A cat litter box convenient to clean
By integrating modular design and innovating with a rotating axis sensing window, the problems of complex structure and poor waterproof performance of smart pet litter boxes have been solved, resulting in a pet litter box that is easy to clean and maintain, improving the user experience and the durability of electronic components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 深圳市前海远为科技有限公司
- Filing Date
- 2026-04-24
- Publication Date
- 2026-06-02
AI Technical Summary
Existing smart litter boxes for pets have complex structures, are difficult to clean, have poor waterproof performance, and their electronic components are easily damaged and have high maintenance costs.
Adopting an integrated modular design, the electronic components such as motors, circuit boards, and sensors are encapsulated in a detachable core module. The rollers and base are mostly non-electric plastic structures. The core module can be quickly assembled and disassembled through plug-in and snap-fit structures. The rotating shaft and limiting components simplify the structure, and the rotating shaft forms a sensing window that does not require penetrating the roller wall for detection.
It achieves water-washable areas of over 90% of the litter box, extending the lifespan of electronic components, reducing maintenance costs, simplifying the structure, and improving cleaning efficiency and user experience.
Smart Images
Figure CN122123326A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pet supplies technology, specifically to a litter box for cats that is easy to clean. Background Technology
[0002] Smart litter boxes are now an essential pet product for pet-owning families. Through a clever rolling structure, they automatically help pet owners clean up pet feces and urine, solving the problem of pets' toileting at home and greatly facilitating the daily cleaning work of pet owners.
[0003] However, currently available smart litter boxes for cats have the following technical flaws:
[0004] First, the complex structure makes cleaning difficult. Existing smart litter boxes have their motors, circuit boards, sensors, and other electronic components scattered across multiple locations, including the base, roller, and lid, resulting in a complex internal structure and numerous hard-to-clean areas. Users often find it difficult to thoroughly clean after use, and residual litter, feces, and urine can easily breed bacteria and produce odors, affecting pet health and the home environment.
[0005] Secondly, they have poor waterproofing and cannot be washed. Because existing smart litter boxes have a wide distribution of electronic components, achieving complete waterproofing requires sealing all electronic areas, a highly complex and costly process. Therefore, currently available smart litter boxes can only have their rollers rinsed; the base and other components cannot be washed and can only be cleaned by wiping, resulting in poor cleaning effectiveness and making it difficult to remove internal dirt.
[0006] Third, electronic components are easily damaged and have high maintenance costs. In existing technologies, electronic components are highly integrated with the main structure of the litter box, making disassembly difficult. Once a sensor or circuit board is damaged, the entire box needs to be disassembled and repaired, resulting in high maintenance costs and long maintenance cycles.
[0007] Therefore, there is an urgent need for a design solution for a pet cat litter box that is fully washable, has a simple structure, and is easy to maintain. Summary of the Invention
[0008] The purpose of this invention is to provide a pet litter box that is easy to clean, so as to solve the technical problems of existing smart litter boxes having complex internal structures, being non-waterproof, and being unable to be completely cleaned with water.
[0009] The technical solution of this invention is as follows:
[0010] An easy-to-clean pet litter box includes:
[0011] The base has a roller receiving groove on its top;
[0012] A roller, which is rotatably disposed within a roller receiving groove, has an inlet / outlet at its front end for pets to enter and exit.
[0013] The movement module is detachably installed on one side of the base. The movement module includes a movement housing, a motor disposed in the movement housing, and a control component electrically connected to the motor. The motor is connected to one side of the roller through a gear transmission mechanism to drive the roller to rotate around its own axis.
[0014] As a preferred embodiment of the present invention, the base has a movement mounting slot adapted to the movement module on the side near the movement module, the movement module is inserted into the movement mounting slot and is limited and fixed by a snap-fit structure.
[0015] As a preferred embodiment of the present invention, a rotating shaft is provided on the side of the roller near the movement module, and a rotating groove is provided on the top of the movement housing near the roller. A rotating limiting member is hinged to the top of the rotating groove, and a snap-fit member is provided on the top of the movement mounting groove. The snap-fit member engages with the non-hinged end of the rotating limiting member. The rotating shaft is limited to the rotation space enclosed by the rotating limiting member and the rotating groove, and can rotate around its own axis within the rotation space.
