detect whether a cat has entered the work chamber to defecate and whether the cat has left the work chamber, the detection device sends a signal to the drive assembly, which starts the drive assembly and rotates the spherical tank assembly from its initial position, first passing through the first position and then reaching the second position. As the spherical tank assembly rotates, the sorting chamber and the collection chamber pass through their lowest positions in turn and stop until all the cat feces have fallen into the collection chamber. This prevents the automatic cat feces cleaning device from being unintentionally activated when a cat is defecate, ensuring safety in use.

[0024] In some embodiments, the automatic cat litter cleaning device further includes a sand removal module, and when a user activates the sand removal module, the drive assembly is activated, and the spherical tank assembly is driven to rotate in the reverse direction from the initial position, first passing through the second position, then reaching the first position, and stopping until all the cat litter has fallen into the collection chamber.

[0025] Thus, by installing the litter removal module, the user activates the litter removal module, and after receiving a signal, the drive assembly rotates the spherical tank assembly in the reverse direction from the initial position, passing through the second position and then reaching the first position so that all the cat litter falls into the collection compartment. The spherical tank assembly continues to rotate and stops operating until it returns to the initial position. This allows for automatic collection of discarded cat litter, and the user only needs to clean the collection compartment or the trash bag inside the collection compartment after the litter removal operation is complete, which is convenient, quick, clean, and hygienic.

[0026] In some embodiments, the automatic cat litter cleaning device further includes a base, the spherical tank assembly is detachably mounted on the base and is capable of rotating about its own axis relative to the base, and the drive assembly includes a motor fixed to the base and a gear assembly having one end fixed to an output end of the motor and the other end selectively connected to the spherical tank assembly, and arranged to move the spherical tank assembly to rotate on its own axis under the drive of the motor.

[0027] In this way, the spherical tank assembly is mounted on the base and can be selectively separated from the base, so that when a user needs to clean it, they can simply lift the spherical tank assembly up to separate it from the base, making cleaning easy. Through the cooperation of the gear assembly and the motor, mature technology is used to drive the rotation of the spherical tank assembly, resulting in mature technology, simple structure, and low cost.

[0028] In some embodiments, the base further includes a plurality of rollers at one end remote from the gear assembly, the rollers supporting the spherical tank assembly when the spherical tank assembly is mounted on the base and simultaneously rotating about their own axes when the spherical tank assembly rotates.

[0029] In this way, by installing the rollers, support force is provided to the spherical tank assembly while reducing frictional resistance during rotation, allowing the spherical tank assembly to rotate stably and effortlessly, reducing mechanical wear, improving service life, and further improving the effectiveness of screening, collecting, and storing cat feces and returning cat litter to its original position.

[0030] Further features of the present disclosure will become apparent from the following description of exemplary embodiments with reference to the drawings. It should be understood that the contents of this disclosure are not intended to represent the gist or key features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will be readily apparent from the following description. [Brief explanation of the drawings]

[0031] The drawings in the specification, which form a part of this application, are used to aid in a further understanding of this application. The exemplary embodiments and the description thereof are used to interpret this application and do not constitute undue limitations on this application. [Figure 1] 1 is a perspective view of an automatic cat litter cleaning device according to an embodiment of the present disclosure; FIG. [Figure 2] 2 shows a schematic diagram of the automatic cat droppings cleaning device in FIG. 1 with the spherical tank assembly removed. [Figure 3] 2 shows a plan view of the automatic cat droppings cleaning device in FIG. 1. [Figure 4] 4 shows a schematic cross-sectional view taken along line AA in FIG. 3. [Figure 5] FIG. 5 is a partial enlarged view of part A in FIG. [Figure 6] 4 shows a cross-sectional view taken along line BB in FIG. 3. [Figure 7] 1 shows a schematic diagram of a spherical tank assembly in an initial position. [Figure 8] FIG. 8 is a partial enlarged view of part B in FIG. [Figure 9] 1 shows a schematic diagram of a spherical tank assembly in a first position. [Figure 10] 10A to 10C are schematic diagrams showing the process of rotation of the spherical tank assembly from a first position to a second position. [Figure 11] 10A to 10C are schematic diagrams showing the process of rotation of the spherical tank assembly from a first position to a second position. [Figure 12] 10A to 10C are schematic diagrams showing the process of rotation of the spherical tank assembly from a first position to a second position. [Figure 13] 1 shows a schematic diagram of the spherical tank assembly in a second position. [Figure 14] 10A to 10C are schematic diagrams showing the rotation process of the spherical tank assembly from the second position to the initial position. [Figure 15] 10A to 10C are schematic diagrams showing the rotation process of the spherical tank assembly from the second position to the initial position. [Figure 16] FIG. 10 is a schematic diagram of the spherical tank assembly returning to its initial position. [Figure 17] 1 shows a schematic diagram of the spherical tank assembly in the initial position in sand cleaning mode. [Figure 18] 10 shows a schematic diagram of the spherical tank assembly in a second position in a sand cleaning mode. [Figure 19] 1 shows a schematic diagram of the spherical tank assembly in a first position in a sand cleaning mode. [Figure 20] FIG. 10 is a schematic diagram showing the spherical tank assembly returning to its initial position in the sand cleaning mode. [Figure 21] FIG. 10 is a schematic diagram illustrating a case where a user removes a garbage bag from the waste collection compartment. [Figure 22] 1 shows a schematic diagram of the toilet compartment when the user has flipped the toilet compartment outward and removed the toilet compartment cover plate assembly.The same or similar reference numerals are used throughout the drawings to represent the same or similar elements. DETAILED DESCRIPTION OF THE INVENTION

