Automatic cat litter box

Abstract

This invention relates to the technical field of animal feces or urine removal devices, and in particular to an automatic cat litter box. The invention includes a litter box body, a litter box base, a cleaning device, an electronic control module, and a waste collection device. The waste collection device is located in the rear area of ​​the litter box body, and the cleaning device is mounted on the litter box base. The litter box body is rotatably mounted on the litter box base. The cleaning device includes a flipping rod, with its two ends along its length being a first end and a second end, respectively. The first end of the flipping rod is fixedly connected to a third rotary transmission component, and the second end of the flipping rod is movably connected to a litter shovel. The litter shovel rotates relative to the second end of the flipping rod around the axis of the litter shovel's rotation within a set angle range. The third rotary transmission component enables the litter shovel to switch between a waste disposal position, a litter shoveling position, and a litter wiping position, making it easier for the litter shovel to scoop litter clumps into the waste collection device and improving the smoothing effect on the surface of the litter.

Description

Technical Field

[0001] This invention relates to the technical field of animal feces or urine removal devices, and in particular to an automatic cat litter box. Background Technology

[0002] A litter box is a container product used by pet cats for excretion. It generally includes a bowl and other related structures, with the bowl having a receiving cavity. When in use, cat litter is placed in the cavity, and the feline will defecate on the litter. Afterward, the excrement and litter will form a litter clump. To provide a clean excretion environment for the feline, it is usually necessary to separate the litter and litter clumps from the receiving cavity and clean the litter clumps.

[0003] Existing manual litter boxes usually require owners to separate the litter from the litter clumps in the container and clean the litter clumps. This manual cleaning method is relatively laborious, and the odor and dirt in the container are very impactful to the owner, resulting in a poor user experience and failing to fully meet the owner's needs.

[0004] In addition, Chinese patent document CN223335294U discloses an intelligent cat litter box, including a basin body, a cleaning component, a waste collection box, and a rotary drive mechanism; the basin body has a litter bin; the waste collection box is detachably mounted on the basin body; the cleaning component is rotatably mounted in the litter bin; the rotary drive mechanism is mounted on the basin body and is connected to the cleaning component; the rotary drive mechanism can drive the cleaning component to rotate, so as to clean the waste in the litter bin into the waste collection box. The cleaning component can preferably be a scraper with a shovel at one end of its bottom. This shovel is bent towards the litter box cover and designed as a filter. However, the rotation drive mechanism corresponding to the cleaning component is a single fixed rotating structure (rotating around a fixed axis). The movement trajectory of the cleaning component is arc-shaped. During each cleaning, the cleaning component is in the upward motion, keeping its lower end at an inclined angle so that the litter clump falls into the litter box under gravity. This working method may leave feces in the litter box, causing cleaning failure. At the same time, the cleaning component does not have a flat pushing or raking action during its return process, resulting in poor smoothing effect on the surface of the litter. Furthermore, the litter box also needs to be cleaned manually, which is inconvenient for users. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic litter box that makes it easier to scoop litter clumps into the collection device with a litter scoop and improves the smoothing effect on the surface of the litter.

[0006] The technical solution adopted by this invention to solve the above-mentioned technical problems is as follows: an automatic litter box, including a box body, a litter box seat, a cleaning device, an electronic control module, and a litter collection device; the box body has a receiving cavity for placing cat litter, the opening of which faces upward; the cleaning device includes a third rotary transmission component and a litter shovel, the litter shovel having a filter structure; the electronic control module includes a second driving element, which is connected to the third rotary transmission component to drive the third rotary transmission component to rotate around its own axis; the litter collection device is located in the rear area of ​​the box body; the cleaning device is installed on the litter box seat; the horizontal cross-section of the receiving cavity is circular; the box body is rotatably installed on the litter box seat; the electronic control module includes a first driving element, which is used to drive the litter box... The body rotates bidirectionally relative to the sand basin seat around the vertical central axis of the receiving cavity; the sand shovel includes a base plate and a retaining edge on the base plate, the retaining edge causing the sand shovel to form an inlet end only on one side of its base plate; the cleaning device includes a tilting rod, the two ends of the tilting rod in the length direction are the first end and the second end of the tilting rod, the first end of the tilting rod is fixedly connected to the third rotary transmission component, and the second end of the tilting rod is movably connected to the sand shovel. The sand shovel is set to rotate relative to the second end of the tilting rod around the axis of the sand shovel's rotating shaft within a set angle range. The axis of the sand shovel's rotating shaft and the axis of the third rotary transmission component are both set horizontally in the left and right direction. The third rotary transmission component can drive the sand shovel to switch between the disposal station, the sand shovel station, and the sand trowel station.

[0007] When the litter shovel is in the litter-shoveling position, the litter shovel is located in the right rear area of ​​the receiving cavity, with the bottom plate of the litter shovel facing down and the inlet end facing forward. At this time, the basin rotates counterclockwise, and the inlet end of the litter shovel will tilt down to shovel the litter under the action of the cat litter in the receiving cavity. When the litter shovel is in the smearing position, the litter shovel is located in the right rear area of ​​the receiving cavity, with the bottom plate of the litter shovel facing down and the inlet end facing forward. At this time, the basin rotates clockwise, and under the action of the cat litter in the receiving cavity, the inlet end of the litter shovel will tilt upward, and the rear end of the litter shovel will smooth the cat litter in the receiving cavity. When the litter shovel is switched from the litter shoveling position to the waste disposal position, the inlet end of the litter shovel can be flipped backward with the flipping rod, so that the litter clumps in the litter shovel can be poured into the waste collection device.

[0008] As an improvement to the above scheme: a rotating pair is formed between the basin body and the sand basin seat by a rotating bushing and a rotating top column. The rotating bushing and the rotating top column are both coaxially arranged relative to the vertical central axis of the receiving cavity. The rotating bushing is fixed on the bottom surface outside the basin body, and the rotating top column is fixed inside the sand basin seat. The bottom surface outside the basin body and the sand basin seat form rolling contact through bottom sliding rollers. Multiple sliding rollers are arranged at intervals along the circumference of the basin body. The outer peripheral sidewall of the basin body and the sand basin seat form rolling contact through support rollers. Multiple support rollers are arranged at intervals along the circumference of the basin body.

[0009] As an improvement to the above solution: the waste collection device includes a waste bin and a waste collection chamber. The waste collection chamber is slidably mounted on a sand basin seat with a horizontal pull-out structure. The waste collection chamber has a first state extending out of the sand basin seat and a second state retracted into the sand basin seat. The waste bin is located in the area above the waste collection chamber. The waste bin includes a waste bin shell, which is fixedly mounted on the sand basin seat. The waste bin shell has a rectangular hollow sleeve with its axis arranged vertically. The length direction corresponding to the horizontal section of the rectangular hollow sleeve is consistent with or perpendicular to the axis direction of the third rotary transmission component. The upper surface of the waste bin shell forms a garbage bag annular positioning groove in the outer periphery of the rectangular hollow sleeve. The garbage bag annular positioning groove is used to place stacked continuous garbage bags, so that the usable part of the stacked continuous garbage bags extends downward from the inner cavity of the rectangular hollow sleeve into the waste collection chamber. A slider is installed at the lower part of the inner cavity of the rectangular hollow sleeve. One side of the inner wall of the rectangular hollow sleeve is a garbage bag closing limit part. The slider and the garbage bag closing limit part are arranged opposite to each other. The electronic control module includes a third driving element, which is used to drive the slider to reciprocate within the rectangular hollow sleeve so that the slider approaches or moves away from the garbage bag closing limit part. When the slider approaches the garbage bag closing limit part, the slider and the garbage bag closing limit part clamp the upper part of the stacked continuous garbage bag, so that the opening of the stacked continuous garbage bag is in a closed state. When the slider moves away from the garbage bag closing limit part, the opening of the stacked continuous garbage bag is in an open state. The cat litter clumps in the sand shovel are poured into the collection device, which means that the cat litter clumps in the sand shovel are poured into the opening of the stacked continuous garbage bag.

[0010] As an improvement to the above scheme: the stool collection chamber moves in the left and right direction, and the stool collection chamber has a first state of extending out of the left side of the sand basin seat.

[0011] As an improvement to the above solution, a cutter for manually cutting stacked continuous garbage bags is installed inside the waste collection compartment.

[0012] As an improvement to the above solution, a sealing strip is fixedly installed on the side of the slider facing the garbage bag closing limit part.