[0016] As a preferred embodiment of the present invention, an annular rotation limiting groove is formed on the outer circumferential surface of the rotating shaft. The inner wall of the rotating groove and the inner wall of the rotating limiting member are provided with a plurality of rotating limiting rollers at circumferential intervals. The rotating limiting rollers roll in cooperation with the rotating limiting groove to limit the axial displacement of the rotating shaft.
[0017] In a preferred embodiment of the present invention, the rotating shaft is a hollow structure, the hollow cavity of the rotating shaft is connected to the inner cavity of the roller, and the hollow cavity of the rotating shaft forms a sensing window, which is used for detection by the pet entry and exit sensor on the mechanism module.
[0018] As a preferred embodiment of the present invention, a cover is detachably installed on the side of the base near the movement module, and the cover covers the gear transmission mechanism and the upper end of the movement housing.
[0019] As a preferred embodiment of the present invention, the bottom of the drum receiving groove is provided with a waste channel that runs vertically through it;
[0020] The pet litter box also includes a pull-out trash can, which is slidably disposed at the bottom of the base, with its opening facing the trash channel to catch trash falling through the trash channel.
[0021] As a preferred embodiment of the present invention, a plurality of evenly distributed support rollers are provided in the roller receiving groove, and the support rollers are in rolling contact with the outer circumferential surface of the roller to support the roller to rotate around its own axis.
[0022] As a preferred embodiment of the present invention, the gear transmission mechanism includes an annular rack and a drive gear, the drive gear meshing with the annular rack, the annular rack being disposed on the end face of the roller near the movement module, and the drive gear being coaxially disposed on the output shaft of the motor.
[0023] In a preferred embodiment of the present invention, the control component includes a circuit board, a sensor assembly, control buttons, and indicator lights. The circuit board is electrically connected to the motor, the sensor assembly, the control buttons, and the indicator lights. The sensor assembly includes a motor positioning sensor and a pet entry / exit sensor. The motor positioning sensor is used to detect the rotational position of the roller. The pet entry / exit sensor detects whether a pet has entered the roller through the sensing window of the roller.
[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0025] 1. Adopting an integrated modular design, all live components such as motors, circuit boards, and sensors are encapsulated in a detachable core module, making more than 90% of the litter box a non-conductive plastic structure. When cleaning, simply remove the core module from the base, and the remaining parts can be rinsed directly with water, completely solving the problems of many cleaning dead spots and inability to be washed with water in existing technologies.
[0026] 2. The mechanism module does not directly contact the inside of the drum, and can remain clean during normal use, avoiding the risk of electronic components being contaminated by cat litter, feces or urine, and extending the service life of electronic components.
[0027] 3. By cooperating with the rotating shaft, rotating limit component and rotating limit roller, reliable rotational support of the roller is achieved, and the hollow rotating shaft forms a sensing window, so that the pet entry and exit sensor can detect without penetrating the roller wall, which simplifies the structure;
[0028] 4. The movement module is connected to the base by a plug-in method, and the snap-fit structure enables quick assembly and disassembly without tools, which greatly reduces maintenance costs and repair cycles;
[0029] 5. A multi-point support and limiting system is formed by the support rollers and the rotating limit rollers to ensure smooth roller rotation, accurate positioning, and reduced operating noise;
[0030] 6. This invention completely changes the existing structure stacking and electronic layout of smart litter boxes, achieving the goal of making more than 90% of the litter box washable, greatly improving the user experience. It is also applicable to various litter box structures, such as semi-open litter boxes and closed litter boxes, and has good versatility and expandability. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of the semi-open pet litter box that is easy to clean, as shown in Embodiment 1 of the present invention.
[0033] Figure 2 This is an exploded view of the semi-open pet litter box that is easy to clean, as described in Embodiment 1 of the present invention.
[0034] Figure 3 This is a schematic diagram of the mechanism module in Embodiment 1 of the present invention;
[0035] Figure 4 This is a schematic diagram of the connection between the motor and the drive gear in Embodiment 1 of the present invention;
[0036] Figure 5 This is a schematic diagram of the structure of the easy-to-clean enclosed pet litter box in Embodiment 2 of the present invention;
[0037] Figure 6 This is an exploded view of the easy-to-clean enclosed pet litter box in Embodiment 2 of the present invention;
[0038] Figure 7 This is a schematic diagram of the mechanism module in Embodiment 2 of the present invention;
[0039] Figure 8 This is a schematic diagram of the connection between the motor and the drive gear in Embodiment 2 of the present invention.
