Cat litter box with automatic cleaning function

Abstract

The application provides a litter box with an automatic cleaning function, comprising a main body assembly, a bottom foot assembly, a sand bin assembly arranged on the main body assembly and comprising a bin body and a filter screen, the bin body having a sand bin and a separation bin, the filter screen being arranged between the sand bin and the separation bin and used for separating the sand bin and the separation bin, a bin opening being arranged on the bin body, and a driving mechanism used for driving the sand bin assembly to rotate by 360 degrees along a first direction, so that the sand bin assembly rotates from an initial position to a separation position and a feces collecting position in sequence and then returns to the initial position; when the sand bin assembly rotates from the initial position to the separation position, the filter screen separates cat feces from cat litter, the cat litter passes through the filter screen and enters the separation bin, and the cat feces is retained in the sand bin; when the sand bin assembly rotates to the feces collecting position, the bin opening is in communication with a feces collecting opening at the bottom of the main body assembly, and the cat feces in the sand bin falls along the filter screen into the feces collecting opening and is discharged. The litter box provided by the application realizes automatic cleaning of cat litter through 360-degree rotation, is simple and convenient to operate, reduces energy consumption, and prolongs the service life.

Description

Technical Field

[0001] This application belongs to the field of pet equipment technology, and in particular relates to a cat litter box with an automatic cleaning function. Background Technology

[0002] A litter box is a container for cats to eliminate waste. It usually contains cat litter, which absorbs the cat's urine and covers its feces, helping to control odor and maintain hygiene. To keep it clean, the litter needs to be cleaned regularly and the litter changed periodically.

[0003] Existing open litter boxes generally use a back-and-forth rotation method to separate cat feces from the litter. Due to the small rotation angle, it is difficult to separate the cat feces completely, and the cat feces and litter stuck to the inner wall of the litter box are not easy to clean, resulting in a bad smell. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of this application is to provide a cat litter box with an automatic cleaning function.

[0005] The technical solution adopted in this application embodiment is a litter box with an automatic cleaning function, including a main body assembly and a foot assembly disposed at the bottom of the main body assembly, and further including: A sand silo assembly is mounted on the main body assembly and includes a silo body and a filter screen. The silo body has a sand silo and a separation silo. The filter screen is located between the sand silo and the separation silo to separate the sand silo and the separation silo. The silo body has a silo opening that communicates with the sand silo. A drive mechanism, which is disposed on the main body assembly, is used at least to drive the sand hopper assembly to rotate 360° on the main body assembly along a first direction, so that the sand hopper assembly rotates sequentially from the initial position by a first preset angle, a second preset angle and a third preset angle, and sequentially reaches the separation position and the collection position, and then returns to the initial position. When the litter box assembly is in its initial position, the separation chamber is in a high position away from the main body assembly, and the litter box is in a low position close to the main body assembly, used to hold cat litter and cat feces. When the litter box assembly rotates to the separation position, the filter screen separates the cat feces from the cat litter, allowing the cat litter to pass through the filter screen into the separation chamber, while the cat feces remain in the litter box. When the litter box assembly rotates to the feces collection position, the box opening connects with the feces collection port at the bottom of the main body assembly, and the cat feces in the litter box fall along the filter screen under the action of gravity and are discharged from the feces collection port.

[0006] In an optional embodiment, the litter box assembly rotates 360° along a first direction to return to its initial position. After the cat litter in the separation compartment falls into the litter box through the filter, the driving mechanism is further used to drive the litter box assembly to rotate a fourth preset angle along a second direction opposite to the first direction, then rotate a fifth preset angle along the first direction, and finally rotate a sixth preset angle along the second direction to return to the initial position, thereby smoothing the cat litter in the litter box; wherein the fourth preset angle is smaller than the fifth preset angle. The driving mechanism drives the litter box assembly to rotate back and forth in two opposite directions, causing the litter box assembly to shake and smoothing the cat litter in the litter box when it returns to its initial position.