[0032] In addition, the embodiments and features of the embodiments of the present application may be combined with each other if there is no conflict. The present application will be described in detail below in conjunction with the embodiments with reference to the drawings.

[0033] In the prior art, drum-type cat litter cleaners based on the gravity screening principle all have a litter collection compartment attached to the drum, which does not rotate with the drum when it rotates. In contrast, one technique involves installing the litter collection compartment within the base space. This design increases the thickness of the base, which requires the base to reserve a certain amount of space, increasing the height of the base, further increasing the height and difficulty for cats to enter the drum, making it inconvenient for short cats in particular. Furthermore, because the drum is located high, cats may jump when leaving the drum, carrying the cat litter inside the drum and soiling the ground. Therefore, some manufacturers add a cat litter collector at the cat's entry and exit point to collect the carried-out cat litter, or add a ramp at the entry and exit point to facilitate cat entry and exit. However, this increases manufacturing costs and the installation area of ​​the cat litter cleaner. Furthermore, because the litter collection compartment is located at the bottom, users must squat down to operate the litter collection compartment, which is inconvenient for tall or heavy users.

[0034] In addition, the collection compartment may be installed behind the drum, which significantly increases the overall front-to-rear length of the cat feces cleaning device, increasing the footprint of the device, making it unsuitable for use by users in small rooms and resulting in low space utilization. Furthermore, each time a user wants to clean the collection compartment, they must move or adjust the position of the cat feces cleaning device to remove the collection compartment located behind the drum, which is inconvenient and takes time and effort.

[0035] Furthermore, prior art cat litter cleaners require the addition of a dedicated passageway to remove cat litter from the drum into the collection compartment. This requires high structural alignment accuracy during the removal process, increasing the complexity of the structure. If the passageway is not perfectly aligned, the cat litter will contaminate the entire removal channel, increasing the user's cleaning workload. Furthermore, cat litter in the collection compartment is likely to accumulate at the entrance to the passageway, potentially triggering the premature detection signal indicating the collection compartment is full. When the collection compartment is heavily loaded with cat litter, the cat litter may be carried into the gap between the drum and the base while the drum is rotating, further increasing the difficulty and workload of cleaning. On the other hand, if a dedicated passageway is installed between the drum and the collection compartment, the passageway moves relative to the drum as it rotates, creating a shearing motion, which can lead to cat entrapment accidents in the cat litter cleaner. To prevent such cat entrapment accidents, some manufacturers install multiple safety sensors to determine whether a cat is present in the drum, while others install emergency stop sensors. These measures not only increase production costs but also increase the complexity of the program, and the more complex the program, the more prone it is to errors. For example, if the device detects a risk of a cat getting trapped, it will activate an emergency stop and then be unable to determine whether the cat has escaped. If it is reset at this time, the injury to the cat may become more severe, and if it is not reset, the device will become unusable. This judgment itself can also be a system malfunction, and if it is activated incorrectly, the device will become unusable, which means that if the user goes out to the office or on a business trip, the cat will be unable to use the device for a long time.

[0036] Embodiments of the present disclosure provide an automatic cat litter cleaning device 100 that solves or at least partially solves the above and other potential problems. Several exemplary embodiments are described below with reference to FIGS. 1-22.

[0037] Generally, as shown in FIGS. 1 to 7 , according to the embodiments described herein, the automatic cat litter cleaning device 100 disclosed herein includes a spherical tank assembly 1, a drive assembly 2, and a base 3. The spherical tank assembly 1 is configured to include at least three spaces: a working chamber 11 for piling cat litter 112 and allowing cats to defecate; a sorting chamber 12 for screening the cat litter 112 and cat litter 122; and a collection chamber 13 for storing the cat litter 122. The spherical tank assembly 1 is a device whose outer circumferential contour is in the form of a rotating body, combining the working chamber 11, sorting chamber 12, and collection chamber 13. The drive assembly 2 is configured to rotate the spherical tank assembly 1 about its axis. The sorting chamber 12 has a surface facing the center of the spherical tank assembly 1 with multiple sieve holes 121. As shown in FIG. 1 , the spherical tank assembly 1 is currently in its initial position, with the working chamber 11 at its lowest position. As shown in Figures 7 and 9, when the spherical tank assembly 1 rotates from the initial position to the first position, the sorting chamber 12 is located at the lowest position of the spherical tank assembly 1, and the cat litter 112 passes through the sieve holes 121 and falls into the sorting chamber 12, while the cat droppings 122, which are larger in size than the sieve holes 121, remain in the working chamber 11. As shown in Figures 10 to 13, when the spherical tank assembly 1 rotates to the second position, the feces collection chamber 13 is located at the lowest position of the spherical tank assembly 1, and the cat droppings 122 fall into the feces collection chamber 13. As shown in Figure 2, the spherical tank assembly 1 is detachably mounted on the base 3 and is capable of rotating about its own axis relative to the base 3.