[0013] As an improvement to the above solution: the trash can includes a guide sleeve one, a trash can slider judgment component, a trash can top cover, a left lower cover plate, a right lower cover plate, a guide sleeve two, a slide rod two, and a slide rod one; the trash can top cover, left lower cover plate, and right lower cover plate are detachably and fixedly assembled to form the outer shell of the trash can; a rectangular hollow sleeve is provided on the trash can top cover; the trash can top cover and the right lower cover plate together form the first transmission structure mounting cavity; the trash can top cover and the left lower cover plate together form the second transmission structure mounting cavity; the trash bag closing limiting part is located in the rectangular hollow sleeve. On the front side wall, the slider moves back and forth in the front-to-back direction. The right side of the slider is fixedly installed on guide sleeve one, and the left side of the slider is fixedly installed on guide sleeve two. Guide sleeve one is slidably installed on slide rod one, and guide sleeve two is slidably installed on slide rod two. Slide rod one and slide rod two are fixedly installed on the garbage bin cover. Guide sleeve one and slide rod one are both located in the first transmission structure mounting cavity, and guide sleeve two and slide rod two are both located in the second transmission structure mounting cavity. The garbage bin slider judgment component is used to detect the front travel limit position and the rear travel limit position of the slider.

[0014] As an improvement to the above scheme: the trash can includes an eighth rotary transmission component, a ninth rotary transmission component, a tenth rotary transmission component, an annular transmission component, a tensioning wheel, and a pressure plate, all located within the mounting cavity of the second transmission structure. The eighth, ninth, and tenth rotary transmission components are spaced apart in the horizontal direction, and their axes are all vertically oriented. The seventh rotary transmission component is coaxially fixed to the upper end of the eighth rotary transmission component, and its upper end extends beyond the top cover of the trash can. The upper end of the seventh rotary transmission component is used for transmission connection with the third drive element. The axial ends of the eighth and ninth rotary transmission components form a gear transmission structure. The annular transmission component is sleeved on the other axial end of the ninth rotary transmission component and the tenth rotary transmission component. The annular transmission component is a synchronous belt or chain, located in the left side region of the slider. The pressure plate is located inside the annular transmission component, and the left end face of the slider is fixed to the annular transmission component as a whole by the pressure plate. The tensioning wheel is located on the side of the annular transmission component away from the slider.

[0015] As an improvement to the above solution: the electrical control module includes an electrical control box, a fourth rotary transmission component, a fifth rotary transmission component, a sixth rotary transmission component, a first micro switch, a second micro switch, a third micro switch, a slotted photoelectric sensor, and a control board. The first, second, and third drive elements are all motors. The first, second, and third drive elements, the first, second, and third micro switches, the second, and third micro switches, and the slotted photoelectric sensor are all electrically connected to the control board. The first, second, and third drive elements, the first, second, and third micro switches, the slotted photoelectric sensor, and the control board are all fixedly installed inside the electrical control box. A sand basin cover is fixedly installed above the sand basin seat. The sand basin cover has a ball-through hole that matches the upper opening of the rectangular hollow sleeve, a flip rod clearance hole that matches the flip rod, and a basin fitting part that matches the receiving cavity opening of the basin body. The electrical control box is detachably fixed to the left rear side area of ​​the sand basin cover.

[0016] The axis of the fourth rotary transmission component is vertically arranged, and the fourth rotary transmission component is coaxially fixedly connected to the output end of the first drive element; the upper outer peripheral edge of the basin is provided with an outer ring gear, and the transmission teeth of the fourth rotary transmission component mesh with the outer ring gear of the basin to drive the basin to rotate relative to the sand basin seat.

[0017] The fifth rotary transmission component has its axis set vertically and is coaxially fixedly connected to the output end of the second drive element. The cleaning device includes a first rotary transmission component, a central connecting shaft, and a second rotary transmission component. The central connecting shaft extends horizontally in the left-right direction. The first rotary transmission component is coaxially fixed to the left end of the central connecting shaft, and the second rotary transmission component is coaxially fixed to the right end of the central connecting shaft. The left and right ends of the central connecting shaft are respectively rotatably set relative to the sand basin seat. A bevel gear transmission mechanism is formed between the fifth rotary transmission component and the first rotary transmission component, and a gear transmission mechanism is formed between the second rotary transmission component and the third rotary transmission component. The rotation of the fifth rotary transmission component drives the rotation of the third rotary transmission component. A rotation stroke detection block is fixedly provided on the outer periphery of the first rotary transmission component. When the rotation stroke detection block is located in the detection slot of the slotted photoelectric sensor, the sand shovel is in the disposal position. The rotation stroke corresponding to the sand shoveling position and the sand wiping position of the sand shovel is controlled by the encoder equipped with the second drive element.

[0018] The axis of the sixth rotary transmission component is vertically arranged, and the sixth rotary transmission component is coaxially fixedly connected to the output end of the third drive element. The lower end of the sixth rotary transmission component has an inner ring gear, and the inner ring gear of the sixth rotary transmission component meshes with the transmission teeth at the upper end of the seventh rotary transmission component.

[0019] The electrical control box can be separated from the sand basin cover by moving upward. When the electrical control box moves upward, the fourth rotary transmission component disengages from the outer ring gear of the basin body, the fifth rotary transmission component disengages from the first rotary transmission component, and the sixth rotary transmission component disengages from the seventh rotary transmission component.

[0020] The trash can slider determination component includes a slider detection rod that moves vertically up and down relative to the trash can lid and a slider detection rod resilient reset structure. The lower end of the slider detection rod extends into the mounting cavity of the second transmission structure and cooperates with the upper left surface of the slider to form an inclined top mechanism. When the slider causes the opening of the use part of the stacked continuous trash bag to be closed, a trash can slider determination component located on the front side can turn on the first micro switch. When the slider causes the opening of the use part of the stacked continuous trash bag to be open, a trash can slider determination component located on the rear side can turn on the second micro switch.

[0021] A stool collection chamber determination component is installed on the sand basin seat. The stool collection chamber determination component includes a stool collection chamber detection rod that moves vertically relative to the sand basin seat and a stool collection chamber detection rod resilient reset structure. The stool collection chamber moves in the left and right direction and has a first state where it extends out of the left side of the sand basin seat. An inclined top block is fixedly installed on the left inner wall of the stool collection chamber. The upper surface of the inclined top block and the lower end of the stool collection chamber detection rod cooperate to form an inclined top mechanism. When the stool collection chamber is in the second state where it is retracted into the sand basin seat, the stool collection chamber determination component can make the third micro switch turn on.

[0022] As an improvement to the above solution: the sand basin cover has an electrical control box positioning and mounting cavity that matches the lower part of the electrical control box; the side wall of the electrical control box positioning and mounting cavity has a vertical insertion positioning block; the outer wall of the electrical control box has a vertical insertion positioning groove that matches the vertical insertion positioning block; the bottom wall of the electrical control box positioning and mounting cavity has a detection protrusion; a fourth micro switch electrically connected to the control board is fixedly installed inside the electrical control box; when the electrical control box is installed in place relative to the sand basin cover, the detection protrusion enables the fourth micro switch to be in the on state.

[0023] As an improvement to the above solution: a pet detector electrically connected to the control board is fixedly installed on the front outer side of the electrical control box. The pet detector is used to detect whether a pet enters and leaves the containment cavity.

[0024] As an improvement to the above solution: a sand shovel cover is detachably fixed to the right rear side of the sand basin cover. The sand shovel cover is used to cover the sand shovel when it is in the disposal position.

[0025] As an improvement to the above solution: the cleaning device includes quick-release connector one and quick-release connector two. Quick-release connector one and sand shovel are fixed as an integral structure. Quick-release connector one and quick-release connector two are detachably and fixedly connected by a snap-locking limiting structure. The sand shovel shaft is located between quick-release connector two and the second end of the flipping rod.

[0026] As an improvement to the above solution: the cleaning device includes a support frame, a support frame cover, a fastening cover one, and a fastening cover two. The left end of the central connecting shaft is fixed to the sand basin seat by a screw through the fastening cover one, and the right end of the central connecting shaft is fixed to the sand basin seat by a screw through the support frame. The first end of the flipping rod has a flipping rod drive shaft coaxially arranged with respect to the third rotary transmission component. The flipping rod drive shaft passes through the third rotary transmission component. The right end of the flipping rod drive shaft is fixed to the sand basin seat by a screw through the fastening cover two, and the left end of the flipping rod drive shaft is fixed to the support frame by a screw through the support frame cover. A bearing is provided at the joint between the left end of the flipping rod drive shaft and the support frame cover.