[0007] In an optional embodiment, the driving mechanism is further configured to, when the litter box assembly is in the initial state, drive the litter box assembly to rotate a seventh preset angle along the first direction or an eighth preset angle along a second direction opposite to the first direction, so that the opening of the litter box connects with the collection port, and the cat litter in the litter box is discharged from the collection port under the action of gravity. The driving mechanism then drives the litter box assembly to continue rotating along the first direction or the second direction to the initial state, or the driving mechanism then drives the litter box assembly to rotate in the opposite direction to the initial position. Driving the litter box assembly to rotate via the driving mechanism automatically discharges the cat litter, facilitating litter replacement.

[0008] In an optional embodiment, the main body assembly has an upward-facing concave cavity, the compartment body is a cylindrical shape with a notch forming the compartment opening, a portion of the compartment body is placed inside the concave cavity, and the two ends of the compartment body in the axial direction are rotatably connected to the left and right cavity walls opposite to the concave cavity, respectively; the compartment body has a horizontal cross-section passing through the axis of the compartment body and a vertical longitudinal section passing through the axis of the compartment body, the cross-section and the longitudinal section are cross-shaped, the cross-section divides the longitudinal section into a first part longitudinal section and a second part longitudinal section located on both sides of the cross-section, and the longitudinal section divides the cross-section into a first part cross-section and a second part cross-section located on both sides of the longitudinal section; When the litter box assembly is in its initial state, the lower edge of the box opening is flush with or above and close to the leading edge of the cavity opening, and the lower edge of the box opening is below the first partial cross-section; the upper edge of the box opening is above the first partial cross-section and close to the first partial longitudinal section. The position and size of the box opening are reasonable, facilitating cat entry and litter addition, and the separation and discharge of cat feces are achieved through rotation at a reasonable angle.

[0009] In an optional embodiment, when the litter box assembly is in the initial state, at least a portion of the filter screen is located below the second portion of the cross-section. The filter screen position, in conjunction with the position of the bin opening, ensures that after the litter box assembly rotates to a reasonable angle and the filter screen separates the cat feces, the bin opening rotates precisely to align with the feces collection port of the main body assembly, allowing the cat feces to be discharged from the collection port.

[0010] In an optional embodiment, the first preset angle is 175° to 185°; The second preset angle is 45° to 55°; The third preset angle is 125° to 135°; The fourth preset angle is 55° to 65°; The fifth preset angle is 325° to 335°; The sixth preset angle is 265° to 275°; the angle range is set reasonably, with high efficiency and low energy consumption.

[0011] In an optional embodiment, the hopper includes a body and a roof. The body has an opening with a flush perimeter. The front perimeter of the opening forms the lower edge of the hopper opening. One side of the roof connects to the rear perimeter and part of the left and right perimeters of the opening. The other side of the roof bends inward into the body and connects to one perimeter of the filter screen. The perimeter of the filter screen, except for that one perimeter, connects to the inner wall of the body. The bent portion of the roof forms the upper edge of the hopper opening. The body and roof working together to form the hopper facilitate manufacturing and allow for proper placement of the filter screen within the hopper.

[0012] In an optional embodiment, the tops of the left and right walls of the concave cavity are recessed downwards to form arc-shaped assembly grooves; the sand silo assembly also includes support bodies respectively disposed on both sides of the axial direction of the silo body, the support bodies being rotatably disposed in the assembly grooves, and one of the support bodies being connected to a driven gear; The drive mechanism includes a motor, and a drive gear is connected to the output shaft of the motor. The drive gear meshes with the driven gear. When the motor rotates, it drives the drive gear to rotate, which in turn drives the sand hopper assembly to rotate.

[0013] In an optional embodiment, the support body includes an outer ring body and an inner ring body located within the outer ring body. The outer ring body is rotatably disposed within the assembly groove, and the outer peripheral surface of the outer ring body mates with the arc surface of the assembly groove. The litter box also includes two handles, each with a positioning part protruding from its inner upper side. The two handles are respectively engaged with the outer sides of the two support bodies, and the positioning parts of the two handles extend into the inner rings of the two support bodies for axial positioning. The positioning parts prevent axial displacement of the litter box assembly during rotation, ensuring stability during rotation.

[0014] In an optional embodiment, the driven gear is fixed between the outer ring and the inner ring of one of the supports, and the driven gear protrudes axially from the outer ring so as to be exposed and mesh with the driving gear; and / or The main body component has a locking groove that communicates with the cavity and is located outside the cavity. When the handle is fastened to the outside of the support body, its lower part is locked into the locking groove to fix the handle, thereby ensuring the stability of the sand hopper component during rotation.