[0038] According to the embodiment of the present disclosure, the spherical tank assembly 1 is divided into at least three spaces, namely, the working chamber 11, the sorting chamber 12, and the collecting chamber 13. This allows the screening, collection, and storage of cat feces 122 to be performed within the spherical tank assembly 1. This results in a simple and compact overall structure, a small device volume, portability, and high space utilization. Furthermore, the cat feces 122 always remain within the spherical tank assembly 1, preventing contamination of other components. This reduces the amount of work required for cleaning and simplifies cleaning. The spherical shape of the spherical tank assembly 1 maximizes the space utilization of the spherical tank assembly 1 and maximizes the space of the working chamber 11, making it easier for cats to enter the working chamber 11 to defecate. The spherical tank assembly 1 is mounted on a base 3 and can be selectively separated from the base 3. When the user wants to clean the spherical tank assembly 1, they simply lift it up to separate it from the base 3, making cleaning easier.

[0039] The spherical tank assembly 1 described above may have a spherical structure, or may have other outer peripheral contours such as an oval sphere, a cylinder, or a conical prism, forming a body of revolution. It should be understood that any structure capable of rotating around its own axis under the driving force of an external force falls within the scope of protection of the present disclosure. The spherical tank assembly 1 may be formed by geometrically connecting the working chamber 11, the sorting chamber 12, and the collection chamber 13, or by installing the sorting chamber 12 and the collection chamber 13 within the working chamber 11, or by installing one of the sorting chamber 12 and the collection chamber 13 within the working chamber 11 and then connecting it to the other. The connection may be a splicing connection, a hinged connection, or other connection such as an engagement connection. The three chambers may be partially hinged, partially joined, or partially integrated. Alternatively, the entire assembly may be formed using any of the above-mentioned connection methods. As long as the three chambers are combined into a single spherical tank assembly 1, all of these structures fall within the scope of protection of the present disclosure. The sieve holes 121 may be arranged regularly or irregularly. The surface of the sorting chamber 12 facing the center of the spherical tank assembly 1 may be completely covered with the sieve holes 121, or may be partially uncovered by the sieve holes 121. Any distribution position of the sieve holes 121 falls within the scope of protection of the present disclosure as long as all of the cat litter 112 can fall into the sieve holes 12 when the sorting chamber 12 is at its lowest position and all of the cat litter 112 can return from the sorting chamber 12 to the working chamber 11 when the working chamber 11 is at its lowest position.

[0040] In some embodiments, as shown in Figure 1, an entrance 111 is provided in the axial direction of the working chamber 11, which is configured to allow the cat to enter and exit the working chamber 11 to perform excretion activities. As shown in Figure 7, the collection chamber 13 is provided with an opening 131. The opening 131 is positioned so that cat feces 122 can enter the collection chamber 13.

[0041] In this embodiment, the working chamber 11, sorting chamber 12, and collection chamber 13 are all integrated into the spherical tank assembly 1, so that the spherical tank assembly 1 is positioned so that it fits almost flush with the ground, and the height of the entrance to the working chamber 11 is no more than 10 cm, which is advantageous for older or relatively overweight cats to enter and exit. In addition, because the height of the entrance 111 is low, cats do not need to jump to enter and exit, fundamentally solving the problem of large amounts of cat litter 112 being carried away in the prior art. The entrance 111 through which the cat enters the working chamber 11 always remains stationary relative to the opening 131 of the collection chamber 13, and the collection chamber 13 always moves together with the spherical tank assembly 1. As a result, the entire automatic cat litter cleaning device 100 does not have any holes or passages that could cause misalignment, except for the entrance 111 through which the cat enters and exits. Furthermore, since there is no mechanical shearing action, even if the sensor 4 fails, the spherical tank assembly 1 will begin to rotate when a cat is inside, preventing the cat from getting trapped. This makes the entire device safe and reliable, fundamentally eliminating the possibility of a cat getting trapped and avoiding problems such as significant increases in costs due to the addition of various safety measures and errors due to complex programming. Furthermore, the cat feces 122 fall directly into the collection chamber 13 through the opening 131, eliminating the need for a dedicated passageway, making cleaning easy and eliminating blind spots. Furthermore, there is no problem, as in the prior art, where imperfect alignment and overlap of the passageway openings due to rotational errors prevent the cat feces from smoothly entering the collection chamber, or where, if cat feces are filled or stuck near the passageway opening during use, the cat feces will shift relative to the opening, be pushed out by the relatively rotating passageway opening, and smeared all over the place, making cleaning impossible.