[0027] The beneficial effects of this invention are: 1. Multifunctional Cleaning Device: The cleaning device completes multiple actions within one cycle, including separating litter from litter clumps, scooping up litter clumps, flipping and pouring them out, and smoothing the litter. The litter scoop has a three-sided baffle structure. When the litter scoop switches from the litter scooping position to the waste disposal position, it flips backward to pour the litter clumps into the waste collection device, making it easier to empty all the litter clumps into the waste collection device. When the litter scoop returns to the shaving position, the basin rotates clockwise. Under the action of the litter in the receiving cavity, the inlet end of the litter scoop tilts upward, and the rear end of the litter scoop smooths the litter in the receiving cavity. The smoothing action is performed by the relative movement of the basin and the litter scoop, which can better ensure the smoothing effect on the surface of the litter.

[0028] 2. The trash can can be fitted with stackable continuous trash bags, which facilitates the direct packaging of litter clumps entering the collection device. The trash bag opening can automatically open and close to prevent odors and leaks: the opening of the user section of the stackable continuous trash bag can be controlled by a slider. When emptying litter clumps, the user section of the stackable continuous trash bag automatically opens; when not emptying, the user section of the stackable continuous trash bag closes, effectively isolating odors, litter clumps, and litter dust, and better preventing odor from spreading.

[0029] 3. Pull-out design for easy maintenance: The waste collection compartment is located on the side of the litter box with a pull-out structure, allowing users to easily pull it out to clean the waste inside. The operation is simple and improves the user experience.

[0030] 4. The cutter inside the waste collection compartment can easily cut garbage bags. The specific usage method is as follows: manually drag the usable part of the stacked continuous garbage bag to the cutter for cutting, then manually tie a knot at the opening of the cut portion of the garbage bag, and then dispose of it as packaged garbage. The remaining unused stacked continuous garbage bag is manually tied at the bottom opening and then dragged to the bottom of the waste collection compartment as a new usable part to pour into cat litter balls. The operation is quite convenient for users.

[0031] 5. The electronic control module is highly integrated and can be installed and disassembled independently. The electronic control module itself is easy to maintain, and the litter box is easy to clean: The electronic control module is an independently installable and disassembled unit. It is located on the left rear side of the litter box cover through the electronic control box. When the electronic control module fails, it can be disassembled and repaired or replaced separately without disassembling other parts of the whole machine, which greatly reduces maintenance costs.

[0032] 6. Multiple microswitches and sensors are used for status detection, ensuring safety and reliability: The first and second microswitches detect the opening and closing status of the bag opening of the stacked continuous garbage bag, the third microswitch detects the opening and closing status of the waste collection compartment, the fourth microswitch detects the installation status of the electronic control module, and the slotted photoelectric sensor detects the rotation angle of the cleaning device. This achieves comprehensive status monitoring and safety protection during operation. When the waste collection compartment is not closed or the cleaning device is in an abnormal position, the control board can respond in time to avoid safety accidents.

[0033] 7. Sand shovel cover enhances safety and aesthetics: The sand shovel cover covers the sand shovel in the cleaning device, preventing users or pets from accidentally coming into contact with moving parts, while also improving the overall appearance consistency of the machine. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 for Figure 1 Top view of the embodiment shown; Figure 4 for Figure 3 A schematic diagram of the elevation structure corresponding to the AA direction; Figure 5 This is a partial structural diagram of the present invention. Figure 1 (The figure mainly shows the bottom structure of the basin and the transmission mechanism.) Figure 6 This is a partial structural diagram of the present invention. Figure 2 (The diagram mainly shows the internal structure of the sand basin base and the positional relationship between the cleaning device and the trash can.) Figure 7 This is a partial structural diagram of the present invention. Figure 3 (The diagram mainly shows the transmission mechanism of the cleaning device.) Figure 8 for Figure 7 Enlarged view of point B; Figure 9 This is a partial structural diagram of the present invention. Figure 4 (The image mainly shows the transmission mechanism of the cleaning device, without the support frame cover installed.) Figure 10 for Figure 9 Enlarged view of point C; Figure 11 This is a schematic diagram of the connection structure between the flipping rod and the quick-release connector 2 of the present invention; Figure 12 This is a schematic diagram of the overall structure of the trash can of the present invention; Figure 13 This is a schematic diagram of the slider transmission mechanism of the trash can of the present invention; Figure 14 This is a schematic diagram of the connection structure between the seventh and eighth rotary transmission components of the trash can of the present invention and the sixth rotary transmission component of the electronic control module. Figure 15 This is a schematic diagram of the overall structure of the electronic control module of the present invention; Figure 16 This is a schematic diagram showing the cooperation relationship between the internal components of the electronic control module of the present invention and components such as the "stool collection compartment determination component, garbage bin slider determination component and first rotary transmission component"; Figure 17 This is a schematic diagram of the structure of the sand basin cover of the present invention; Figure 18 This is a schematic diagram of the structure of the waste collection chamber of the present invention.

[0035] The components in the diagram are labeled as follows: 100-basin body, 101-receiving cavity, 102-bottom sliding roller, 103-rotating bushing, 200-sand basin seat, 201-support roller, 202-rotating top column, 203-observation hole, 204-poop collection chamber detection component, 300-sand basin cover, 301-poop passage hole, 302-flipping rod clearance hole, 303-vertical insertion positioning block, 304-detection protrusion, 400-cleaning device, 401-sand shovel, 402-bearing, 403-fastener, 404-first rotary transmission component, 405-central connecting shaft, 406 - Second rotary transmission component, 407- Third rotary transmission component, 408- Tilting rod, 409- Sand shovel shaft, 410- Support frame, 411- Support frame cover, 412- Fastening seat cover one, 413- Fastening seat cover two, 414- Rotation stroke detection block, 415- Quick release connector one, 416- Quick release connector two, 417- Limiting pin, 418- Elastic buckle, 500- Trash can, 501- Rectangular hollow sleeve, 502- Slider, 504- Sealing strip, 505- Slide rod one, 506- Guide sleeve one, 507- Slide rod fixing cover plate one, 508- Seventh Rotary transmission component, 509-Eighth rotary transmission component, 510-Slide rod II, 511-Guide sleeve II, 512-Left lower cover plate, 513-Right lower cover plate, 514-Garbage bin top cover, 515-Garbage bin slider judgment component, 516-Slide rod fixing cover plate II, 600-Sewage collection compartment, 601-Cutter, 602-Angled top block, 700-Sand shovel cover, 800-Electrical control module, 801-Fourth rotary transmission component, 802-Fifth rotary transmission component, 803-Sixth rotary transmission component, 804-First driving element, 805-Second driving element, 806- Third drive element, 807-First micro switch, 808-Second micro switch, 809-Third micro switch, 810-Fourth micro switch, 811-Slot-type photoelectric sensor, 812-Pet detection sensor, 813-Control board, 814-Power socket, 815-Push-button switch, 816-Sensor mounting bracket, 817-Second drive element mounting bracket, 900-Ninth rotary transmission component, 901-Ring transmission component, 902-Tensioning wheel, 903-Pressure plate, 904-Tenth rotary transmission component, 905-Main drive shaft, 906-Driven drive shaft. Detailed Implementation

[0036] To facilitate understanding of the present invention, the invention will be further described below with reference to the accompanying drawings.

[0037] like Figures 1 to 18As shown, the present invention includes a basin body 100, a litter box seat 200, a cleaning device 400, an electronic control module 800, and a litter collection device. The basin body 100 has a receiving cavity 101 for holding cat litter, with the opening of the receiving cavity 101 facing upwards. The cleaning device 400 includes a third rotary transmission component 407 and a litter shovel 401, the litter shovel 401 having a filter structure. The electronic control module 800 includes a second driving element 805, which is connected to the third rotary transmission component 407 to drive the third rotary transmission component 407 to rotate around its own axis. The litter collection device is located in the rear area of ​​the basin body 100. The cleaning device 400 is mounted on the litter box seat 200. The horizontal cross-section of the receiving cavity 101 is circular. The basin body 100 is rotatably mounted on the litter box seat 200. The electronic control module 800 includes a first driving element 804, which is used to drive the basin body 100 relative to the litter box seat 200. The sand shovel 401 rotates bidirectionally around the vertical central axis of the receiving cavity 101 (corresponding to the counterclockwise rotation and counterclockwise rotation described later); the sand shovel 401 includes a base plate and a retaining edge located on the base plate, the retaining edge causing the sand shovel 401 to form an inlet end only on one side of its base plate; the cleaning device 400 includes a flipping rod 408, the two ends of the flipping rod 408 in the length direction are respectively the first end and the second end of the flipping rod 408, the first end of the flipping rod 408 is fixedly connected to the third rotary transmission member 407, and the second end of the flipping rod 408 is movably connected to the sand shovel 401, the sand shovel 401 is rotated relative to the second end of the flipping rod 408 around the axis of the sand shovel rotating shaft 409 within a set angle range, the axis of the sand shovel rotating shaft 409 and the axis of the third rotary transmission member 407 are both horizontally arranged in the left and right direction, and the sand shovel 401 can be switched between the disposal station, the sand shovel station and the sand trowel station through the third rotary transmission member 407.