[0040] In the diagram,
[0041] 1. Base; 11. Roller receiving slot; 12. Trash chute; 13. Pull-out trash box; 14. Mechanism mounting slot; 15. Fastener; 16. Cover; 17. Support roller; 18. Drain hole; 2. Roller; 21. Filter screen; 22. Litter baffle; 23. Inlet / outlet; 24. Rotating shaft; 241. Hollow cavity; 242. Rotation limit groove; 25. Enclosed cover structure; 3. Mechanism module; 31. Mechanism housing; 311. Rotation groove; 312. Rotation limit component; 313. Rotation limit roller; 32. Motor; 33. Control button; 34. Indicator light; 35. Motor positioning sensor; 36. Pet entry / exit sensor; 4. Gear transmission mechanism; 41. Ring rack; 42. Drive gear. Detailed Implementation
[0042] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also stated that the embodiments described below are for illustrative purposes only and are not intended to limit the invention.
[0043] It should be noted that the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. "A plurality" means two or more, unless otherwise explicitly defined.
[0044] Example 1
[0045] Please see Figures 1 to 4 This embodiment provides a semi-open pet litter box that is easy to clean, including a base 1, a roller 2 and a core module 3.
[0046] The base 1 is a non-electric plastic structure that can be directly washed with water. A roller receiving groove 11 is provided on the top of the base 1 to accommodate the roller 2. A vertically extending waste channel 12 is provided at the bottom of the roller receiving groove 11. A pull-out waste box 13 is slidably mounted on the bottom of the base 1, with its opening facing the waste channel 12 to collect clumps of cat litter and pet feces falling through the waste channel 12. The pull-out waste box 13 can be pulled out in a front-back direction for easy waste removal.
[0047] A movement mounting groove 14 is provided on the side of the base 1 near the movement module 3. The movement mounting groove 14 is a groove structure that is adapted to the shape of the movement module 3 and is used to accommodate and position the movement module 3.
[0048] Roller 2 is also a non-electric plastic structure that can be directly rinsed with water. Inside roller 2, there is a filter screen 21 and a litter baffle 22 to separate clumped litter from clean litter; the front of roller 2 is equipped with an inlet and outlet 23 for pets to enter and exit and for waste to be discharged.
[0049] A rotating shaft 24 is provided on the side of the roller 2 near the mechanism module 3. The rotating shaft 24 is coaxial with the roller 2 and serves as the rotation support end of the roller 2. The rotating shaft 24 has a hollow structure, in which the hollow cavity 241 is connected to the inner cavity of the roller 2. The hollow cavity 241 of the rotating shaft 24 forms a sensing window, which is used by the pet entry and exit sensor 36 on the mechanism module 3 for detection.
[0050] The core electronic component integration unit of the litter box is inserted into the core mounting slot 14 and fixed by a snap-fit structure.
[0051] The movement module 3 includes a movement housing 31, a motor 32, and control components.
[0052] A rotating groove 311 is formed on the top of the movement housing 31 near the roller 2. The rotating groove 311 is a semi-circular arc-shaped groove used to accommodate the rotating shaft 24. A rotating limiting member 312 is hinged to the top of the rotating groove 311 via a hinge shaft. The rotating limiting member 312 is an arc-shaped cover structure that cooperates with the rotating groove 311. A snap-fit member 15 is provided on the top of the movement mounting groove 14. The snap-fit member 15 engages with the non-hinged end of the rotating limiting member 312, confining the rotating shaft 24 within the rotational space enclosed by the rotating limiting member 312 and the rotating groove 311, while simultaneously confining the movement module 3 within the movement mounting groove 14. The rotating shaft 24 can rotate freely around its own axis within this rotational space, while the rotating limiting member 312 prevents the rotating shaft 24 from dislodging upwards, achieving reliable axial positioning. Among them, the buckle 15 is an elastic buckle 15. When disassembling, pressing its end can release the lock on the rotation limiter 312, and remove the roller 2 and the movement module 3 from the base 1.