[0042] In some embodiments, as shown in Figure 7, the work chamber 11 is positioned opposite the sorting chamber 12, and the collection chamber 13 is located on one side of the sorting chamber 12. As shown in Figure 9, when the sorting chamber 12 is in its lowest position, the collection chamber 13 is located at the secondary low point position, and the work chamber 11 is located near the highest point position. As shown in Figure 13, when the collection chamber 13 is in its lowest position, the sorting chamber 12 is located at the secondary low point position, and the work chamber 11 is located near the highest point position.

[0043] In this embodiment, the working chamber 11 and the sorting chamber 12 are provided opposite each other, and the feces collecting chamber 13 is provided on one side of the sorting chamber 12. As a result, when the spherical tank assembly 1 rotates under the drive of the drive assembly 2 until the sorting chamber 12 is at its lowest position, the cat litter 112 falls into the sorting chamber 12 through the sieve holes 121, but all of the cat feces 122 remains outside the sorting chamber 12. Next, when the spherical tank assembly 1 rotates until the collecting chamber 13 is at its lowest position, the cat feces 122 falls into the collecting chamber 13. Next, when the spherical tank assembly 1 rotates until the working chamber 11 is at its lowest position, the cat litter 112 returns from the sorting chamber 12 into the working chamber 11, the spherical tank assembly 1 stops rotating, and waits for the next operation. By specifying the relative positions of the working chamber 11, sorting chamber 12, and collection chamber 13, a series of operations such as sieving, collecting, and storing cat feces 122 and returning the cat litter 112 to its original position can be performed smoothly and sequentially during the rotation of the spherical tank assembly 1, resulting in good sieving effect, elimination of the feces discharge structure, reduced requirements for the drive mechanism, reduced costs, a simple structure, and high stability. Also, in the initial state, the collection chamber 13 is located at the top of the spherical tank assembly 1, allowing the user to clean the collection chamber 13 directly without having to squat down, including replacing the garbage bag 132 and removing discarded cat litter 112 from the collection chamber 13.

[0044] In some embodiments, as shown in Figures 21 and 22, one end of the waste collection chamber 13 is connected to the working chamber 11 by a hinge and is arranged so that it can be flipped outward relative to the working chamber 11.

[0045] In this embodiment, by connecting the waste collection chamber 13 to the working chamber 11 with a hinge, a waste bag 132 can be set in the waste collection chamber 13, and the user can set or remove the waste bag 132 after inverting the waste collection chamber 13 outward relative to the working chamber 11, making it easy to organize the stored cat feces 122. The user can not only inject new cat litter through the entrance 111 of the working chamber 11, but also inject new cat litter into the working chamber 11 through the corresponding opening after inverting the waste collection chamber 13 outward. The user can operate the device while squatting or standing, providing a variety of operation methods.

[0046] In some embodiments, as shown in FIGS. 7, 8, and 21, a collection chamber cover plate assembly 133 configured to selectively open and close the opening 131 is disposed in the opening 131 of the collection chamber 13. The mating surfaces of the collection chamber cover plate assembly 133 and the opening 131 are positioned to clamp the opening of the waste bag 132 and keep the waste bag 132 open. Here, the collection chamber cover plate assembly 133 includes a base 1331 detachably connected to the opening 131 and a cover plate 1332 having one end connected to the base 1331 by a hinge. When the collection chamber 13 is in its lowest position, the cover plate 1332 is positioned to be in an open state due to its own gravity, as shown in FIG. 13. At this time, cat feces 122 fall into the collection chamber 13. When the collection chamber 13 is in its highest position, the cover plate 1332 returns to its off state due to its own gravity, as shown in FIG. 16. At this time, the cat droppings 122 are locked in the droppings collection room 13.

[0047] In this embodiment, by installing the litter box cover plate assembly 133 and selectively opening or closing the opening 131, the litter box 13 is closed when there is no need to collect cat feces 122, preventing the release of the unpleasant odor of cat feces 122 and maintaining a fresh, hygienic, and clean environment. The cover plate 1332 opens and closes using its own gravity, allowing the selective opening and closing of the opening 131 while significantly reducing costs, employing mature technology, and providing high stability. The opening of the litter box cover plate assembly 133 and the opening 131 are clamped through the mating surfaces, providing a simple and stable fastening method. Furthermore, the user simply removes the litter box cover plate assembly 133 to install the litter bag 132 or replace it with a new one, which is convenient and quick. When the spherical tank assembly 1 rotates, the cat feces collection chamber 13 revolves around the center of the spherical tank assembly 1, and the cat feces 122 stored in the cat feces collection chamber 13 is rearranged upside down during rotation and does not accumulate near the cat feces collection chamber cover plate assembly 133, preventing the volume of the cat feces collection chamber 13 from being fully utilized or causing false capacity reporting, and ensuring the normal operation of the automatic cat feces cleaning device 100. When the cat feces collection chamber 13 becomes full and the cat feces 122 in the working chamber 11 can no longer enter the cat feces collection chamber 13, the automatic cat feces cleaning device 100 stops automatically sorting the cat feces 122, but this does not affect the normal use of the automatic cat feces cleaning device 100 and the cat can still enter the working chamber 11 to defecate.