[0015] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: the cat litter box of this application achieves automatic cleaning of cat litter by rotating 360 degrees, which is simple and convenient to operate, reduces energy consumption, and extends service life.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0017] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0018] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts.

[0019] Figure 1 This is a schematic diagram of the structure of a cat litter box according to an embodiment of this application.

[0020] Figure 2 This is an exploded view of a litter box according to an embodiment of this application.

[0021] Figure 3 for Figure 1 The AA-direction cross-section shows the sand bin assembly in its initial state.

[0022] Figure 4 and Figure 5 These are structural schematic diagrams of the sand silo assembly from different perspectives, representing embodiments of this application.

[0023] Figure 6 This is an exploded view of the sand bin assembly according to an embodiment of this application.

[0024] Figure 7 for Figure 1 BB-directed cross-section.

[0025] Figure 8 for Figure 7 Enlarged view of section C.

[0026] Figure 9 This is a diagram showing the cooperation relationship between the drive mechanism and the driven gear in an embodiment of this application.

[0027] Figure 10 This is a schematic diagram of the structure of the sand hopper assembly and the base assembly separated in an embodiment of this application, wherein part of the outer shell of the base assembly has been removed.

[0028] Figure 11 This is a schematic diagram of the structure combining the canopy and the filter screen according to an embodiment of this application.

[0029] Figure 12 This is a schematic diagram of the cat feces cleaning process according to an embodiment of this application.

[0030] Figure 13 This is a schematic diagram of the cat litter replacement process according to an embodiment of this application.

[0031] Figure label: 1-Main body assembly; 11-Collection port; 12-Cavity; 13-Assembly slot; 14-Matching slot; 2-Base assembly; 21-Base; 22-Foot; 23-Collection chamber; 3-Sand silo assembly; 31-Silo body; 311-Silo frame; 312-Silo opening; 3121-Lower edge; 3122-Upper edge; 313-Roof; 314-First cross-section; 315-Second cross-section; 316-First longitudinal section; 317-Second longitudinal section; 32-Filter screen; 33-Sand silo; 34-Separation silo; 35-Support body; 351-Outer ring; 352-Inner ring; 4-Driven gear; 5-Motor; 6-Driving gear; 7-Handle; 71-Positioning part; 8-Cat litter; 9-Cat feces. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0033] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0035] This application provides a litter box with an automatic cleaning function. For example... Figures 1 to 3 As shown, the litter box includes a main body assembly 1, a base assembly 2, a litter bin assembly 3, and a drive mechanism. The base assembly 2 is located at the bottom of the main body assembly 1 and is used to support and hold the main body assembly 1.

[0036] like Figures 3 to 6 As shown, the litter box assembly 3 is mounted on the main body assembly 1 and includes a box body 31 and a filter screen 32. The box body 31 contains a litter box 33 and a separation box 34. The filter screen 32 is located between the litter box 33 and the separation box 34 to separate them. The box body 31 has a box opening 312 that communicates with the litter box 33. Cat litter 8 can be loaded into the litter box 33 through the box opening 312, and the cat can enter the litter box 33 through the box opening 312 to defecate.

[0037] like Figure 7 and Figure 8 As shown, the drive mechanism is mounted on the main body assembly 1 and is used to drive the sand hopper assembly 3 to rotate 360° along the first direction on the main body assembly 1, so that the sand hopper assembly 3 rotates sequentially from the initial position by a first preset angle, a second preset angle, and a third preset angle, and sequentially reaches the separation position (see...). Figure 12-2 ) and the location of the stool collection point (see Figure 12-4 After that, reset to the initial position (see...). Figure 12-1 ).

