Automatic cat toilet

Abstract

According to the automatic cat toilet, a shell is driven by a driving assembly to rotate in the forward direction, cat litter in a litter bin can pass through a filter screen and is separated into clean cat litter and bonded and agglomerated polluted cat litter, the clean cat litter is poured into a separation cavity, the polluted cat litter is poured out of the litter bin, and the shell is driven by the driving assembly to rotate in the reverse direction; clean cat litter in the separation cavity can be poured into the litter bin again; in the process of pouring the polluted cat litter out of the litter bin, the cat litter in the litter bin can be gathered together due to the fact that the intersecting line of the vertical face of the rotating shaft passing through the shell and the lower portion of the litter bin is in the shape of the downwards-protruding arc and the lowest point of the arc is the lowest point of the litter bin, and the cat litter in the litter bin can be poured out of the litter bin due to the fact that the lowest points of the multiple arcs are mutually connected to form the line. The cat litter in the litter bin can be poured out of the litter bin through the opening of the litter bin, extra parts are not needed in the cleaning process, operation is easy and convenient, and cleaning is thorough. In general, according to the automatic cat toilet, polluted cat litter in the litter bin can be cleared away more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of pet supplies technology, specifically an automatic cat toilet. Background Technology

[0002] To make cleaning up after pet cats more convenient and create a better living environment for them, litter boxes containing cat litter have appeared on the market. These pet supplies can be used to bury feces and urine, and also have good absorbency and odor removal functions, effectively preventing pollution of the surrounding environment. Therefore, litter boxes have become an essential component in most households that keep pet cats. Especially in recent years, with the continuous increase in the number of cat owners, litter boxes have become more and more popular.

[0003] When cat litter becomes soiled with excrement, owners need to clean it after use to keep it clean. There are various methods and structures for cleaning cat litter on the market. One method involves installing a separation compartment inside the litter box, which holds the litter. A filter screen is installed at the opening of the separation compartment. By rotating the litter box, the litter in the litter box passes through the filter screen, allowing clean litter to enter the separation compartment, while soiled litter slides along the filter screen and is eventually poured out of the litter box through the opening. After cleaning, rotating the litter box in the opposite direction will return the clean litter in the separation compartment to the litter box.

[0004] The aforementioned litter boxes have the following problems during use. Specifically, the litter box's internal litter compartment is usually cylindrical, with its central axis and rotation axis collinear and horizontally positioned. The horizontal dimension of the litter box opening is usually smaller than the horizontal dimension of the litter compartment, and the soiled litter cannot be gathered to the corresponding position of the litter box opening. This results in the soiled litter not being able to be poured out of the litter box all at once, making cleaning inconvenient. To solve the above problems, some litter boxes have added a support component with a spherical surface at the opening, allowing the soiled litter to be gathered to the opening of the litter box as the litter box rotates. However, this method increases production costs and manufacturing difficulty. In addition, the newly added support component may also allow sand and urine to get inside, making it equally difficult to clean. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the above issues, this invention provides an automatic cat litter box that makes it easier to clean the litter box of contaminated cat litter.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An automatic cat toilet includes a base placed on the ground for support. The base is equipped with a drive assembly that drives a connected housing to rotate the housing. The housing has a litter compartment connected to the outside for storing cat litter and accommodating pets. The litter compartment has a shield and a filter inside. The shield, the filter, and the inner wall of the housing can be enclosed to form a separation cavity.

[0010] The pivot of the housing is located in a horizontal plane. Taking the horizontal plane passing through the pivot of the housing as the reference plane, and taking the part of the litter box located below the reference plane as the lower part of the litter box, the intersection line of the vertical plane passing through the pivot of the housing and the lower part of the litter box forms a downward convex arc. The lowest point of the arc is the lowest point of the litter box. The downward force of the cat litter along the tangent direction of the arc is greater than the frictional force between the cat litter and the litter box, so that the cat litter in the litter box can quickly gather together. The opening of the litter box passes through the line formed by connecting the lowest points of multiple arcs. The width of the gathered cat litter is smaller than the width of the opening of the litter box, so that the cat litter in the litter box can be poured out of the litter box in one go through the opening of the litter box.