[0038] When the sand shovel 401 is in the shoveling position, it is located in the right rear area of ​​the receiving cavity 101, with its bottom plate facing down and its inlet end facing forward. At this time, the basin 100 rotates counterclockwise, and the inlet end of the sand shovel 401 tilts downwards to shovel the litter under the influence of the litter within the receiving cavity 101. When the sand shovel 401 is in the smearing position, it is located in the right rear area of ​​the receiving cavity 101, with its bottom plate facing down and its inlet end facing forward. With the inlet end facing forward, the basin 100 rotates clockwise. Under the action of the cat litter in the receiving cavity 101, the inlet end of the litter shovel 401 will tilt upward, and the rear end of the litter shovel 401 will smooth the cat litter in the receiving cavity 101. When the litter shovel 401 switches from the litter shoveling position to the waste disposal position, the inlet end of the litter shovel 401 can be flipped backward with the flipping rod 408, so that the cat litter clump in the litter shovel 401 is poured into the waste collection device.

[0039] The litter box base 200 is placed on the ground, serving as the base of the overall structure and providing basic support for the litter box 100, cleaning device 400, and waste collection device. The filter structure of the litter shovel 401 is rationally designed to effectively separate litter clumps from litter before it leaves the receiving cavity 101 when switching from the litter shoveling position to the waste disposal position. Filter holes are typically provided on the bottom plate and sides of the litter shovel 401. The litter shovel 401 is rotatable within a set angle range relative to the second end of the flipping rod 408 around the axis of the litter shovel shaft 409. Specifically, a rotation limit structure is provided at the rotation connection point. (See reference...) Figure 6 and Figure 11 In the preferred embodiment shown, the sand shovel 401 is fixed relative to the quick-release connector 416, and the quick-release connector 416 and the second end of the flipping rod 408 can only rotate within a range of about 90°.

[0040] The litter shovel 401 switches between the waste disposal station, the litter shoveling station, and the litter wiping station. In practice, the waste disposal station is the initial station. When it is necessary to clean up litter clumps, it first switches to the litter shoveling station. After shoveling, it switches back to the waste disposal station. After the litter clumps are poured into the collection device, it switches back to the wiping station to smooth the litter in the receiving cavity 101. After smoothing, it switches back to the waste disposal station to prepare for the next cleaning. This is one complete cleaning cycle. The second drive element 805 also needs to have bidirectional rotation functionality. The first drive element 804 and the second drive element 805 can adopt various conventional rotating devices, preferably motors. Bidirectional rotation of the motor output shaft is a conventional technology in this field.

[0041] The first driving element 804 only needs to be able to drive the basin 100 to rotate bidirectionally relative to the sand basin seat 200 around the vertical central axis of the receiving cavity 101. Its corresponding transmission mechanism can be implemented in various ways. To make the structure simple and reliable, in some preferred embodiments, the basin 100 and the sand basin seat 200 form a rotating pair through a rotating bushing 103 and a rotating top column 202. Both the rotating bushing 103 and the rotating top column 202 are coaxially arranged relative to the vertical central axis of the receiving cavity 101. The rotating bushing 103 is fixedly mounted on the bottom surface outside the basin 100, and the rotating top column 202 is fixed inside the sand basin seat 200. The bottom surface outside the basin 100 and the sand basin seat 200 form rolling contact through bottom sliding rollers 102, with multiple sliding rollers 102 arranged at intervals along the circumference of the basin 100. The outer peripheral sidewall of the basin 100 and the sand basin seat 200 form rolling contact through support rollers 201, with multiple support rollers 201 arranged at intervals along the circumference of the basin 100. The bottom sliding roller 102 is preferably disposed on the bottom surface outside the basin 100, and the support roller 201 is preferably disposed above the inner cavity of the sand basin seat 200. The bottom sliding roller 102 and the bottom sliding roller 102 together provide support and guidance for the rotation of the basin 100, reducing the frictional resistance between them.

[0042] To facilitate the collection and packaging of cat litter clumps and to enable automatic opening and closing of the litter bag opening, in some preferred embodiments, the waste collection device includes a waste bin 500 and a waste collection compartment 600. The waste collection compartment 600 is slidably mounted on the litter box seat 200 with a horizontal pull-out structure. The waste collection compartment 600 has a first state extending out of the litter box seat 200 and a second state retracted into the litter box seat 200. The waste bin 500 is located above the waste collection compartment 600 and includes a waste bin shell, which is fixed. Installed on the sand basin base 200, the outer shell of the garbage bin has a rectangular hollow sleeve 501 with its axis vertically oriented. The length direction corresponding to the horizontal section of the rectangular hollow sleeve 501 is consistent with or perpendicular to the axis direction of the third rotary transmission component 407 (i.e., corresponding to either the left-right or front-back direction). The upper surface of the garbage bin outer shell forms a garbage bag annular positioning groove in the outer periphery of the rectangular hollow sleeve 501. The garbage bag annular positioning groove is used to place stacked continuous garbage bags and to ensure that the stacked continuous garbage bags are positioned correctly. The part extends downward from the inner cavity of the rectangular hollow sleeve 501 into the collection chamber 600. A slider 502 is installed in the lower part of the inner cavity of the rectangular hollow sleeve 501. One side of the inner wall of the rectangular hollow sleeve 501 is a garbage bag closing limit part. The slider 502 and the garbage bag closing limit part are arranged opposite to each other. The electronic control module 800 includes a third driving element 806, which is used to drive the slider 502 to reciprocate within the rectangular hollow sleeve 501, so that the slider 502 moves closer to or away from the garbage bag closing limit part. When the slider 502 approaches the garbage bag closing limit part, the slider 502 and the garbage bag closing limit part are used to clamp the upper part of the use part of the stacked continuous garbage bag so that the opening of the use part of the stacked continuous garbage bag is in a closed state. When the slider 502 moves away from the garbage bag closing limit part, the opening of the use part of the stacked continuous garbage bag is in an open state. The cat litter clump in the sand shovel 401 is poured into the collection device, which means that the cat litter clump in the sand shovel 401 is poured into the opening of the use part of the stacked continuous garbage bag.

[0043] The stacked continuous garbage bag is a special garbage bag for smart automatic garbage bins. It is a single tubular film with no pre-made dividing lines between individual bags. It has a Z-shaped reciprocating folding and stacking structure. When in use, the bottom of the garbage bag is manually knotted to form the bottom of the garbage bag. The bottom of the garbage bag in use corresponds to the bottom of the inner cavity of the waste collection compartment 600. When it is necessary to pack the cat litter clumps in the garbage bag, pull out the waste collection compartment 600, manually cut the opening area of ​​the stacked continuous garbage bag, and then manually knot the opening of the cut-off part of the garbage bag. This is then used as the packed garbage. The remaining unused stacked continuous garbage bag is manually knotted at the bottom opening to form the bottom of a new garbage bag. It is then dragged to the bottom of the waste collection compartment 600 to serve as a new use part for emptying cat litter clumps. The operation is quite convenient for users.

[0044] To make the overall structure more compact, in some preferred embodiments, the waste collection chamber 600 moves in the left-right direction and has a first state where it extends beyond the left side of the litter box seat 200. The waste collection chamber 600 is slidably disposed on the litter box seat 200 in a horizontal pull-out structure, which can be referred to in the context of a conventional push-pull drawer structure.

[0045] In some alternative embodiments, when it is necessary to pack up the litter clumps inside the garbage bag, the stacked continuous garbage bag can be cut using a separate blade or by scissors. For ease of use, in some preferred embodiments, the waste collection compartment 600 is provided with a cutter 601 for manually cutting the stacked continuous garbage bag.

[0046] In order to better close the opening of the use part of the stacked continuous garbage bag, in some preferred embodiments, a sealing strip 504 is fixedly provided on the side of the slider 502 facing the garbage bag closing limit part. The sealing strip 504 can elastically squeeze the opening of the use part of the stacked continuous garbage bag.