[0053] A ring-shaped rotation limiting groove 242 is formed on the outer circumferential surface of the rotating shaft 24. Multiple rotation limiting rollers 313 are spaced circumferentially on the inner wall of the rotating groove 311 and the inner wall of the rotation limiting member 312. The rotation limiting rollers 313 roll in contact with the rotating limiting groove 242. The rims of the rotation limiting rollers 313 are embedded in the rotating limiting groove 242, which on the one hand limits the axial displacement of the rotating shaft 24, preventing axial movement of the roller 2 during rotation; on the other hand, it converts sliding friction into rolling friction, reducing rotational resistance and ensuring smooth rotation of the roller 2.
[0054] The motor 32 is fixed inside the core housing 31, with its output shaft extending outside the core housing 31. The motor 32 is connected to one side of the roller 2 via a gear transmission mechanism 4 to drive the roller 2 to rotate around its own axis. The gear transmission mechanism 4 includes a ring rack 41 and a drive gear 42. The ring rack 41 is coaxially mounted on the end face of the roller 2 near the core module 3 and has an external gear ring structure. The drive gear 42 is coaxially mounted on the output shaft of the motor 32, meshing with the ring rack 41, and is located below the ring rack 41 to prevent the ring rack 41 from being blocked by the drive gear 42 when the roller 2 is disassembled. When the motor 32 is running, the drive gear 42 drives the ring rack 41 to rotate, thereby driving the roller 2 to rotate around its own axis, realizing the automatic poop-scooping function.
[0055] The control components include a circuit board, sensor components, control buttons 33, and indicator lights 34. The circuit board is electrically connected to the motor 32, sensor components, control buttons 33, and indicator lights 34. The sensor components include a motor positioning sensor 35 and a pet entry / exit sensor 36. The motor positioning sensor 35 (such as a Hall sensor or photoelectric encoder) is located inside the core housing 31 near the drive gear 42 to detect the rotational position of the roller 2, ensuring that the roller 2 stops at the correct opening orientation. The pet entry / exit sensor 36 is located in the rotation groove 311 of the core housing 31. The detection end of the pet entry / exit sensor 36 detects whether a pet has entered the roller 2 through the hollow cavity 241 of the rotating shaft 24, eliminating the need for holes or transparent windows in the roller wall, simplifying the structure and ensuring the integrity of the roller 2. The control buttons 33 and indicator lights 34 are embedded on the surface of the core housing 31. The control buttons 33 include a power button and a manual scoop button, while the indicator lights 34 display the power status, operating status, and fault indications.
[0056] A cover 16 is detachably installed on the side of the base 1 near the movement module 3. The cover 16 covers the gear transmission mechanism 4 and the upper end of the movement housing 31, serving to prevent dust, foreign objects, and for aesthetic purposes.
[0057] To ensure smooth rotation and precise positioning of the roller 2, a rotating shaft 24 is also provided on the side of the roller 2 away from the movement module 3. Similarly, a rotating groove 311, a snap fastener 15, and a rotation limiter 312 that cooperate with the rotating shaft 24 are provided on the side of the base 1 away from the movement module 3. A cover 16 is also detachably installed on the side of the base 1 away from the movement module 3, covering the rotating groove 311, snap fastener 15, and rotation limiter 312 on that side, serving to prevent dust, foreign objects, and for aesthetic purposes.
[0058] Example 2
[0059] like Figures 5 to 8 As shown, this embodiment provides an easy-to-clean enclosed pet litter box, including a base 1, a roller 2, and a core module 3. The main difference from Embodiment 1 is that the waste channel 12 and pull-out waste box 13 of the base 1 are removed, and a closed cover structure 25 is added inside the roller 2 to form a fully enclosed toilet space, which is suitable for families with high requirements for odor control or pets that prefer a private space.
[0060] The base 1 is a non-electric plastic structure that can be directly rinsed with water. A roller receiving groove 11 is provided on the top of the base 1 to accommodate the roller 2. Multiple evenly distributed support rollers 17 are arranged within the roller receiving groove 11. The support rollers 17 roll in contact with the outer circumference of the roller 2, supporting the roller 2 to rotate around its own axis. This eliminates the need for a rotating shaft 24 on the side of the roller 2 furthest from the movement module 3, ensuring smooth rotation and precise positioning of the roller 2. Multiple through-holes 18 are provided at the bottom of the roller receiving groove 11 to facilitate drainage of water during cleaning.