[0038] like Figure 3 As shown, when the litter box assembly 3 is in its initial position, the separation chamber 34 is in a high position away from the main body assembly 1, and the litter box 33 is in a low position close to the main body assembly 1, and is used to hold cat litter 8 and cat feces 9; when the litter box assembly 3 rotates to the separation position, the filter screen 32 separates the cat feces 9 from the cat litter 8 (the volume of cat feces 9 is larger than the volume of cat litter 8, thus achieving separation), allowing the cat litter 8 to pass through the filter screen 32 into the separation chamber 34, while the cat feces 9 remains in the litter box 33, see [link to relevant documentation]. Figure 12-2 When the litter box assembly 3 rotates to the waste collection position, the opening 312 connects with the waste collection port 11 at the bottom of the main body assembly 1. The feces 9 inside the litter box 33 fall along the filter screen 32 under gravity and are discharged through the waste collection port 11. (See attached image) Figure 12-4 .

[0039] The litter box of this embodiment can rotate 360 ​​degrees in a first direction, and during the 360-degree rotation, it automatically separates cat feces 9 (including clumped cat litter) from cat litter 8, and discharges the separated cat feces 9 from the collection port 11, thus completing the automatic cleaning of cat litter 8. It is simple and convenient to use, reduces the starting and stopping of the drive mechanism, saves energy, and extends service life.

[0040] In some embodiments, the litter box assembly 3 rotates 360° in a first direction to return to its initial position. After the cat litter 8 in the separation chamber 34 falls into the litter box 33 through the filter screen 32, the drive mechanism is further used to drive the litter box assembly 3 to rotate a fourth preset angle in a second direction opposite to the first direction, then rotate a fifth preset angle in the first direction, and finally rotate a sixth preset angle in the second direction to return to its initial position, thereby smoothing the cat litter 8 in the litter box 33; wherein the fourth preset angle is smaller than the fifth preset angle. The drive mechanism drives the litter box assembly 3 to rotate back and forth in two opposite directions, causing the litter box assembly 3 to shake, and achieving the effect of smoothing the cat litter 8 in the litter box 33 when it returns to its initial position. Using different rotation angles in two opposite directions can increase the shaking degree of the cat litter 8, achieving a better smoothing effect. Moreover, the cat litter reset and smoothing time is short and the efficiency is high.

[0041] In some embodiments, such as Figure 13 As shown, the drive mechanism is also used to drive the litter box assembly 3 to rotate a seventh preset angle in the first direction or an eighth preset angle in the second direction when the litter box assembly 3 is in the initial state, so that the collection port 11 of the bin opening 312 is connected, and the cat litter 8 in the litter box 33 is discharged from the collection port 11 under the action of gravity. See Figure 13-2The drive mechanism then drives the sand hopper assembly 3 to continue rotating along the first or second direction back to its initial state, thus resetting the sand hopper assembly 3. (See below) Figure 13-3 Alternatively, after all the cat litter 8 in the litter box 33 has been expelled, the drive mechanism can also drive the litter box assembly 3 to rotate in the opposite direction back to its initial position. That is, when the litter box assembly 3 rotates a seventh preset angle in the first direction to expel the cat litter 8, the drive mechanism drives the litter box assembly 3 to rotate a seventh preset angle in the second direction back to its initial position; when the litter box assembly 3 rotates an eighth preset angle in the second direction to expel the cat litter 8, the drive mechanism drives the litter box assembly 3 to rotate an eighth preset angle in the first direction back to its initial position. In other words, after expelling the cat litter 8, the litter box assembly 3 can continue to rotate in the original direction to reset, or it can rotate in the opposite direction to reset. Then, new cat litter is added to the litter box 33 through the opening 312. This application can automatically expel the cat litter 8 by driving the litter box assembly 3 to rotate through the drive mechanism, making it convenient to replace the cat litter 8.

[0042] After adding new cat litter, you can use the litter cleaning method ( Figure 12-8 to Figure 12-10 Cat litter smoothing operation.