[0047] The reciprocating movement of slider 502 can be achieved using various conventional linear power drive structures. To ensure a simple and reliable structure, in some preferred embodiments, the trash can 500 includes a guide sleeve 506, a trash can slider determining component 515, a trash can top cover 514, a left lower cover plate 512, a right lower cover plate 513, a guide sleeve 511, a slider 510, and a slider 505. The trash can top cover 514, the left lower cover plate 512, and the right lower cover plate 513 are detachably and fixedly assembled into a trash can shell (generally fixed with screws). A rectangular hollow sleeve 501 is disposed on the trash can top cover 514. The trash can top cover 514 and the right lower cover plate 513 together form a first transmission structure mounting cavity, and the trash can top cover 514 and the left lower cover plate 512 together form a second transmission structure mounting cavity. The trash bag closing limiting part is located on the front side wall of the rectangular hollow sleeve 501. The slider 502 reciprocates along the front-back direction. The right side of the slider 502 is fixedly installed on the guide sleeve 506. 502 is fixedly installed on the left side of guide sleeve 2 510, guide sleeve 1 506 is slidably installed on slide rod 1 505, guide sleeve 2 511 is slidably installed on slide rod 2 510, slide rod 1 505 and slide rod 2 510 are fixedly installed on the garbage bin cover 514, guide sleeve 1 506 and slide rod 1 505 are both located in the first transmission structure mounting cavity, guide sleeve 2 511 and slide rod 2 510 are both located in the second transmission structure mounting cavity; the garbage bin slider judgment component 515 is used to detect the front travel limit position and the rear travel limit position of slider 502 respectively. When slider 502 is located at the front travel limit position, slider 502 and garbage bag closing limit part are used to clamp the upper part of the use part of the stacked continuous garbage bag so that the bag opening of the use part of the stacked continuous garbage bag is in a closed state. When slider 502 is located at the rear travel limit position, the bag opening of the use part of the stacked continuous garbage bag is in an open state. The main transmission structure of slider 502 is located in the first transmission structure mounting cavity and the second transmission structure mounting cavity, and is protected by the outer shell of the garbage bin. The axial ends of slider 505 can be fixed by slider fixing cover plate 507 with screws, and the axial ends of slider 510 can be fixed by slider fixing cover plate 516 with screws. Guide sleeve 506 and guide sleeve 511 can both use low-friction sliding guide elements such as oilless bushings or linear bearings.

[0048] The garbage bin 500 includes an eighth rotary transmission component 509, a ninth rotary transmission component 900, a tenth rotary transmission component 904, an annular transmission component 901, a tensioning wheel 902, and a pressure plate 903, all disposed within the mounting cavity of the second transmission structure. The eighth, ninth, and tenth rotary transmission components 509, 900, and 904 are spaced apart horizontally, and their axes are all vertically oriented. A seventh rotary transmission component 508 is coaxially fixed to the upper end of the eighth rotary transmission component 509, and its upper end extends beyond the garbage bin cover 514. The upper end of the seventh rotary transmission component 508 is used to connect with the third driving element 80. 6. Transmission connection: The eighth rotary transmission component 509 and the ninth rotary transmission component 900 form a gear transmission structure at one axial end. The annular transmission component 901 is sleeved on the other axial end of the ninth rotary transmission component 900 and the tenth rotary transmission component 904. The annular transmission component 901 is a synchronous belt or chain. The annular transmission component 901 is located in the left side region of the slider 502. The pressure plate 903 is located inside the annular transmission component 901. The left end face of the slider 502 is fixed to the annular transmission component 901 as a whole by the pressure plate 903. The tensioning wheel 902 is located on the side of the annular transmission component 901 away from the slider 502 (i.e., the slack side). The third drive element 806 also needs to have bidirectional rotation function. The third drive element 806 can adopt various conventional rotating devices, preferably a motor. Bidirectional rotation of the motor output shaft is a conventional technology in this field. The transmission direction of the annular transmission component 901 is consistent with the movement direction of the slider 502. That is, the ninth rotary transmission component 900 and the tenth rotary transmission component 904 are arranged in a staggered pattern. The ninth rotary transmission component 900 can generally be rotatably mounted using the main transmission shaft 905, and the tenth rotary transmission component 904 can generally be rotatably mounted using the driven transmission shaft 906. The seventh rotary transmission component 508 is coaxially fixed to the upper end of the eighth rotary transmission component 509, meaning that the two can rotate synchronously. A preferred connection structure between the seventh rotary transmission component 508, the eighth rotary transmission component 509, and the sixth rotary transmission component 803 of the electronic control module 800 can be found in [reference needed]. Figure 14 The seventh rotary transmission component 508 and the eighth rotary transmission component 509 can be connected by inserting into each other to form a key connection. The lower end of the sixth rotary transmission component 803 has an inner ring gear, and the inner ring gear of the sixth rotary transmission component 803 meshes with the transmission teeth at the upper end of the seventh rotary transmission component 508.

[0049] In some preferred embodiments, for ease of inspection and maintenance, the electrical control module 800 can be disassembled as a whole. The electrical control module 800 includes an electrical control box, a fourth rotary transmission component 801, a fifth rotary transmission component 802, a sixth rotary transmission component 803, a first micro switch 807, a second micro switch 808, a third micro switch 809, a slotted photoelectric sensor 811, and a control board 813. The first drive element 804, the second drive element 805, and the third drive element 806 are all motors. The first drive element 804, the second drive element 805, the third drive element 806, the first micro switch 807, the second micro switch 808, the third micro switch 809, and the slotted photoelectric sensor 811... All components are electrically connected to the control board 813; the first drive element 804, the second drive element 805, the third drive element 806, the first micro switch 807, the second micro switch 808, the third micro switch 809, the slotted photoelectric sensor 811, and the control board 813 are all fixedly installed inside the electrical control box; a sand basin cover 300 is fixedly installed above the sand basin seat 200, the sand basin cover 300 has a ball-passing hole 301 adapted to the upper opening of the rectangular hollow sleeve 501, a flip rod clearance hole 302 adapted to the flip rod 408, and a basin mating part adapted to the opening of the receiving cavity 101 of the basin body 100; the electrical control box is detachably fixed to the left rear side area of ​​the sand basin cover 300. After the electrical control box is removed, the corresponding internal components are removed simultaneously. The electrical control module 800 removed from the sand basin cover 300 can be found in [reference missing]. Figure 15 The fourth rotary transmission component 801, the fifth rotary transmission component 802, and the sixth rotary transmission component 803 are all integrated into the electronic control module 800. These components serve as the points for disassembly and separation between the electronic control module 800 and the overall machine transmission system. The sand basin cover 300 is used to shield and protect the internal structure, improve the overall appearance consistency of the machine, and also serves as the mounting base for the electronic control module 800.

[0050] The axis of the fourth rotary transmission component 801 is vertically arranged, and the fourth rotary transmission component 801 is coaxially fixedly connected to the output end of the first drive element 804; the upper outer peripheral edge of the basin 100 is provided with an outer ring gear, and the transmission teeth of the fourth rotary transmission component 801 mesh with the outer ring gear of the basin 100 to drive the basin 100 to rotate relative to the sand basin seat 200.

[0051] The fifth rotary transmission component 802 is vertically oriented and coaxially fixedly connected to the output end of the second drive element 805. The cleaning device 400 includes a first rotary transmission component 404, a central connecting shaft 405, and a second rotary transmission component 406. The central connecting shaft 405 extends horizontally in the left-right direction. The first rotary transmission component 404 is coaxially fixed to the left end of the central connecting shaft 405, and the second rotary transmission component 406 is coaxially fixed to the right end of the central connecting shaft 405. The left and right ends of the central connecting shaft 405 are rotatably oriented relative to the sand basin seat 200. The fifth rotary transmission component 802 is vertically oriented and coaxially fixedly connected to the output end of the second drive element 805. A bevel gear transmission mechanism is formed between the fifth rotary transmission component 802 and the first rotary transmission component 404, and a gear transmission mechanism is formed between the second rotary transmission component 406 and the third rotary transmission component 407. The rotation of the fifth rotary transmission component 802 drives the third rotary transmission component 407 to rotate. A rotation stroke detection block 414 is fixedly provided on the outer peripheral edge of the first rotary transmission component 404. When the rotation stroke detection block 414 is located in the detection groove of the slotted photoelectric sensor 811, the sand shovel 401 is in the waste disposal position. The rotation stroke corresponding to the sand shoveling position and the sanding position of the sand shovel 401 is controlled by the encoder provided with the second drive element 805.

[0052] The axis of the sixth rotary transmission component 803 is vertically arranged. The sixth rotary transmission component 803 is coaxially fixedly connected to the output end of the third drive element 806. The lower end of the sixth rotary transmission component 803 has an inner ring gear, which meshes with the transmission teeth at the upper end of the seventh rotary transmission component 508.