[0061] A movement mounting groove 14 is provided on the side of the base 1 near the movement module 3. The movement mounting groove 14 is a groove structure that is adapted to the shape of the movement module 3 and is used to accommodate and position the movement module 3.
[0062] Roller 2 is also a non-electric plastic structure and can be directly rinsed with water. Inside roller 2, there is a filter screen 21 and a litter baffle 22 to separate clumped litter from clean litter. Roller 2 also has a closed cover structure 25 inside, forming a fully enclosed toilet space for collecting the separated clumped litter. The front of roller 2 has an inlet / outlet 23 for pets to enter and exit.
[0063] A rotating shaft 24 is provided on the side of the roller 2 near the mechanism module 3. The rotating shaft 24 is coaxial with the roller 2 and serves as the rotation support end of the roller 2. The rotating shaft 24 has a hollow structure, in which the hollow cavity 241 is connected to the inner cavity of the roller 2. The hollow cavity 241 of the rotating shaft 24 forms a sensing window, which is used by the pet entry and exit sensor 36 on the mechanism module 3 for detection.
[0064] The core electronic component integration unit of the litter box is inserted into the core mounting slot 14 and fixed by a snap-fit structure.
[0065] The movement module 3 includes a movement housing 31, a motor 32, and control components.
[0066] A rotating groove 311 is formed on the top of the movement housing 31 near the roller 2. The rotating groove 311 is a semi-circular arc-shaped groove used to accommodate the rotating shaft 24. A rotating limiting member 312 is hinged to the top of the rotating groove 311 via a hinge shaft. The rotating limiting member 312 is an arc-shaped cover structure that cooperates with the rotating groove 311. A snap-fit member 15 is provided on the top of the movement mounting groove 14. The snap-fit member 15 engages with the non-hinged end of the rotating limiting member 312, confining the rotating shaft 24 within the rotational space enclosed by the rotating limiting member 312 and the rotating groove 311, while simultaneously confining the movement module 3 within the movement mounting groove 14. The rotating shaft 24 can rotate freely around its own axis within this rotational space, while the rotating limiting member 312 prevents the rotating shaft 24 from dislodging upwards, achieving reliable axial positioning. Among them, the buckle 15 is an elastic buckle 15. When disassembling, pressing its end can release the lock on the rotation limiter 312, and remove the roller 2 and the movement module 3 from the base 1.
[0067] A ring-shaped rotation limiting groove 242 is formed on the outer circumferential surface of the rotating shaft 24. Multiple rotation limiting rollers 313 are spaced circumferentially on the inner wall of the rotating groove 311 and the inner wall of the rotation limiting member 312. The rotation limiting rollers 313 roll in contact with the rotating limiting groove 242. The rims of the rotation limiting rollers 313 are embedded in the rotating limiting groove 242, which on the one hand limits the axial displacement of the rotating shaft 24, preventing axial movement of the roller 2 during rotation; on the other hand, it converts sliding friction into rolling friction, reducing rotational resistance and ensuring smooth rotation of the roller 2.
[0068] The motor 32 is fixed inside the core housing 31, with its output shaft extending outside the core housing 31. The motor 32 is connected to one side of the roller 2 via a gear transmission mechanism 4 to drive the roller 2 to rotate around its own axis. The gear transmission mechanism 4 includes a ring rack 41 and a drive gear 42. The ring rack 41 is coaxially mounted on the end face of the roller 2 near the core module 3 and has an external gear ring structure. The drive gear 42 is coaxially mounted on the output shaft of the motor 32, meshing with the ring rack 41, and is located below the ring rack 41 to prevent the ring rack 41 from being blocked by the drive gear 42 when the roller 2 is disassembled. When the motor 32 is running, the drive gear 42 drives the ring rack 41 to rotate, thereby driving the roller 2 to rotate around its own axis, realizing the automatic poop-scooping function.