[0043] In some embodiments, such as Figure 2 and Figure 10 As shown, the main body assembly 1 has an upward-facing cavity 12, and the storage chamber 31 is a cylindrical shape with a notch forming the storage opening 312. A portion (lower part) of the storage chamber 31 is placed inside the cavity 12, and the two ends of the storage chamber 31 in the axial direction are rotatably connected to the left and right walls of the cavity 12, respectively, so that the sand storage chamber assembly 3 can rotate relative to the main body assembly 1 under the driving action of the drive mechanism. The storage chamber 31 has a horizontal cross-section passing through the axis of the storage chamber 31 and a vertical longitudinal section passing through the axis of the storage chamber 31. The cross-section and the longitudinal section intersect in a cross shape. The cross-section divides the longitudinal section into a first longitudinal section 316 and a second longitudinal section 317 located on both sides of the cross-section, and the longitudinal section divides the cross-section into a first cross-section 314 and a second cross-section 315 located on both sides of the longitudinal section. When the litter box assembly 3 is in its initial state, the lower edge 3121 of the opening 312 is flush with or above and close to the leading edge of the cavity 12, and the lower edge 3121 of the opening 312 is below the first partial cross-section 314; the upper edge 3122 of the opening 312 is above the first partial cross-section 314 and close to the first partial longitudinal section 316. The position and size of the opening 312 are reasonable, facilitating the cat's entry and the addition of cat litter 8, and through a reasonable angle of rotation, the cat feces 9 can be separated and discharged.

[0044] For example, such as Figure 3As shown, the longitudinal and transverse sections intersect to form the axis of the compartment 31. The line connecting the lower edge 3121 of the compartment opening 312 and the axis is L1. The angle between L1 and the second longitudinal section 317 is approximately 65° to 75°. For example, Figure 3 The angle shown is 70°. The line connecting the upper edge 3122 of the opening 312 and the axis is L2. The angle between L2 and the longitudinal section 316 of the first part is approximately 15° to 25°. For example, Figure 3 The angle shown is 20°. In its initial position, the sand silo assembly is closed off directly above it.

[0045] In some embodiments, continue to combine Figure 3 When the litter box assembly 3 is in its initial state, at least part of the filter screen 32 is located below the second cross-section 315. The position of the opening 312 is set in conjunction with the position of the filter screen 32 so that after the litter box assembly 3 has turned to a reasonable angle and the filter screen 32 has separated from the cat feces 9, the opening 312 is just rotated to be opposite to the collection port 11 of the main body assembly 1, so that the cat feces 9 can be discharged from the collection port 11.

[0046] In some embodiments, such as Figure 6 As shown, the hopper 31 includes a hopper body 311 and a roof 313. The hopper body 311 has an opening, and the perimeter of the opening is flush, i.e., roughly on the same plane. The front perimeter of the opening forms the lower edge 3121 of the hopper opening 312. One side of the roof 313 connects to the rear perimeter and part of the left and right perimeters of the opening of the hopper body 311. The other side of the roof 313 bends inward into the hopper body 311 and connects to one perimeter of the filter screen 32. See [reference needed]. Figure 11 The periphery of the filter screen 32, except for the periphery on this side, is connected to the inner wall of the chamber body 311, and the bent portion of the roof 313 forms the upper edge 3122 of the chamber opening 312. The chamber body 31 and the roof 313 are combined to form the chamber body 31, which is convenient for processing and facilitates the installation of the filter screen 32 inside the chamber body 31.

[0047] In some embodiments, such as Figure 2 and Figure 10 As shown, the tops of the left and right cavity walls of the recessed cavity 12 of the main body assembly 1 are respectively recessed downwards to form arc-shaped assembly grooves 13. For example... Figure 4 and Figure 10 As shown, the sand silo assembly 3 also includes support bodies 35 respectively located on both sides of the silo body 31 in the axial direction. The support bodies 35 are rotatably disposed in the assembly groove 13, and a driven gear 4 is connected to one of the support bodies 35.

[0048] like Figures 7 to 9As shown, the drive mechanism includes a motor 5, and a drive gear 6 is connected to the output shaft of the motor 5. The drive gear 6 meshes with a driven gear 4. When the motor 5 rotates, it drives the drive gear 6 to rotate, which in turn drives the driven gear 4 to rotate, and the driven gear 4 to rotate the sand hopper assembly 3. Using the motor 5 as the drive mechanism makes it easy to drive the drive gear 6 and the driven gear 4 to rotate in both directions, thereby enabling the sand hopper assembly 3 to rotate in either a first or second direction.