[0011] The drive assembly drives the housing to rotate forward, allowing the cat litter in the litter box to pass through the filter screen and be separated into clean cat litter and clumped contaminated cat litter. The clean cat litter is then poured into the separation chamber, while the contaminated cat litter is poured out of the litter box. The drive assembly drives the housing to rotate in the opposite direction, allowing the clean cat litter in the separation chamber to be poured back into the litter box.

[0012] Preferably, the system further includes a support assembly disposed on the upper surface of the base. The top of the support assembly is slidably connected to the housing for supporting the housing. The outer surface of the housing is substantially a rotating body, and the axis of rotation of the housing is located in a horizontal plane and collinear with the central axis of the housing, so that the top of the support assembly can always abut against the outer surface of the housing, thereby supporting the housing.

[0013] Preferably, the support assembly consists of multiple pulleys to reduce the friction between the support assembly and the housing, and the multiple pulleys are evenly distributed to ensure that the housing is subjected to uniform force.

[0014] Preferably, the direction of the force exerted by the housing on the pulley is located within the rotational plane of the pulley, which enhances the stability of the pulley and prevents the housing from shifting or misaligning.

[0015] Preferably, the housing has a first gear located in a vertical plane on the side near the drive assembly, and a snap-fit ​​member is provided at the end of the first gear away from the housing. The snap-fit ​​member is substantially cylindrical and coaxially arranged with the first gear, and has an annular groove located in a vertical plane on the snap-fit ​​member. The drive assembly includes:

[0016] Mounting bracket, which is fixedly connected to the base;

[0017] The second gear is located in a vertical plane and rotatably connected to the mounting base. The second gear can mesh with the first gear. One end of the second gear is connected to a motor drive so that the second gear can rotate under the drive of the motor, thereby driving the first gear to rotate.

[0018] A lower limit component is fixedly connected to the mounting base. The lower limit component is basically semi-circular and is set corresponding to the annular slot. The lower limit component can be inserted into the annular slot and slidably connected to the snap-fit ​​component.

[0019] An upper limit stop is provided, with its first end rotatably connected to the mounting base and its second end detachably connected to the mounting base. The upper limit stop is substantially semi-circular and corresponds to the annular slot. The upper limit stop can be inserted into the annular slot and slidably connected to the snap-fit ​​component. The upper limit stop and the lower limit stop are located on the same plane, so that after the second end of the upper limit stop is connected to the mounting base, both the upper limit stop and the lower limit stop can be inserted into the annular slot, thereby preventing the snap-fit ​​component from detaching from the drive assembly.

[0020] Preferably, after the housing is connected to the drive assembly, a plurality of rollers are rotatably connected to the side of the lower limiting member near the annular slot. The lower limiting member is slidably connected to the snap-fit ​​member through the rollers to reduce the friction between the lower limiting member and the snap-fit ​​member. The plurality of rollers are evenly distributed to ensure that the snap-fit ​​member is subjected to uniform force.

[0021] Preferably, the device further includes a support arm, which is disposed on the other side of the base opposite to the mounting seat. The support arm has a groove, and the housing has a protrusion corresponding to the groove. The outer surface of the protrusion is substantially cylindrical, and the central axis of the protrusion and the rotation axis of the housing are collinear. After the housing is connected to the drive assembly, the protrusion can be inserted into the groove so that the support arm can support the housing, thereby making the opposite sides of the housing evenly stressed.

[0022] Preferably, the base has a through hole running vertically through it, and the bottom of the base has multiple support feet so that the bottom of the through hole is suspended in the air. The through hole is set to correspond to the opening of the litter box to prevent contaminated cat litter poured out of the litter box from falling onto the base.

[0023] Preferably, a collection box is detachably connected to the bottom of the base, and the top of the collection box is open and corresponding to the through hole, so that contaminated cat litter poured out from the litter bin can fall into the interior of the collection box.