[0069] The control components include a circuit board, sensor components, control buttons 33, and indicator lights 34. The circuit board is electrically connected to the motor 32, sensor components, control buttons 33, and indicator lights 34. The sensor components include a motor positioning sensor 35 and a pet entry / exit sensor 36. The motor positioning sensor 35 (such as a Hall sensor or photoelectric encoder) is located inside the housing 31 near the drive gear 42 to detect the rotational position of the roller 2, ensuring that the roller 2 stops at the correct opening orientation. The pet entry / exit sensor 36 is located in the rotation groove 311 of the housing 31. The detection end of the pet entry / exit sensor 36 detects whether a pet has entered the roller 2 through the hollow cavity 241 of the rotating shaft 24, eliminating the need for holes or transparent windows in the roller 2 wall, simplifying the structure and ensuring the integrity of the roller 2. The control buttons 33 and indicator lights 34 are embedded on the surface of the housing 31. The control buttons 33 include a power button and a manual scoop button, while the indicator lights 34 display the power status, operating status, and fault indications.
[0070] A cover 16 is detachably installed on the side of the base 1 near the movement module 3. The cover 16 covers the gear transmission mechanism 4 and the upper end of the movement housing 31, serving to prevent dust, foreign objects, and for aesthetic purposes.
[0071] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
[0072] The present invention has been described above with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other situations without modification, are all within the protection scope of the present invention.
Claims
1. A pet litter box that is easy to clean, characterized in that, include: The base has a roller receiving groove on its top; A roller, which is rotatably disposed within a roller receiving groove, has an inlet / outlet at its front end for pets to enter and exit. The movement module is detachably installed on one side of the base. The movement module includes a movement housing, a motor disposed in the movement housing, and a control component electrically connected to the motor. The motor is connected to one side of the roller through a gear transmission mechanism to drive the roller to rotate around its own axis.
2. The easy-to-clean pet litter box according to claim 1, characterized in that, The base has a movement mounting slot on the side near the movement module that is compatible with the movement module. The movement module is inserted into the movement mounting slot and is fixed by a snap-fit structure.
3. The easy-to-clean pet litter box according to claim 2, characterized in that, A rotating shaft is provided on the side of the roller near the movement module. A rotating groove is provided on the top of the movement housing near the roller. A rotating limiting member is hinged to the top of the rotating groove. A snap-fit member is provided on the top of the movement mounting groove. The snap-fit member engages with the non-hinged end of the rotating limiting member. The rotating shaft is limited to the rotation space enclosed by the rotating limiting member and the rotating groove, and can rotate around its own axis within the rotation space.
4. The easy-to-clean pet litter box according to claim 3, characterized in that, A ring-shaped rotation limiting groove is formed on the outer circumferential surface of the rotating shaft. The inner wall of the rotating groove and the inner wall of the rotating limiting member are provided with multiple rotating limiting rollers at circumferential intervals. The rotating limiting rollers roll in cooperation with the rotating limiting groove to limit the axial displacement of the rotating shaft.
5. The easy-to-clean pet litter box according to claim 3, characterized in that, The rotating shaft has a hollow structure, and the hollow cavity of the rotating shaft is connected to the inner cavity of the roller. The hollow cavity of the rotating shaft forms a sensing window, which is used by the pet entry and exit sensor on the mechanism module for detection.
6. The easy-to-clean pet litter box according to claim 3, characterized in that, A cover is detachably installed on the side of the base near the movement module, and the cover covers the gear transmission mechanism and the upper end of the movement housing.
7. The easy-to-clean pet litter box according to claim 1, characterized in that, The bottom of the drum receiving trough is provided with a vertically penetrating garbage channel; The pet litter box also includes a pull-out trash can, which is slidably disposed at the bottom of the base, with its opening facing the trash channel to catch trash falling through the trash channel.
8. The easy-to-clean pet litter box according to claim 1, characterized in that, The roller receiving groove is provided with a plurality of evenly distributed support rollers, which roll in contact with the outer circumferential surface of the roller to support the roller to rotate around its own axis.
9. The easy-to-clean pet litter box according to claim 1, characterized in that, The gear transmission mechanism includes a ring rack and a drive gear. The drive gear meshes with the ring rack. The ring rack is located on the end face of the roller near the movement module. The drive gear is coaxially mounted on the output shaft of the motor.
10. The easy-to-clean pet litter box according to claim 1, characterized in that, The control component includes a circuit board, a sensor assembly, control buttons, and indicator lights. The circuit board is electrically connected to the motor, the sensor assembly, the control buttons, and the indicator lights. The sensor assembly includes a motor positioning sensor and a pet entry / exit sensor. The motor positioning sensor is used to detect the rotational position of the roller. The pet entry / exit sensor detects whether a pet has entered the roller through the sensing window of the roller.