[0049] In some embodiments, such as Figure 6 and Figure 10 As shown, the support body 35 includes an outer ring body 351 and an inner ring body 352 located within the outer ring body 351. The outer ring body 351 is rotatably disposed within the assembly groove 13, and its outer circumferential surface mates with the arc surface of the assembly groove 13. The litter box also includes two handles 7, each with a positioning part 71 protruding from its inner upper side. The two handles 7 are respectively fastened to the outer sides of the two support bodies 35, and the positioning parts 71 of the two handles 7 extend into the inner ring bodies 352 of the two support bodies 35 to axially position the two support bodies 35 respectively. The positioning parts 71 prevent axial displacement of the litter box assembly 3 during rotation, ensuring stability during rotation. The specific structure of the positioning parts 71 is not specifically limited; for example, it can be a short tube to facilitate insertion into the inner ring body 352 without excessively increasing the overall weight of the litter box.

[0050] like Figure 4 As shown, the driven gear 4 is fixed to one of the supports 35. Figure 6 The outer ring 351 (on the right side of the middle ring) is between the inner ring 352 and the outer ring 351, and the driven gear 4 protrudes axially from the outer ring 351 so as to be exposed and mesh with the driving gear 6.

[0051] like Figure 2 As shown, the main body component 1 has a locking groove 14 that communicates with the cavity 12 and is located outside the cavity 12. When the handle 7 is fastened to the outside of the support body 35, its lower part is locked into the locking groove 14 to fix the handle 7.

[0052] like Figure 1 and Figure 2 As shown, the base assembly 2 includes a base 21 and four feet 22 located at the bottom of the base 21 to support the base 21. The bottom of the base 21 is provided with a feces collection chamber 23 that communicates with the feces collection port 11. Cat feces 9 and cat litter 8 discharged from the feces collection port 11 fall into the feces collection chamber 23 for collection.

[0053] The aforementioned preset angles are determined based on the placement position of the opening 312. Given the structure of the chamber body 31 shown in the figure, and the placement positions of the opening 312 and filter screen 32 on the chamber body 31, the first preset angle is 175°–185°; the second preset angle is 45°–55°; the third preset angle is 125°–135°; the fourth preset angle is 55°–65°; the fifth preset angle is 325°–335°; the sixth preset angle is 265°–275°; the seventh preset angle is 255°–265°; and the eighth preset angle is 95°–105°.

[0054] The following is combined Figure 12 and Figure 13 The operation process of cleaning cat feces 9 and changing cat litter 8 according to the embodiments of this application is described as follows: Cat litter cleaning: When the litter box is not in use, the litter compartment component 3 is in the position. Figure 12-1 The initial position. The litter box 33 contains cat litter 8 mixed with cat feces 9. When the litter box begins cleaning, the motor 5 drives the litter box assembly 3 to rotate in the first direction (clockwise is used as an example in this application). When it rotates to the first preset angle of 180°, the litter box assembly 3 reaches the separation position, and the clumps of cat feces 9 (and cat litter clumps) are separated from the cat litter 8. See [link to relevant documentation]. Figure 12-2 Motor 5 drives the litter box assembly 3 to continue rotating clockwise by 10°, gradually connecting the litter box opening 312 with the feces collection opening 11. Cat feces 9 and clumps begin to fall into the feces collection box 23 through the feces collection opening 11. (See also...) Figure 12-3 When litter box assembly 3 continues to rotate clockwise by 40°, it reaches the collection position, and all cat feces 9 and clumps are poured into the collection chamber 23. The cleaning of cat feces 9 is complete. See below. Figure 12-4 . Figure 12-3 and Figure 12-4 The operation of the medium sand silo component 3 together constitutes the waste collection process. Figure 12-3 and Figure 12-4 The angle through which they rotate together is the second preset angle of 50°.

[0055] Motor 5 drives litter box assembly 3 to continue rotating clockwise by a third preset angle of 130°, reaching the initial position. The process of litter box assembly 3 moving from the waste collection process to the initial position specifically includes the following three steps: First, motor 5 drives litter box assembly 3 to continue rotating clockwise by 40°. This rotational motion of litter box assembly 3 cleans the cat litter 8 and cat feces 9 adhering to the box wall and causes them to fall into the waste collection bin 23. (See [link]). Figure 12-5 In the second step, motor 5 drives the litter box assembly 3 to continue rotating clockwise by 50°. The cat litter 8 in the separation chamber 34 slowly tilts and flows through the filter screen 32 into the litter box 33. (See below) Figure 12-6In the third step, the litter box assembly 3 continues to rotate clockwise by 40°. When it returns to its initial position, all the cat litter 8 in the separation chamber 34 flows out from the filter screen 32 into the litter box 33. (See below) Figure 12-7 .