[0024] Preferably, both the sand bin and the collection box are equipped with deodorizing boxes, which contain deodorizing agents to remove odors from the sand bin and the collection box, respectively.

[0025] (III) Beneficial Effects

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] In actual use, place the base in the designated position and pour cat litter into the litter bin inside the casing. The cat can then enter the litter bin to rest or defecate. After the cat finishes defecating and leaves the litter bin, the drive assembly can be used to rotate the casing forward. At this time, the cat litter in the litter bin passes through the filter screen and is separated into clean cat litter and clumped contaminated cat litter. The clean cat litter is poured into the separation chamber, and the contaminated cat litter is poured out of the litter bin. The drive assembly can then be used to rotate the casing in the reverse direction, which will pour the clean cat litter from the separation chamber back into the litter bin. During the process of pouring the contaminated cat litter out of the litter bin, the intersection line between the vertical surface of the rotating shaft of the casing and the lower part of the litter bin forms a downward convex arc, and the lowest point of the arc is the lowest point of the litter bin. The lowest point of the litter box, and the downward force of the litter along the tangential direction of the arc, is greater than the friction between the litter and the litter box. Therefore, the litter in the litter box can quickly gather together under the action of gravity. Since the opening of the litter box is through the line formed by connecting the lowest points of multiple arcs, and the width of the gathered litter is smaller than the width of the opening of the litter box, the litter in the litter box can be poured out of the litter box in one go. In the entire cleaning process, the litter box can be discharged by simply rotating it, relying on its own shape structure. No additional parts are needed. The operation is simple, convenient and quick, and it can completely discharge the litter in one go, leaving no dead corners for cleaning. In summary, the automatic litter box of this application is more convenient for cleaning the litter in the litter box. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1A perspective view of the automatic cat toilet of this utility model is shown;

[0030] Figure 2 It shows Figure 1 A 3D view of an automatic cat toilet after the cover has been removed;

[0031] Figure 3 It shows Figure 1 A partial 3D view of an automatic cat toilet.

[0032] Figure 4 It shows Figure 3 A 3D view from another angle;

[0033] Figure 5 It shows Figure 4 Enlarged view of part A in the image;

[0034] Figure 6 It shows Figure 1 A perspective view of the inner shell and the various components mounted on it;

[0035] Figure 7 It shows Figure 6 A three-dimensional view of a vertical cross-section;

[0036] Figure 8 It shows Figure 6 A three-dimensional view from another angle.

[0037] In the diagram: 1. Base; 2. Drive assembly; 21. Mounting base; 22. Second gear; 23. Lower limit component; 24. Upper limit component; 241. First end; 242. Second end; 25. Cover; 3. Housing; 31. Sand chamber; 4. Shielding component; 5. Filter screen; 6. Separation chamber; 7. Support assembly; 71. Pulley; 8. First gear; 9. Snap-fit ​​component; 91. Annular slot; 10. Roller; 11. Groove; 12. Protrusion; 13. Through hole; 14. Support foot; 15. Collection box; 16. Deodorizing box; 17. Support arm. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] See appendix Figure 1 and attached Figure 7This utility model discloses an automatic cat litter box, including a base 1, which is placed on the ground for support. A drive assembly 2 is mounted on the base 1, driving a housing 3 to rotate. The housing 3 has a litter box 31 connected to the outside for storing cat litter and accommodating pets. The litter box 31 has a shield 4 and a filter 5 inside, which, together with the inner wall of the housing 3, form a separation cavity 6. The pivot of the housing 3 is located in a horizontal plane. Taking the horizontal plane passing through the pivot of the housing 3 as a reference plane, and the portion of the litter box 31 below the reference plane as its lower part, the intersection line of the vertical plane passing through the pivot of the housing 3 and the lower part of the litter box 31 forms a downward-convex arc 12, with the lowest point of the arc being the litter box. At the lowest point of bin 31, the force exerted by the cat litter downwards along the tangential direction of the arc is greater than the friction between the cat litter and bin 31, so that the cat litter in bin 31 can quickly gather together. The opening of bin 31 passes through the line formed by connecting the lowest points of multiple arcs, and the width of the gathered cat litter is smaller than the width of the opening of bin 31, so that the cat litter in bin 31 can be poured out of bin 31 in one go through the opening of bin 31. By driving the housing 3 to rotate forward through the drive component 2, the cat litter in bin 31 can pass through the filter screen 5 and be separated into clean cat litter and clump-forming contaminated cat litter, so that the clean cat litter can be poured into the separation chamber 6 and the contaminated cat litter can be poured out of bin 31. By driving the housing 3 to rotate in the reverse direction through the drive component 2, the clean cat litter in the separation chamber 6 can be poured back into bin 31.