[0048] The above-mentioned waste collection chamber 13 may be connected to the working chamber 11 by a hinge or may be engaged with the working chamber 11, and as long as the connection between the two is detachable, either is within the scope of protection of the present disclosure. The trash bag 132 may be attached to the base 1331 or to the opening 131, and as long as the open end of the trash bag 132 is fixed between the opening 131 and the base 1331 when the base 1331 is connected to the opening 131, the open end of the trash bag 132 is fixed, and either is within the scope of protection of the present disclosure. The configuration of the waste collection chamber cover plate assembly 133 is not limited to the configuration of the cover plate 1332 and the base 1331, and may be other configurations in which a motor drives a damper to expand and contract to selectively open and close the opening 131, or to achieve a similar function, and all of these structures are within the scope of protection of the present disclosure.

[0049] In some embodiments, as shown in Figures 7 to 16, the toilet collection compartment cover plate assembly 133 further includes a first magnet 1333 provided at the free end of the cover plate 1332 and a second magnet 1334 provided at a corresponding position on the base 1331. This ensures that the cover plate 1332 and the base 1331 are always locked together when the spherical tank assembly 1 rotates from the initial position to the second position, and when the spherical tank assembly 1 returns to the initial position, the cover plate 1332 is re-hooked to the base 1331 by its own gravity. At this time, the first magnet 1333 and the second magnet 1334 are re-attached to reinforce the locking force between the cover plate 1332 and the base 1331. In this embodiment, when the spherical tank assembly 1 rotates from the initial position to the second position, the cover plate 1332 is always attracted to the base 1331 and does not hang freely due to the effect of its own gravity, ensuring that the waste collection chamber 13 is continuously closed until the spherical tank assembly 1 rotates to the second position. When the spherical tank assembly 1 rotates from the second position back to the initial position, the combined gravity of the cat feces 122 and the cover plate 1332 itself exceeds the magnetic force of the two magnets, causing the cover plate 1332 to pivot open and the cat feces 122 to fall into the waste collection chamber 13. When the spherical tank assembly 1 returns to the initial position, the cover plate 1332 is again hooked to the base 1331 due to its own gravity, and the two magnets are re-attached, further strengthening the locking force between the cover plate 1332 and the base 1331.

[0050] In some embodiments, as shown in Figure 4, the automatic cat litter cleaning device further includes a sensor 4. The sensor 4 is arranged to activate the drive unit 2 when it detects that the cat has left the working chamber 11, and drive the spherical tank assembly 1 to rotate from the initial position, pass through the first position, and then reach the second position until the cat litter 122 falls into the collection chamber 13.

[0051] In this embodiment, the detector 4 is installed to detect whether a cat has entered the work chamber 11 to defecate, and to detect whether the cat has left the work chamber 11. When the detector 4 detects that a cat has left the work chamber 11, it sends a signal to the drive unit 2, which starts the drive unit 2 and drives the spherical tank assembly 1 to rotate the spherical tank assembly 1 from its initial position, passing through the first position and then reaching the second position. As the spherical tank assembly 1 rotates, the sorting chamber 12 and the collection chamber 13 sequentially pass through their lowest positions and stop until all the cat feces 122 have fallen into the collection chamber 13. This prevents the automatic cat feces cleaning device 100 from unintentionally starting up when a cat is defecate, ensuring safety in use.

[0052] The cat feces cleaning workflow is as follows. As shown in FIG. 7, the spherical tank assembly 1 is in the initial position, and the working chamber 11 is at its lowest position, making it convenient for the cat to enter the working chamber 11 through the entrance 111 to defecate. When the cat enters and then exits the working chamber 11, the sensor 4 detects the cat's exit and sends a signal to the drive unit 2, which activates the drive unit 2 and drives the spherical tank assembly 1 to rotate. When the spherical tank assembly 1 rotates from the initial position to the first position, as shown in FIG. 9, the sorting chamber 12 is at its lowest position, and the cat litter 112 falls into the sorting chamber 12 through the sieve holes 121, while the cat feces 122 remains in the working chamber 11. When the spherical tank assembly 1 rotates from the first position to the second position, as shown in Figures 10 to 13, the feces collection chamber 13 is at its lowest position, the cover plate 1332 is in an open state, and the cat feces 122 falls into the feces collection chamber 13 through the opening 131. When the spherical tank assembly 1 rotates from the second position to the first position, as shown in Figures 14 and 15, all of the cat feces 122 that have accumulated on or near the cover plate 1332 fall into the feces collection chamber 13 due to the action of its own gravity. When the spherical tank assembly 1 continues to rotate and returns to the initial position, as shown in Figure 16, the working chamber 11 is at its lowest position, and all of the cat litter 112 returns into the working chamber 11 through the sieve holes 1211 of the sorting chamber 12, the drive assembly 2 stops operating, and the inlet 111 returns to its initial position, making it easy for cats to enter the working chamber 11 and perform excretion activities.