[0053] The electrical control box can be separated from the sand basin cover 300 by moving upward. When the electrical control box moves upward, the fourth rotary transmission component 801 disengages from the outer ring gear of the basin body 100, the fifth rotary transmission component 802 disengages from the first rotary transmission component 404, and the sixth rotary transmission component 803 disengages from the seventh rotary transmission component 508.

[0054] The trash can slider detection component 515 includes a slider detection rod that moves vertically relative to the trash can cover 514 and a slider detection rod resilient reset structure. The lower end of the slider detection rod extends into the mounting cavity of the second transmission structure and cooperates with the upper left surface of the slider 502 to form a slanted top mechanism. When the slider 502 closes the opening of the use part of the stacked continuous trash bag, the front trash can slider detection component 515 can activate the first micro switch 807. When the slider 502 opens the opening of the use part of the stacked continuous trash bag, the rear trash can slider detection component 515 can activate the second micro switch 808. The slanted top mechanism means that both the lower end of the slider detection rod and the upper left surface of the slider 502 have a transmission slant, which can convert the horizontal movement of the slider 502 into the vertical movement of the slider detection rod. Taking the forward movement of slider 502 as an example, when slider 502 approaches the front travel limit position, slider 502 will gradually drive the slider detection rod of the front garbage bin slider judgment component 515 to move upward until the upper end of the slider detection rod abuts against the first micro switch 807, making the first micro switch 807 in the on state. At this time, the control board 813 can determine that slider 502 is at the front travel limit position, and the bag opening of the stacked continuous garbage bag is in the closed state. When slider 502 moves backward, under the action of the slider detection rod downward elastic reset structure, the slider detection rod of the front garbage bin slider judgment component 515 is reset downward, and the first micro switch 807 returns to the off state. The slider detection rod downward elastic reset structure can generally be implemented by setting a spring between the slider detection rod and the garbage bin cover 514.

[0055] To facilitate automatic determination of whether the waste collection bin 600 is installed in place and perform linkage control with the whole machine, in some preferred embodiments, a waste collection bin determination assembly 204 is mounted on the litter box base 200, and the waste collection bin determination assembly 204 includes a waste collection bin detection rod that moves up and down vertically relative to the litter box base 200 and an elastic reset structure for the downward movement of the waste collection bin detection rod; the waste collection bin 600 moves along the left-right direction, and has a first state in which it extends out of the left side of the litter box base 200. A slanted ejecting block 602 is fixedly disposed on the left inner wall of the waste collection bin 600, and the upper surface of the slanted ejecting block 602 cooperates with the lower end of the waste collection bin detection rod to form a slanted ejecting mechanism; when the waste collection bin 600 is in a second state of being retracted into the litter box base 200, the waste collection bin determination assembly 204 can make the third microswitch 808 in an on state. For the cooperation mode and working principle between the waste collection bin determination assembly 204 and the third microswitch 808, reference may be made to the trash bin slider determination assembly 515 and the first microswitch 807. When the waste collection bin 600 is pushed in, the slanted ejecting block 602 pushes the waste collection bin detection rod of the waste collection bin determination assembly 204 to move into contact with the third microswitch 807, the control board 813 determines that the waste collection bin 600 is installed in place, the slider 502 can work normally, and the bag opening of the garbage bag can be opened and closed normally. When the waste collection bin 600 is pulled out, the slanted ejecting block 602 is separated from the waste collection bin determination assembly 204, the waste collection bin detection rod is separated from the third microswitch 809, the third microswitch 809 triggers a signal, and the control board 813 determines that the waste collection bin 600 is in an open state and suspends the operation of the whole machine.

[0056] To facilitate the installation of the electronic control module 800, and at the same time facilitate automatic determination of whether the electronic control module 800 is installed in place and perform linkage control with the whole machine, in some preferred embodiments, the litter box cover 300 is provided with an electric control box positioning and installation cavity adapted to the lower part of the electric control box, the side wall of the electric control box positioning and installation cavity is provided with a vertical insertion positioning block 303, and the outer wall of the electric control box is provided with a vertical insertion positioning slot adapted to the vertical insertion positioning block 303; the bottom wall of the electric control box positioning and installation cavity is provided with a detection protrusion 304; a fourth microswitch 810 electrically connected to the control board 813 is fixedly disposed inside the electric control box; when the electric control box is installed in place relative to the litter box cover 300, the detection protrusion 304 can make the fourth microswitch 810 in an on state. The fourth microswitch 810 is used to detect whether the electronic control module 800 is correctly installed on the upper left of the litter box cover 300. When the electronic control module 800 is not installed in place, the whole machine does not work. The first microswitch 807, the second microswitch 808, the third microswitch 809, the fourth microswitch 810 and the trough-type photoelectric sensor 811 can be fixedly mounted together on the sensor mounting bracket 816, and the second driving element 805 can be fixedly mounted on the second driving element mounting bracket 817. Generally, a power socket 814 can be further disposed on the rear side of the electric control box, and a key switch 815 is disposed on the front side of the electric control box.

[0057] To facilitate automatic control of the entire machine, in some preferred embodiments, a pet detector 812, electrically connected to the control board 813, is fixedly installed on the front outer side of the electrical control box. The pet detector 812 is used to detect whether a pet enters or leaves the receiving cavity 101. The pet detector 812 can be a camera, infrared sensor, radar sensor, etc. When the pet detection sensor 812 detects that a pet has entered the receiving cavity 101, the system enters a standby state; when the pet detection sensor 812 detects that a pet has left the receiving cavity 101, the system automatically starts the cleaning cycle after a preset delay time.

[0058] In some preferred embodiments, a sand shovel cover 700 is detachably fixed to the right rear side of the sand basin cover 300. The sand shovel cover 700 is used to cover the sand shovel 401 when it is in the waste disposal position. The sand shovel cover 700 can prevent users or pets from accidentally contacting the sand shovel 401 and other moving parts during equipment operation, reducing the risk of pinching injuries, while also covering the internal structure and improving the overall appearance consistency of the machine.

[0059] To facilitate quick assembly and disassembly of the sand shovel 401, in some preferred embodiments, the cleaning device 400 includes a quick-release connector 415 and a quick-release connector 416. The quick-release connector 415 and the sand shovel 401 are fixed as a single unit, and the quick-release connector 415 and the quick-release connector 416 are detachably and fixedly connected by a snap-fit ​​limiting structure. The sand shovel pivot 409 is located between the quick-release connector 416 and the second end of the flipping rod 408. See details in the attached document. Figure 6 and Figure 11 The second quick-release connector 416 integrates a limiting pin 417 and a spring clip 418. When the first quick-release connector 415 and the second quick-release connector 416 are connected, the spring clip 418 and the first quick-release connector 415 form a snap-fit ​​connection as the limiting pin 417 is inserted into the first quick-release connector 415. When disassembling the sand shovel 401, simply press the snap-fit ​​part of the spring clip 418 through the external snap-fit ​​hole of the first quick-release connector 415 to release the snap-fit ​​part of the spring clip 418 from the constraint of the first quick-release connector 415, thereby separating the first quick-release connector 415 and the second quick-release connector 416. The sand shovel 401 can be maintained and cleaned separately.

[0060] To ensure a simple, reliable, and easy-to-assemble structure, in some preferred embodiments, the cleaning device 400 includes a support frame 410, a support frame cover 411, a first fastening cover 412, and a second fastening cover 413. The left end of the central connecting shaft 405 is fixed to the sand basin seat 200 by screws via the first fastening cover 412, and the right end of the central connecting shaft 405 is fixed to the sand basin seat 200 by screws via the support frame 410. The first end of the flipping rod 408 has a flipping rod drive shaft coaxially arranged with respect to the third rotary transmission member 407. The flipping rod drive shaft passes through the third rotary transmission member 407. The right end of the flipping rod drive shaft is fixed to the sand basin seat 200 by screws via the second fastening cover 413, and the left end of the flipping rod drive shaft is fixed to the support frame 410 by screws via the support frame cover 411. A bearing 402 is provided at the mating point between the left end of the flipping rod drive shaft and the support frame cover 411. It is understood that, in some preferred embodiments, bearings 402 may also be added to both ends of the central connecting shaft 405; bearings 402 may also be provided at the mating point between the right end of the flipping rod drive shaft and the fastening seat cover 413. The first rotary drive component 404 can generally be sleeved on the stepped positioning surface at the left end of the central connecting shaft 405, and then locked and fixed by the fastener 403 at the left end of the central connecting shaft 405. The second rotary drive component 406 can generally be sleeved on the stepped positioning surface at the right end of the central connecting shaft 405, and then locked and fixed by the fastener 403 at the right end of the central connecting shaft 405, and the fastener 403 can generally be an end screw. The end faces of the first rotary drive component 404 and the second rotary drive component 406 can also cooperate with the sand basin seat 200 to achieve axial installation and positioning of the central connecting shaft 405. The sand basin base 200 may also be provided with an observation hole 203 to facilitate observation of the installation position and meshing state of the second rotary transmission component 406 and the third rotary transmission component 407. When the second rotary transmission component 406 and the third rotary transmission component 407 are assembled together, they need to be aligned with the meshing markings. The rotary transmission components involved in this invention may adopt the structural form of gears, incomplete gears, etc.