[0040] In actual use, the base 1 is placed in the designated position, and cat litter is poured into the litter box 31 in the housing 3. The cat can then enter the litter box 31 to rest or defecate. After the cat finishes defecating and leaves the litter box 31, the housing 3 can be driven to rotate forward by the drive component 2. At this time, the cat litter in the litter box 31 can pass through the filter screen 5 and be separated into clean cat litter and clump-forming contaminated cat litter. The clean cat litter is poured into the separation chamber 6, and the contaminated cat litter is poured out of the litter box 31. The housing 3 can be driven to rotate in the reverse direction by the drive component 2, and the clean cat litter in the separation chamber 6 can be poured back into the litter box 31. During the process of pouring the contaminated cat litter out of the litter box 31, the vertical plane of the rotating shaft of the housing 3 intersects with the lower part of the litter box 31 in an arc shape that bulges downward 12, and the lowest point of the arc is... At the lowest point of the litter box 31, the downward force of the cat litter along the tangential direction of the arc is greater than the frictional force between the cat litter and the litter box 31. Therefore, the cat litter in the litter box 31 can quickly gather together under the action of gravity. Since the opening of the litter box 31 is through the line formed by connecting the lowest points of multiple arcs, and the width of the gathered cat litter is smaller than the width of the opening of the litter box 31, the cat litter in the litter box 31 can be poured out of the litter box 31 in one go. During the entire cleaning process, the contaminated cat litter can be discharged by simply rotating the litter box 31 itself, relying on its own shape and structure. No additional parts are needed. The operation is simple, convenient and quick, and it can completely discharge the contaminated cat litter in one go, leaving no cleaning dead corners. In summary, the automatic cat toilet of this application is more convenient for cleaning the contaminated cat litter in the litter box 31.

[0041] It is important to note that even if the width of the litter in the litter box 31 is greater than the width of the opening of the litter box 31, the contaminated litter can still be completely discharged at once. The principle is as follows: Since the intersection line between the vertical plane of the rotating shaft of the shell 3 and the lower part of the litter box 31 forms a downward convex arc 12, and the lowest point of the arc is the lowest point of the litter box 31, the litter in the litter box 31 will automatically gather and converge along the arc-shaped surface of the litter box under its own gravity. The opening of the litter box 31 is formed by connecting the lowest points of multiple arcs. Therefore, when the opening of the litter box 31 intersects with the vertical plane of the rotating shaft of the shell 3, all the contaminated litter will automatically move towards the opening of the litter box 31, thereby being discharged from the litter box 31.

[0042] Based on the above scheme, since the intersection line between the vertical plane of the rotating shaft of the shell 3 and the lower part of the sand hopper 31 is an arc protruding downward 12, the sand hopper 31 can include shapes such as spheres and ellipsoids. However, the shape of the shell 3 is not limited in this application, so the shell 3 can also be set to the shape of spheres, ellipsoids, etc. It should be noted that the specific shape and design position of the sand hopper 31 are not limited in this application, as long as the above functions are met. Therefore, it can be a regular rotating body or an irregular shape. When the sand hopper 31 is a rotating body, the central axis and the rotating shaft of the sand hopper 31 can be collinear or not.