[0053] The sensing device 4 may be one or more of a microwave radar, a pyroelectric infrared sensor, a thermopile infrared sensor, an infrared intrusion detector, an optical sensor, etc. The rotational movement of the spherical tank assembly 1 to complete one cleaning of cat feces 122 is merely exemplary. The spherical tank assembly 1 may rotate 360° counterclockwise, 360° clockwise, 270° counterclockwise and then clockwise, or 270° clockwise and then 270° clockwise. The rotation direction, angle, and number of rotations of the spherical tank assembly 1 depend on the relative positions of the working chamber 11, the sorting chamber 12, and the collecting chamber 13. Any rotational method that can achieve a series of operations of sorting, collecting, and storing cat feces 122 and returning the cat litter 112 to its original position by the rotational movement of the spherical tank assembly 1 falls within the scope of protection of the present disclosure.

[0054] In some embodiments, as shown in Figure 1, the automatic cat litter cleaning device 100 further includes a litter removal module 5. When the user activates the litter removal module 5, the drive assembly 2 is activated, and the spherical tank assembly 1 is driven to rotate in the reverse direction from the initial position, first passing through the second position, then reaching the first position, and stopping until all the cat litter 112 has fallen into the litter collection chamber 13.

[0055] In this embodiment, by installing the sand removal module 5, the user activates the sand removal module 5, and after receiving a signal, the drive assembly 2 rotates the spherical tank assembly 1 in the reverse direction from the initial position, first passing through the second position and then reaching the first position, driving until all the cat litter 112 falls into the collection compartment 13, and the spherical tank assembly 1 continues to rotate and stops until it returns to the initial position. In this way, the collection of discarded cat litter 112 can be achieved automatically, and the user only needs to clean the collection compartment 13 or the trash bag 132 in the collection compartment 13 after the litter cleaning operation is completed, which is convenient, quick, clean and hygienic.

[0056] The specific sand cleaning workflow is as follows: As shown in FIG. 17, the spherical tank assembly 1 is in the initial position, with the working chamber 11 at its lowest position. When the cat litter 112 needs to be replaced, the user activates the sand removal module 5, and the drive assembly 2 receives a signal and drives the spherical tank assembly 1 to rotate in the reverse direction. When the spherical tank assembly 1 rotates in the reverse direction from the initial position to the second position, the waste collection chamber 13 is at its lowest position, as shown in FIG. 18, and the cat litter 112 falls into the waste collection chamber 13 through the opening 131. When the spherical tank assembly 1 continues to rotate and reaches the first position, all of the cat litter 112 remaining on or near the cover plate 1332 falls into the waste collection chamber 13 due to its own gravity, as shown in FIG. 19. When the spherical tank assembly 1 rotates until it returns to its initial position, as shown in Figure 20, the working chamber 11 is at its lowest position, the drive assembly 2 stops operating, the entrance 111 returns to its initial position, and the user can remove the cat litter 112 from the waste collection chamber 13 by inverting the waste collection chamber 13.

[0057] The sand removal module 5 may be provided on a button or touch key of the automatic cat litter cleaning device 100, or may be operated by a remote control module such as Bluetooth (registered trademark), Wi-Fi, or a mobile phone app. Any module that can transmit a sand cleaning signal to the drive assembly 2 falls within the scope of protection of the present disclosure. The spherical tank assembly 1 may rotate clockwise, counterclockwise, or alternately rotate clockwise and counterclockwise, or may rotate once or multiple times. Any rotation method that can collect all of the cat litter 112 in the collection chamber 13 falls within the scope of protection of the present disclosure.

[0058] In some embodiments, as shown in FIG. 4 , the drive assembly 2 includes a motor 22 fixed to the base 3 and a gear assembly 21 having one end fixed to the output end of the motor 22 and the other end selectively connected to the spherical tank assembly 1, and configured to rotate the spherical tank assembly 1 on its axis under the driving force of the motor 22. As shown in FIG. 4 , the gear assembly 21 includes a drive gear 211, a first driven gear 212, and a second driven gear 213. Here, the first driven gear 212 is composed of a coaxial large gear 2121 and a pinion gear 2122 integrally provided. One end of the drive gear 211 is connected to the output end of the motor 22, and the other end meshes with the large gear 2121 of the first driven gear 212. The pinion gear 2122 of the first driven gear 212 selectively meshes with the second driven gear 213. The second driven gear 213 is fixed to the spherical tank assembly 1. When the motor 22 drives the drive gear 211 to rotate, the drive gear 211 drives the large gear 2121 of the first driven gear 212 to rotate, and since the pinion gear 2122 of the first driven gear 212 is coaxial with the large gear 2121, they rotate simultaneously, further moving and rotating the second gear 213, thereby rotating the spherical tank assembly 1. When the user needs to clean the spherical tank assembly 1, they can simply lift the spherical tank assembly 1 and move the second driven gear 213 away from the pinion gear 2122 of the first driven gear 212 to separate the spherical tank assembly 1 from the base 3.