[0061] In a preferred embodiment of the present invention, the following workflow can generally be followed: (1) After the pet defecates, it leaves the containment chamber 101. The pet detection sensor 812 detects that the pet has left. After a preset delay, the system starts the cleaning cycle. (2) The first driving element 804 drives the basin 100 to rotate, so that the cat litter and cat litter balls rotate in the receiving cavity 101; (3) The second driving element 805 drives the cleaning device 400 to rotate, and the sand shovel 401 reaches the sand shovel position, so that the sand shovel 401 enters the receiving cavity 101 and comes into contact with the cat litter and cat litter clumps. The sand shovel 401 separates the cat litter from the cat litter clumps. (4) When the litter shovel 401 flips away from the receiving cavity 101, it scoops up the litter ball and carries it to the top of the litter ball passage 301; at the same time, the third driving element 806 drives the slider 502 in the trash can 500 to move horizontally, and the opening of the trash bag is opened; the litter ball is poured into the trash bag in the collection chamber 600 through the litter ball passage 301 under the action of natural gravity. (5) The slider 502 moves horizontally in the opposite direction, the bag mouth of the garbage bag closes, the cleaning device 400 returns to its original position, the sand shovel 401 reaches the sanding station, and the sand shovel 401 smooths the cat litter in the receiving cavity 101. (6) The slotted photoelectric sensor 811 confirms that the cleaning device 400 has returned to its initial position, and the cleaning cycle is over; (7) When the cat litter clumps in the collection chamber 600 accumulate to a certain amount, the user pulls out the collection chamber 600, operates the cutter 601 to cut the garbage bag, and manually seals it. After removing the sealed garbage bag containing the cat litter clumps, the user manually sets a new garbage bag, pushes the collection chamber 600 back, and after the third micro switch 809 confirms that the collection chamber 600 is in place, the system returns to standby mode.

Claims

1. An automatic litter box, comprising a litter box body (100), a litter box base (200), a cleaning device (400), an electronic control module (800), and a litter collection device; the litter box body (100) has a receiving cavity (101) for holding cat litter, the opening of the receiving cavity (101) facing upward; the cleaning device (400) includes a third rotary transmission component (407) and a litter scoop (401), the litter scoop (401) having a filter structure; the electronic control module (800) includes a second driving element (805), the second driving element (805) being connected to the third rotary transmission component (407) to drive the third rotary transmission component (407) to rotate around its own axis; the litter collection device is disposed in the rear area of ​​the litter box body (100), characterized in that: The cleaning device (400) is installed on the sand basin seat (200), the horizontal cross section of the receiving cavity (101) is circular, the basin body (100) is rotatably installed on the sand basin seat (200), and the electronic control module (800) includes a first driving element (804), which is used to drive the basin body (100) to rotate bidirectionally relative to the sand basin seat (200) around the vertical central axis of the receiving cavity (101); The sand shovel (401) includes a base plate and a retaining edge on the base plate. The retaining edge makes the sand shovel (401) form an inlet end only on one side of its base plate. The cleaning device (400) includes a flipping rod (408). The two ends of the flipping rod (408) in the length direction are the first end and the second end of the flipping rod (408), respectively. The first end of the flipping rod (408) is fixedly connected to the third rotary transmission component (407). The second end of the flipping rod (408) is movably connected to the sand shovel (401). The sand shovel (401) is rotated relative to the second end of the flipping rod (408) around the axis of the sand shovel shaft (409) within a set angle range. The axis of the sand shovel shaft (409) and the axis of the third rotary transmission component (407) are both horizontally arranged in the left and right directions. The third rotary transmission component (407) can drive the sand shovel (401) to switch between the waste disposal station, the sand shovel station and the sand trowel station. When the sand shovel (401) is in the sand shoveling position, the sand shovel (401) is located in the right rear area of ​​the receiving cavity (101), and the bottom plate of the sand shovel (401) is facing down and the inlet end is facing forward. At this time, the basin (100) rotates counterclockwise. Under the action of the cat litter in the receiving cavity (101), the inlet end of the sand shovel (401) will tilt down to shovel the litter. When the litter shovel (401) is in the smearing position, the litter shovel (401) is located in the right rear area of ​​the receiving cavity (101), and the bottom plate of the litter shovel (401) is facing down and the inlet end is facing forward. At this time, the basin (100) rotates clockwise. Under the action of the cat litter in the receiving cavity (101), the inlet end of the litter shovel (401) will be tilted upward, and the rear end of the litter shovel (401) will smooth the cat litter in the receiving cavity (101). When the litter shovel (401) is switched from the litter shoveling position to the waste disposal position, the inlet end of the litter shovel (401) can be flipped backward with the flipping rod (408) so that the cat litter clump in the litter shovel (401) is poured into the waste collection device.

2. The automatic litter box as described in claim 1, characterized in that: A rotating pair is formed between the basin (100) and the sand basin seat (200) by a rotating bushing (103) and a rotating top column (202). The rotating bushing (103) and the rotating top column (202) are both coaxially arranged relative to the vertical central axis of the receiving cavity (101). The rotating bushing (103) is fixed on the bottom surface outside the basin (100), and the rotating top column (202) is fixed inside the sand basin seat (200). The bottom surface outside the basin (100) and the sand basin seat (200) form a rolling contact through the bottom sliding roller (102). Multiple sliding rollers (102) are arranged at intervals along the circumference of the basin (100). The outer peripheral sidewall of the basin (100) and the sand basin seat (200) form a rolling contact through the support roller (201). Multiple support rollers (201) are arranged at intervals along the circumference of the basin (100).

3. The automatic litter box as described in claim 1, characterized in that: The waste collection device includes a waste bin (500) and a waste collection chamber (600). The waste collection chamber (600) is slidably mounted on a litter box seat (200) with a horizontal pull-out structure. The waste collection chamber (600) has a first state extending out of the litter box seat (200) and a second state retracted into the litter box seat (200). The waste bin (500) is located in the area above the waste collection chamber (600). The waste bin (500) includes a waste bin shell, which is fixedly mounted on the litter box seat (200). The waste bin shell has a vertical axis. A rectangular hollow sleeve (501) is provided, the length direction corresponding to the horizontal section of the rectangular hollow sleeve (501) is consistent with or perpendicular to the axis direction of the third rotary transmission component (407). The upper surface of the garbage bin shell forms a garbage bag annular positioning groove in the outer periphery of the rectangular hollow sleeve (501). The garbage bag annular positioning groove is used to place stacked continuous garbage bags, and the use part of the stacked continuous garbage bags extends downward from the inner cavity of the rectangular hollow sleeve (501) into the collection chamber (600). A slider (502) is installed at the lower part of the inner cavity of the rectangular hollow sleeve (501). One side of the inner wall of the rectangular hollow sleeve (501) is a garbage bag closing limit part. The slider (502) and the garbage bag closing limit part are arranged opposite to each other. The electronic control module (800) includes a third driving element (806). The third driving element (806) is used to drive the slider (502) to reciprocate within the rectangular hollow sleeve (501) so that the slider (502) moves closer to or away from the garbage bag closing limit part. When the slider (502) moves closer to or further away from the garbage bag closing limit part, the slider (502) moves closer to or further away from the garbage bag closing limit part. 2) When the slider (502) is close to the garbage bag closing limit part, the slider (502) and the garbage bag closing limit part are used to clamp the upper part of the use part of the stacked continuous garbage bag so that the bag opening of the use part of the stacked continuous garbage bag is in a closed state. When the slider (502) is away from the garbage bag closing limit part, the bag opening of the use part of the stacked continuous garbage bag is in an open state. The cat litter clump in the sand shovel (401) is poured into the feces collection device, which means that the cat litter clump in the sand shovel (401) is poured into the bag opening of the use part of the stacked continuous garbage bag.

4. The automatic litter box as described in claim 3, characterized in that: The collection chamber (600) moves in the left and right direction, and the collection chamber (600) has a first state of extending out of the left side of the sand basin seat (200); a cutter (601) for manually cutting stacked continuous garbage bags is provided inside the collection chamber (600); a sealing strip (504) is fixedly provided on the side of the slider (502) facing the garbage bag closing limit part.