[0043] It should be noted that the "central axis" mentioned above refers to the geometric center line of the component's own structure. For example, the central axis of a cone is the line connecting the vertex to the center of the bottom surface, and the central axis of a cylinder is the line connecting the center of the top surface to the center of the bottom surface. The "axis of rotation" mentioned above refers to the line around which the component rotates during its own rotation. Therefore, the axis of rotation may or may not be collinear with the central axis.

[0044] It should be noted that this application does not specify the exact direction of the "forward" and "reverse" directions. The rotation can be flexibly adjusted according to actual needs. However, it is clear that the "reverse" direction is opposite to the "forward" direction. For example, if the forward direction is clockwise rotation, the reverse direction is counterclockwise rotation; if the forward direction is counterclockwise rotation, the reverse direction is clockwise rotation.

[0045] See appendix Figure 3 and attached Figure 4 The gravity acting on the shell 3 is vertically downward, but the drive component 2 is connected to the side of the shell 3, meaning the shell 3 is supported by the side. The bottom of the shell 3 is suspended, resulting in insufficient support and a large pressure on the drive component 2. If the shell 3 is only supported by the drive component 2, it will also lead to uneven force distribution and easy tilting and displacement. To solve the above problems, the following design is made in this embodiment. Specifically, it also includes a support component 7, which is set on the upper surface of the base 1. The top of the support component 7 is slidably connected to the shell 3 to support the shell 3. The outer surface of the shell 3 is basically a rotating body, and the axis of rotation of the shell 3 is located in the horizontal plane and is collinear with the central axis of the shell 3.

[0046] Through the design of the above structure, the bottom of the housing 3 can be supported by the support component 7, thereby greatly reducing the vertical pressure on the drive component 2, or even eliminating the vertical force, which is beneficial for driving the housing 3 to rotate. At the same time, the bottom of the housing 3 is no longer suspended in the air and will no longer tilt or deviate in the vertical direction, making the rotation more stable and smooth. In addition, since the outer surface of the housing 3 is basically a rotating body, and the axis of rotation of the housing 3 is located in the horizontal plane and is collinear with the central axis of the housing 3, the top of the support component 7 can always abut against the outer surface of the housing 3, thereby supporting the housing 3.

[0047] See appendix Figure 3 and attached Figure 4 There are many different structures that can provide support. In this embodiment, one type is described. Specifically, the support component 7 is composed of multiple pulleys 71, which are evenly distributed.

[0048] Through the design of the above structure, since the support component 7 is composed of multiple pulleys 71, the pulleys 71 can also rotate during the rotation of the housing 3, thereby greatly reducing the friction between the support component 7 and the housing 3, making the housing 3 easier to rotate; and since the multiple pulleys 71 that make up the support component 7 are evenly distributed, the housing 3 is subjected to uniform force and is not easy to tilt or deviate.

[0049] See appendix Figure 3 and attached Figure 4 Furthermore, in this embodiment, the following design is also made: specifically, the direction of the force applied by the housing 3 to the pulley 71 is located within the rotation surface of the pulley 71.

[0050] Through the design of the above structure, the external force on the pulley 71 can be basically consistent with the pressure applied by the housing 3 to the pulley 71. This can effectively prevent the pressure applied by the housing 3 to the pulley 71 from being decomposed into forces in other directions, thereby causing the pulley 71 to deviate. This can improve the effect of the force, that is, the support effect is better. At the same time, it can also enhance the stability of the pulley 71 and prevent the housing 3 from deviating or misaligning. It should be noted that the above "rotation surface of the pulley 71" refers to the plane on which the pulley 71 itself is located.