[0056] Motor 5 drives litter box assembly 3 to continue rotating clockwise by the fourth preset angle of 60°, performing litter smoothing work. (See below) Figure 12-8 At this point, sand chamber component 3 pauses and then rotates counterclockwise by the fifth preset angle of 330°, see [reference]. Figure 12-9 Continue smoothing the litter box (step 8); at this point, the litter box assembly (step 3) pauses and then rotates clockwise by the sixth preset angle of 270° to reach the initial state. See [link / reference]. Figure 12-10 Completely smooth out the cat litter 8.

[0057] Cat litter changing: When the litter box is not in use, the litter compartment component 3 is in the position. Figure 13-1 The initial position. Motor 5 drives litter box assembly 3 to rotate counterclockwise. When it rotates to the seventh preset angle of 100°, the bin opening 312 is aligned with the waste collection opening 11, and all the cat litter 8 is poured into the waste collection bin 23. See below. Figure 13-2 At this point, sand chamber assembly 3 pauses and then rotates clockwise, turning 100° clockwise back to its initial position. See [link / reference]. Figure 13-3 Manually add new cat litter into litter box 33 through opening 312, then restart. Figure 12-8 Smooth the cat litter to step 8 (step 12-10).

[0058] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A litter box with an automatic cleaning function, comprising a main body assembly (1) and a base assembly (2) disposed at the bottom of the main body assembly (1), characterized in that, Also includes: A sand silo assembly (3) is mounted on the main body assembly (1) and includes a silo body (31) and a filter screen (32). The silo body (31) contains a sand silo (33) and a separation silo (34). The filter screen (32) is located between the sand silo (33) and the separation silo (34) to separate the sand silo (33) and the separation silo (34). The silo body (31) has a silo opening (312) communicating with the sand silo (33). The driving mechanism is located on the main body assembly (1) and is used to drive the sand hopper assembly (3) to rotate 360° on the main body assembly (1) in the first direction, so that the sand hopper assembly (3) rotates from the initial position to the first preset angle, the second preset angle and the third preset angle in sequence, and then reaches the separation position and the collection position in sequence, and then returns to the initial position. When the litter box assembly (3) is in its initial position, the separation chamber (34) is in a high position away from the main body assembly (1), and the litter box (33) is in a low position close to the main body assembly (1) and is used to hold cat litter and cat feces. When the litter box assembly (3) rotates to the separation position, the filter screen (32) separates the cat feces from the cat litter, allowing the cat litter to pass through the filter screen (32) into the separation chamber (34), while the cat feces remain in the litter box (33). When the litter box assembly (3) rotates to the feces collection position, the opening (312) is connected to the feces collection port (11) at the bottom of the main body assembly (1), and the cat feces in the litter box (33) fall along the filter screen (32) under the action of gravity and are discharged from the feces collection port (11).

2. The litter box with automatic cleaning function according to claim 1, characterized in that, The litter box assembly (3) rotates 360° along the first direction to return to the initial position. After the cat litter in the separation chamber (34) falls into the litter box (33) through the filter screen (32), the driving mechanism is also used to drive the litter box assembly (3) to rotate a fourth preset angle along the second direction opposite to the first direction, then rotate a fifth preset angle along the first direction, and rotate a sixth preset angle along the second direction to return to the initial position, so as to smooth the cat litter in the litter box (33); wherein the fourth preset angle is smaller than the fifth preset angle.

3. The litter box with automatic cleaning function according to claim 1, characterized in that, The driving mechanism is also used to drive the litter box assembly (3) to rotate a seventh preset angle along the first direction or an eighth preset angle along the second direction opposite to the first direction when the litter box assembly (3) is in the initial state, so that the opening (312) is connected to the collection port (11) and the cat litter in the litter box (33) is discharged from the collection port (11) under the action of gravity. The driving mechanism then drives the litter box assembly (3) to continue rotating along the first direction or the second direction to the initial state, or the driving mechanism then drives the litter box assembly (3) to rotate in the opposite direction to the initial position.