[0059] In this embodiment, the gear assembly 21 and the motor 22 cooperate to drive the spherical tank assembly 1 to rotate on its own axis, utilizing mature technology, which is technologically mature, has a simple structure, and is low cost.

[0060] The above-mentioned drive assembly 2 is merely exemplary and may be liquid-driven, air-driven, or manually driven. Any drive mechanism that can drive the spherical tank assembly 1 to rotate on its axis falls within the scope of protection of the present disclosure. The number and arrangement of gears in the above-mentioned gear assembly 21 are merely exemplary. A motor may directly drive a single gear, which in turn drives the spherical tank assembly 1 to rotate on its axis. Any gear structure that can transmit the power of the motor 22 to the spherical tank assembly 1 falls within the scope of protection of the present disclosure. The above-mentioned spherical tank assembly 1 and base 3 may be provided with a corresponding stopper structure to facilitate engagement between the second driven gear 213 and the pinion gear 2122 when the user returns the spherical tank assembly 1 to the base 3 after cleaning.

[0061] In some embodiments, as shown in Figures 4 to 6, several rollers 31 are further provided on one end of the base 3 away from the gear assembly 21, and the rollers 31 support the spherical tank assembly 1 when the spherical tank assembly 1 is mounted on the base 3, and are arranged so that when the spherical tank assembly 1 rotates, the rollers 31 simultaneously rotate around their own axes.

[0062] In this embodiment, the rollers 31 are installed to provide support to the spherical tank assembly 1 and reduce frictional resistance during rotation, allowing the spherical tank assembly 1 to rotate stably and with less effort, reducing mechanical wear and improving the service life, and further improving the effectiveness of screening, collecting, and storing cat droppings 122 and returning the cat litter 112 to its original position.

[0063] It should be noted that the terms used herein are not intended to limit the exemplary embodiments of the present application, but are used only to describe particular embodiments. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the use of the terms "comprises" and / or "comprises" herein indicates the presence of features, steps, operations, elements, components, and / or combinations thereof.

[0064] Unless otherwise specified, the relative arrangement of components and steps, numerical expressions, and values ​​described in these examples do not limit the scope of the present application. It should also be understood that, for ease of explanation, the dimensions of the various parts shown in the drawings are not drawn to scale. Techniques, methods, and apparatus known to those of ordinary skill in the relevant arts may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of the specification granted herein. In all examples shown and discussed herein, any specific values ​​should be construed as merely illustrative, not limiting. Thus, other examples of the illustrative embodiments may have different values. Since like reference numerals and letters represent similar items in subsequent figures, once a term is defined in a figure, it need not be further discussed in subsequent figures.

[0065] In the description of this application, the orientations or positional relationships indicated by directional terms (such as "front, rear, up, down, left, right," "lateral, longitudinal, vertical, horizontal," "top, bottom," etc.) are generally orientations or positional relationships based on the drawings and are intended solely to facilitate and simplify the description of this application. Unless otherwise stated, these directional terms do not indicate or imply that a specified device or element must have a particular orientation or be configured and operate in a particular orientation, and therefore cannot be construed as a limitation on the scope of protection of this application. The directional terms "inside, outside" refer to the inside and outside of the contour of each part itself.

[0066] For ease of description, spatially relative terms such as "above," "above," "on top of," or "on top of" may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. Spatially relative terms are intended to encompass different orientations of a device during use or operation other than the orientation depicted in the figures. For example, if a device in the drawings is inverted, a device described as "above other devices or structures" or "on top of other devices or structures" would then be defined as "below other devices or structures" or "below other devices or structures." Thus, the exemplary term "above" can encompass two orientations: "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or at other orientations). Spatially relative descriptions used herein are correspondingly described.

[0067] Furthermore, the use of terms such as "first" and "second" to limit parts is merely to make it easier to distinguish the relevant parts, and unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present application.