[0051] See appendix Figure 2 Appendix Figure 5 and attached Figure 6There are various structures that can drive other components to rotate. This embodiment describes one such structure. Specifically, the housing 3 has a first gear 8 located on a vertical plane on the side near the drive assembly 2. The end of the first gear 8 away from the housing 3 has a snap-fit ​​member 9. The snap-fit ​​member 9 is basically cylindrical and coaxial with the first gear 8. The snap-fit ​​member 9 has an annular groove 91 located on a vertical plane. The drive assembly 2 includes a mounting base 21, a second gear 22, a lower limit member 23, and an upper limit member 24. The mounting base 21 is fixedly connected to the base 1. The second gear 22 is located on a vertical plane and rotatably connected to the mounting base 21. The second gear 22 can mesh with the first gear 8. One end of the second gear 22 is connected to a motor drive so that the second gear 22 can rotate under the drive of the motor, thereby driving... The first gear 8 rotates; the lower limit member 23 is fixedly connected to the mounting base 21. The lower limit is basically semi-circular and is set with a corresponding annular groove 91. The lower limit member 23 can be inserted into the annular groove 91 and slidably connected with the snap-fit ​​member 9; the first end 241 of the upper limit member 24 is rotatably connected to the mounting base 21, and the second end 242 of the upper limit member 24 is detachably connected to the mounting base 21. The upper limit member 24 is basically semi-circular and is set with a corresponding annular groove 91. The upper limit member 24 can be inserted into the annular groove 91 and slidably connected with the snap-fit ​​member 9. The upper limit member 24 and the lower limit member 23 are located on the same plane so that after the second end 242 of the upper limit member 24 is connected to the mounting base 21, both the upper limit member 24 and the lower limit member 23 can be inserted into the annular groove 91, thereby preventing the snap-fit ​​member 9 from disengaging from the drive assembly 2.

[0052] The design of the above structure makes the housing 3 detachable, facilitating removal for cleaning and maintenance. It can also be replaced after damage, thus greatly extending the overall service life of the automatic cat toilet. During installation, move the housing 3 so that the lower part of the annular groove 91 on the snap-fit ​​component 9 snaps into the lower limit component 23. Then rotate the upper limit component 24 so that the upper limit component 24 snaps into the upper part of the annular groove 91 and fixes the upper limit component 24 on the mounting base 21, thus completing the connection between the housing 3 and the drive assembly 2. During use, start the motor to make the second gear 22 rotate, which in turn drives the first gear 8 meshing with the second gear 22 to rotate, thus making the housing 3 rotate.

[0053] See appendix Figure 1 and attached Figure 2 It should be noted that, in order to make the appearance of the automatic cat toilet more concise, the motor is built into the mounting base 21 in this embodiment, so the motor is not shown in the attached drawings; furthermore, a cover 25 can also be provided, so that the cover 25 can be detachably connected to the mounting base 21, which is used to cover and protect the first gear 8, the snap-fit ​​9, the second gear 22, the lower limit member 23 and the upper limit member 24, etc., while making it more aesthetically pleasing.

[0054] It should be noted that this application does not limit the way the upper limit member 24 and the mounting base 21 are detachably connected, so it can be flexibly designed according to actual needs, such as using snap-fit ​​connection, threaded connection, etc.

[0055] See appendix Figure 5 Based on the above scheme, the housing 3 can rotate by the cooperation of the lower limit member 23 and the upper limit member 24. During the rotation, friction will inevitably occur between the housing 3 and the lower limit member 23, and between the housing 3 and the upper limit member 24. In order to reduce friction, the following design is made in this embodiment. Specifically, after the housing 3 is connected to the drive component 2, multiple rollers 10 are rotatably connected to the side of the lower limit member 23 near the annular slot 91. The lower limit member 23 is slidably connected to the snap-fit ​​member 9 through the rollers 10. The multiple rollers 10 are evenly distributed.

[0056] With the above structural design, the rollers 10 will also rotate during the rotation of the snap-fit ​​9, thereby effectively reducing the friction between the lower limit member 23 and the snap-fit ​​9; and since the multiple rollers 10 are evenly distributed, the snap-fit ​​9 is subjected to uniform force and is not easy to tilt or deviate; it should be noted that the multiple in this embodiment includes two, that is, two rollers 10 are set on the lower limit member 23.

[0057] Furthermore, multiple rollers 10 can be rotatably connected to the side of the upper limit member 24 near the annular slot 91, which can further reduce the friction force on the locking member 9 during rotation, making it rotate more smoothly and effortlessly.