4. The litter box with automatic cleaning function according to claim 2, characterized in that, The main body assembly (1) has an upward-facing concave cavity (12), and the compartment body (31) is a cylindrical shape with a notch, the notch forming the compartment opening (312). A portion of the compartment body (31) is placed inside the concave cavity (12), and the two ends of the compartment body (31) in the axial direction are rotatably connected to the left and right walls of the concave cavity (12), respectively. The compartment body (31) has a horizontal cross section passing through the axis of the compartment body (31) and a vertical longitudinal section passing through the axis of the compartment body (31). The cross section and the longitudinal section are cross-shaped. The cross section divides the longitudinal section into a first longitudinal section (316) and a second longitudinal section (317) located on both sides of the cross section. The longitudinal section divides the cross section into a first cross section (314) and a second cross section (315) located on both sides of the longitudinal section. When the sand silo assembly (3) is in the initial state, the lower edge (3121) of the silo opening (312) is flush with or above the front edge of the cavity opening (12) and close to the front edge of the cavity opening, and the lower edge (3121) of the silo opening (312) is below the first partial cross section (314); the upper edge (3122) of the silo opening (312) is above the first partial cross section (314) and close to the first partial longitudinal section (316).

5. The litter box with automatic cleaning function according to claim 4, characterized in that, When the sand hopper assembly (3) is in the initial state, at least a portion of the filter screen (32) is located below the second partial cross section (315).

6. The litter box with automatic cleaning function according to claim 5, characterized in that, The first preset angle is 175° to 185°; The second preset angle is 45° to 55°; The third preset angle is 125° to 135°; The fourth preset angle is 55° to 65°; The fifth preset angle is 325° to 335°; The sixth preset angle is 265° to 275°.

7. The litter box with automatic cleaning function according to claim 4, characterized in that, The hopper (31) includes a hopper body (311) and a roof (313). The hopper body (311) has an opening with a flush perimeter. The front perimeter of the opening forms the lower edge (3121) of the hopper opening (312). One side of the roof (313) is connected to the rear perimeter and part of the left and right perimeters of the opening. The other side of the roof (313) bends inward toward the hopper body (311) and connects to one perimeter of the filter screen (32). The perimeters of the filter screen (32), except for the perimeter of that side, are connected to the inner wall of the hopper body (311). The bent part of the roof (313) forms the upper edge (3122) of the hopper opening (312).

8. The litter box with automatic cleaning function according to claim 4, characterized in that, The top of the left and right walls of the cavity (12) are recessed downward to form an arc-shaped assembly groove (13); the sand silo assembly (3) also includes a support body (35) respectively disposed on both sides of the axial direction of the silo body (31), the support body (35) is rotatably disposed in the assembly groove (13), and a driven gear (4) is connected to one of the support bodies (35). The drive mechanism includes a motor (5), and a drive gear (6) is connected to the output shaft of the motor (5). The drive gear (6) meshes with the driven gear (4). When the motor (5) rotates, it drives the drive gear (6) to drive the driven gear (4) to rotate. The driven gear (4) drives the sand silo assembly (3) to rotate.

9. The litter box with automatic cleaning function according to claim 8, characterized in that, The support body (35) includes an outer ring body (351) and an inner ring body (352) located inside the outer ring body (351). The outer ring body (351) is rotatably disposed in the assembly groove (13), and the outer peripheral surface of the outer ring body (351) is engaged with the arc surface of the assembly groove (13). The litter box also includes two handles (7), and the upper inner side of the two handles (7) is provided with positioning parts (71). The two handles (7) are respectively fastened to the outer side of the two supports (35), and the positioning parts (71) of the two handles (7) extend into the inner ring (352) of the two supports (35) respectively, for axial positioning of the two supports (35).

10. The litter box with automatic cleaning function according to claim 9, characterized in that, The driven gear (4) is fixed between the outer ring (351) and inner ring (352) of one of the supports (35), and the driven gear (4) protrudes axially from the outer ring (351) so as to be exposed and mesh with the driving gear (6); and / or The main body assembly (1) has a locking groove (14) that communicates with the cavity (12) and is located outside the cavity (12). When the handle (7) is fastened to the outside of the support body (35), its lower part is locked into the locking groove (14).

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