[0068] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and those skilled in the art can make various modifications and variations to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic cat feces cleaning device, a spherical tank assembly (1) arranged to include at least three spaces, namely, a working chamber (11) for piling up cat litter and for cat excretion activities, a sorting chamber (12) for sorting cat litter and cat feces, and a collection chamber (13) for collecting cat feces; a drive assembly (2) arranged to drive the spherical tank assembly (1) into rotational motion, The surface of the sorting chamber (12) facing the center of the spherical tank assembly (1) is provided with a plurality of sieve holes (121), The working chamber (11) is provided with an entrance (111) configured to allow cats to enter and exit the working chamber (11), and the collection chamber (13) is provided with an opening (131) to allow cat feces to enter the collection chamber (13); The spherical tank assembly (1) is a device in which the working chamber (11), the sorting chamber (12), and the waste collection chamber (13) are jointly combined, and the outer circumferential contour thereof is in the form of a body of revolution, and the working chamber, the sorting chamber, and the waste collection chamber are arranged in sequence around the axial direction of the working chamber; When the spherical tank assembly (1) is in its initial position, the working chamber (11) is at the lowest position of the spherical tank assembly (1), and when the spherical tank assembly (1) rotates from the initial position to the first position around the axial direction of the working chamber (11), the sorting chamber (12) is at the lowest position of the spherical tank assembly (1), and the cat litter falls into the sorting chamber (12) through the sieve holes (121), while the cat feces, which are larger in size than the sieve holes (121), remain in the working chamber (11); When the spherical tank assembly (1) rotates around the axis of the working chamber (11) to a second position, the collection chamber (13) is located at the lowest position of the spherical tank assembly (1), and the cat feces falls into the collection chamber (13); An automatic cat feces cleaning device characterized in that an opening (131) of the collection chamber (13) is provided with a collection chamber cover plate assembly (133) arranged to selectively open and close the opening (131).

2. The working chamber (11) is provided opposite the sorting chamber (12), and the collecting chamber (13) is located on one side of the sorting chamber (12), When the sorting chamber (12) and / or the collecting chamber (13) are at their lowest positions, the working chamber (11) is located near their highest positions; 2. The automatic cat droppings cleaning device according to claim 1, wherein the inlet (111) is provided in the axial direction of the working chamber (11).

3. The automatic cat feces cleaning device according to claim 1, characterized in that one end of the feces collection chamber (13) is pivotally attached to the working chamber (11) and is arranged so as to be reversible outward relative to the working chamber (11).

4. An automatic cat droppings cleaning device as described in Claim 1, characterized in that the attachment mating surfaces between the toilet collection chamber cover plate assembly (133) and the opening (131) are positioned so as to clamp the opening of the garbage bag (132) and keep the garbage bag (132) open.

5. The toilet compartment cover plate assembly (133) includes a base (1331) detachably connected to the opening (131), and a cover plate (1332) one end of which is pivotally attached to the base (1331), The automatic cat droppings cleaning device of claim 4, characterized in that when the collection chamber (13) is at its lowest position, the cover plate (1332) is in an open state due to its own gravity, at which time cat droppings fall into the collection chamber (13), and when the collection chamber (13) is at its highest position, the cover plate (1332) is returned to a closed state due to its own gravity, at which time the cat droppings are locked inside the collection chamber (13).

6. The toilet compartment cover plate assembly (133) further includes a first magnet (1333) provided at a free end of the cover plate (1332) and a second magnet (1334) provided at a corresponding position on the base (1331); The automatic cat droppings cleaning device of claim 5, characterized in that during the process of the spherical tank assembly (1) rotating from the initial position to the second position, the cover plate (1332) and the base (1331) are always ensured to be in a locked state, and when the spherical tank assembly (1) returns to the initial position, the cover plate (1332) is newly hooked to the base (1331) by its own gravity, and at this time, the first magnet (1333) and the second magnet (1334) are re-adsorbed to reinforce the locking force between the cover plate (1332) and the base (1331).

7. The automatic cat litter cleaning device further includes a sensing device (4), The automatic cat droppings cleaning device according to claim 1, characterized in that the sensor (4) is arranged to activate the drive assembly (2) when it detects that the cat has left the working chamber (11), and to drive the spherical tank assembly (1) to rotate from its initial position, pass through a first position, and then reach a second position until the cat droppings fall into the collection chamber (13).

8. The automatic cat litter cleaning device of claim 1 further includes a sand removal module (5), and when a user activates the sand removal module (5), the drive assembly (2) is activated, and the spherical tank assembly (1) is driven to rotate in the reverse direction from the initial position, first passing through the second position, then reaching the first position, and stopping until all the cat litter has fallen into the collection chamber (13).

9. The automatic cat litter cleaning device further includes a base (3), The spherical tank assembly (1) is detachably mounted on the base (3) and is capable of rotating about its own axis relative to the base (3); The automatic cat droppings cleaning device of claim 1, characterized in that the drive assembly (2) includes a motor (22) fixed to the base (3), and a gear assembly (21) having one end fixed to the output end of the motor (22) and the other end selectively connected to the spherical tank assembly (1), and arranged to move the spherical tank assembly (1) to rotate under the driving of the motor (22).

10. The base (3) further includes a plurality of rollers (31) at one end thereof remote from the gear assembly (21); The automatic cat droppings cleaning device according to claim 9, characterized in that, when the spherical tank assembly (1) is mounted on the base (3), the roller (31) supports the spherical tank assembly (1) and simultaneously rotates around its own axis when the spherical tank assembly (1) rotates.

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