[0058] Furthermore, a swivel ball or similar component can be used to replace the roller 10, which can also reduce friction.

[0059] See appendix Figure 3 and attached Figure 4 If the side of the housing 3 is only supported by the drive component 2, it may cause uneven force on the housing 3. In order to solve the above problem, the following design is made in this embodiment. Specifically, it also includes a support arm 17. The support arm 17 is set on the other side of the base 1 opposite to the mounting seat 21. The support arm 17 is provided with a groove 11. The housing 3 is provided with a protrusion 12 corresponding to the groove 11. The outer surface of the protrusion 12 is basically cylindrical. The central axis of the protrusion 12 and the rotation axis of the housing 3 are collinear. After the housing 3 is connected to the drive component 2, the protrusion 12 can be inserted into the groove 11 so that the support arm 17 can support the housing 3.

[0060] Through the above structural design, without affecting the disassembly and assembly of the housing 3, the housing 3 can be evenly stressed on both sides after being connected to the drive assembly, and is not easy to be tilted or misaligned.

[0061] See appendix Figure 1 Appendix Figure 3 and attached Figure 4 This application allows contaminated cat litter to be poured out from the opening on the litter box 31 by rotating the housing 3. Therefore, in order to prevent the poured contaminated cat litter from falling onto the base 1, the following design is made in this embodiment. Specifically, the base 1 is provided with a through hole 13 that runs vertically through the base, and the bottom of the base 1 is provided with multiple support feet 14 so that the bottom of the through hole 13 is suspended in the air. The through hole 13 is set to correspond to the opening of the litter box 31.

[0062] The above structural design allows the spilled litter to pass directly through the base 1, thus preventing the base 1 from getting dirty.

[0063] Furthermore, a pad can be provided at the bottom of the support foot 14 for anti-slip cushioning.

[0064] See appendix Figure 1 -Appendix Figure 4 Furthermore, in this embodiment, the following design is implemented: specifically, a collection box 15 is detachably connected to the bottom of the base 1, and the top of the collection box 15 is open and corresponding to the through hole 13.

[0065] With the design of the above structure, the contaminated cat litter poured out from the litter box 31 can fall directly into the inside of the collection box 15, making it easy to recycle and clean.

[0066] See appendix Figure 4 and attached Figure 8 Furthermore, in this embodiment, the following design is implemented: specifically, both the sand bin 31 and the collection box 15 are equipped with a deodorizing box 16, which contains a deodorizing agent.

[0067] The above-mentioned structure design can remove odors from the litter box 31 and collection box 15, creating a good living environment for pet cats, while avoiding odors from affecting the owner's mood.

[0068] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0069] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0070] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic cat litter box, characterized in that, The device includes a base placed on the ground for support. A drive assembly is provided on the base to drive a connected housing to rotate the housing. The housing has a litter box connected to the outside for storing cat litter and accommodating pets. The litter box has a shield and a filter inside. The shield, the filter, and the inner wall of the housing can be enclosed to form a separation cavity. The pivot of the housing is located in a horizontal plane. Taking the horizontal plane passing through the pivot of the housing as the reference plane, and taking the part of the litter box located below the reference plane as the lower part of the litter box, the intersection line of the vertical plane passing through the pivot of the housing and the lower part of the litter box forms a downward convex arc. The lowest point of the arc is the lowest point of the litter box. The downward force of the cat litter along the tangent direction of the arc is greater than the frictional force between the cat litter and the litter box, so that the cat litter in the litter box can quickly gather together. The opening of the litter box passes through the line formed by connecting the lowest points of multiple arcs. The width of the gathered cat litter is smaller than the width of the opening of the litter box, so that the cat litter in the litter box can be poured out of the litter box in one go through the opening of the litter box. The drive assembly drives the housing to rotate forward, allowing the cat litter in the litter box to pass through the filter screen and be separated into clean cat litter and clumped contaminated cat litter. The clean cat litter is then poured into the separation chamber, while the contaminated cat litter is poured out of the litter box. The drive assembly drives the housing to rotate in the opposite direction, allowing the clean cat litter in the separation chamber to be poured back into the litter box.

2. An automatic cat toilet according to claim 1, characterized in that, It also includes a support assembly disposed on the upper surface of the base. The top of the support assembly is slidably connected to the housing for supporting the housing. The outer surface of the housing is substantially a rotating body. The axis of rotation of the housing is located in a horizontal plane and is collinear with the central axis of the housing, so that the top of the support assembly can always abut against the outer surface of the housing, thereby supporting the housing.

3. An automatic cat toilet according to claim 2, characterized in that, The support assembly consists of multiple pulleys to reduce the friction between the support assembly and the housing. The multiple pulleys are evenly distributed to ensure that the housing is subjected to uniform force.

4. An automatic cat toilet according to claim 3, characterized in that, The force exerted by the housing on the pulley is located in the rotational plane of the pulley, which enhances the stability of the pulley and prevents the housing from shifting or becoming misaligned.

5. An automatic cat toilet according to claim 1, characterized in that, The housing has a first gear located on a vertical plane on the side near the drive assembly. A snap-fit ​​element is located at the end of the first gear away from the housing. The snap-fit ​​element is substantially cylindrical and coaxially arranged with the first gear. The snap-fit ​​element has an annular groove located on a vertical plane. The drive assembly includes: Mounting bracket, which is fixedly connected to the base; The second gear is located in a vertical plane and rotatably connected to the mounting base. The second gear can mesh with the first gear. One end of the second gear is connected to a motor drive so that the second gear can rotate under the drive of the motor, thereby driving the first gear to rotate. A lower limit component is fixedly connected to the mounting base. The lower limit component is basically semi-circular and is set corresponding to the annular slot. The lower limit component can be inserted into the annular slot and slidably connected to the snap-fit ​​component. An upper limit stop is provided, with its first end rotatably connected to the mounting base and its second end detachably connected to the mounting base. The upper limit stop is substantially semi-circular and corresponds to the annular slot. The upper limit stop can be inserted into the annular slot and slidably connected to the snap-fit ​​component. The upper limit stop and the lower limit stop are located on the same plane, so that after the second end of the upper limit stop is connected to the mounting base, both the upper limit stop and the lower limit stop can be inserted into the annular slot, thereby preventing the snap-fit ​​component from detaching from the drive assembly.

6. An automatic cat toilet according to claim 5, characterized in that, After the housing is connected to the drive assembly, the lower limit member is rotatably connected to a plurality of rollers on the side near the annular slot. The lower limit member is slidably connected to the snap-fit ​​member through the rollers to reduce the friction between the lower limit member and the snap-fit ​​member. The plurality of rollers are evenly distributed to ensure that the snap-fit ​​member is subjected to uniform force.

7. An automatic cat toilet according to claim 5, characterized in that, It also includes a support arm, which is disposed on the other side of the base opposite to the mounting seat. The support arm has a groove, and the housing has a protrusion corresponding to the groove. The outer surface of the protrusion is basically cylindrical. The central axis of the protrusion and the rotation axis of the housing are collinear. After the housing is connected to the drive assembly, the protrusion can be inserted into the groove so that the support arm can support the housing, thereby making the opposite sides of the housing evenly stressed.

8. An automatic cat toilet according to any one of claims 1-7, characterized in that, The base has a through hole running vertically through it, and the bottom of the base has multiple support feet to suspend the bottom of the through hole. The through hole is set to correspond to the opening of the litter box to prevent contaminated cat litter poured out of the litter box from falling onto the base.

9. An automatic cat toilet according to claim 8, characterized in that, The base is detachably connected to a collection box at its bottom. The top of the collection box is open and corresponds to the through hole, so that contaminated cat litter poured out from the litter box can fall into the interior of the collection box.

10. An automatic cat toilet according to claim 9, characterized in that, Both the sand bin and the collection box are equipped with deodorizing boxes, which contain deodorizing agents to remove odors from the sand bin and the collection box, respectively.

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