5. The automatic litter box as described in claim 3, characterized in that: The trash can (500) includes a guide sleeve (506), a trash can slider judgment component (515), a trash can top cover (514), a left lower cover plate (512), a right lower cover plate (513), a guide sleeve (511), a slide rod (510), and a slide rod (505). The trash can top cover (514), the left lower cover plate (512), and the right lower cover plate (513) are detachably and fixedly assembled into a trash can shell. A rectangular hollow sleeve (501) is provided on the trash can top cover (514). The trash can top cover (514) and the right lower cover plate (513) together form a first transmission structure mounting cavity, and the trash can top cover (514) and the left lower cover plate (512) together form a second transmission structure mounting cavity. The trash bag closing limit part is located on the front side of the rectangular hollow sleeve (501). The wall, the slider (502) moves back and forth in the front and back direction, the right side of the slider (502) is fixedly installed on the guide sleeve one (506), the left side of the slider (502) is fixedly installed on the guide sleeve two (510), the guide sleeve one (506) is slidably installed on the slide rod one (505), the guide sleeve two (511) is slidably installed on the slide rod two (510), the slide rod one (505) and the slide rod two (510) are fixedly installed on the garbage bin cover (514), the guide sleeve one (506) and the slide rod one (505) are both located in the first transmission structure mounting cavity, the guide sleeve two (511) and the slide rod two (510) are both located in the second transmission structure mounting cavity; the garbage bin slider judgment component (515) is used to detect the front travel limit position and the rear travel limit position of the slider (502) respectively.

6. The automatic litter box as described in claim 5, characterized in that: The garbage bin (500) includes an eighth rotary transmission component (509), a ninth rotary transmission component (900), a tenth rotary transmission component (904), an annular transmission component (901), a tensioning wheel (902), and a pressure plate (903) disposed in the mounting cavity of the second transmission structure. The eighth rotary transmission component (509), the ninth rotary transmission component (900), and the tenth rotary transmission component (904) are spaced apart in the horizontal direction, and their axes are all vertical. The seventh rotary transmission component (508) is coaxially fixed to the upper end of the eighth rotary transmission component (509), and the upper end of the seventh rotary transmission component (508) extends to the outside of the garbage bin cover (514). The upper end of the seventh rotary transmission component (508) is used to connect with the third drive element ( 806) Transmission connection: The eighth rotary transmission component (509) and the ninth rotary transmission component (900) form a gear transmission structure on one axial end. The annular transmission component (901) is sleeved on the other axial end of the ninth rotary transmission component (900) and the tenth rotary transmission component (904). The annular transmission component (901) is a synchronous belt or chain. The annular transmission component (901) is located in the left side area of ​​the slider (502). The pressure plate (903) is located inside the annular transmission component (901). The left end face of the slider (502) is fixed to the annular transmission component (901) as a whole by the pressure plate (903). The tensioning wheel (902) is located on the side of the annular transmission component (901) away from the slider (502).

7. The automatic litter box as described in claim 6, characterized in that: The electrical control module (800) includes an electrical control box, a fourth rotary transmission component (801), a fifth rotary transmission component (802), a sixth rotary transmission component (803), a first micro switch (807), a second micro switch (808), a third micro switch (809), a slotted photoelectric sensor (811), and a control board (813). The first drive element (804), the second drive element (805), and the third drive element (806) are all motors. The first drive element (804), the second drive element (805), the third drive element (806), the first micro switch (807), the second micro switch (808), the third micro switch (809), and the slotted photoelectric sensor (811) are all electrically connected to the control board (813). The first driving element (804), the second driving element (805), the third driving element (806), the first micro switch (807), the second micro switch (808), the third micro switch (809), the slotted photoelectric sensor (811), and the control board (813) are all fixedly installed in the electrical control box; a sand basin cover (300) is fixedly installed above the sand basin seat (200). The sand basin cover (300) has a ball-passing hole (301) that matches the upper opening of the rectangular hollow sleeve (501), a flip rod clearance hole (302) that matches the flip rod (408), and a basin mating part that matches the opening of the receiving cavity (101) of the basin body (100); the electrical control box is detachably fixed in the left rear side area of ​​the sand basin cover (300); The axis of the fourth rotary transmission component (801) is vertically arranged, and the fourth rotary transmission component (801) is coaxially fixedly connected to the output end of the first drive element (804); the upper outer peripheral edge of the basin (100) is provided with an outer ring gear, and the transmission teeth of the fourth rotary transmission component (801) mesh with the outer ring gear of the basin (100) to drive the basin (100) to rotate relative to the sand basin seat (200); The axis of the fifth rotary transmission component (802) is vertically arranged, and the fifth rotary transmission component (802) is coaxially fixedly connected to the output end of the second drive element (805); the cleaning device (400) includes a first rotary transmission component (404), a central connecting shaft (405), and a second rotary transmission component (406). The central connecting shaft (405) extends horizontally along the left and right directions. The first rotary transmission component (404) is coaxially fixed to the left end of the central connecting shaft (405), and the second rotary transmission component (406) is coaxially fixed to the right end of the central connecting shaft (405). The left and right ends of the central connecting shaft (405) are respectively rotatably arranged relative to the sand basin seat (200); the fifth rotary transmission component ( A bevel gear transmission mechanism is formed between the fifth rotary transmission component (802) and the first rotary transmission component (404), and a gear transmission mechanism is formed between the second rotary transmission component (406) and the third rotary transmission component (407). The rotation of the fifth rotary transmission component (802) drives the third rotary transmission component (407) to rotate. A rotation stroke detection block (414) is fixedly provided on the outer peripheral edge of the first rotary transmission component (404). When the rotation stroke detection block (414) is located in the detection groove of the slotted photoelectric sensor (811), the sand shovel (401) is in the waste disposal position. The rotation stroke corresponding to the sand shoveling position and the sand wiping position of the sand shovel (401) is controlled by the encoder provided with the second drive element (805). The axis of the sixth rotary transmission component (803) is vertically arranged. The sixth rotary transmission component (803) is coaxially fixedly connected to the output end of the third drive element (806). The lower end of the sixth rotary transmission component (803) has an inner ring gear. The inner ring gear of the sixth rotary transmission component (803) meshes with the transmission teeth at the upper end of the seventh rotary transmission component (508). The electrical control box can be separated from the sand basin cover (300) by moving upward. When the electrical control box moves upward, the fourth rotary transmission component (801) disengages from the outer ring gear of the basin body (100), the fifth rotary transmission component (802) disengages from the first rotary transmission component (404), and the sixth rotary transmission component (803) disengages from the seventh rotary transmission component (508). The trash can slider determination component (515) includes a slider detection rod that moves vertically relative to the trash can cover (514) and a slider detection rod resilient reset structure. The lower end of the slider detection rod extends into the second transmission structure mounting cavity and cooperates with the upper left surface of the slider (502) to form an inclined top mechanism. When the slider (502) causes the opening of the use part of the stacked continuous trash bag to be closed, a trash can slider determination component (515) located on the front side can enable the first micro switch (807) to be on. When the slider (502) causes the opening of the use part of the stacked continuous trash bag to be open, a trash can slider determination component (515) located on the rear side can enable the second micro switch (808) to be on. A stool collection chamber determination component (204) is installed on the sand basin seat (200). The stool collection chamber determination component (204) includes a stool collection chamber detection rod that moves vertically relative to the sand basin seat (200) and a stool collection chamber detection rod downward elastic reset structure. The stool collection chamber (600) moves in the left and right direction. The stool collection chamber (600) has a first state where it extends out of the left side of the sand basin seat (200). An inclined top block (602) is fixedly installed on the left inner wall of the stool collection chamber (600). The upper surface of the inclined top block (602) and the lower end of the stool collection chamber detection rod cooperate to form an inclined top mechanism. When the stool collection chamber (600) is in the second state where it is retracted into the sand basin seat (200), the stool collection chamber determination component (204) can make the third micro switch (808) turn on.

8. The automatic litter box as described in claim 7, characterized in that: The litter box cover (300) has a positioning and mounting cavity for the electrical control box that is compatible with the lower part of the electrical control box. The side wall of the positioning and mounting cavity for the electrical control box has a vertical insertion positioning block (303), and the outer wall of the electrical control box has a vertical insertion positioning groove that is compatible with the vertical insertion positioning block (303). The bottom wall of the positioning and mounting cavity for the electrical control box has a detection protrusion (304). A fourth micro switch (810) that is electrically connected to the control board (813) is fixedly installed inside the electrical control box. When the electrical control box is installed in place relative to the litter box cover (300), the detection protrusion (304) enables the fourth micro switch (810) to be in the on state. A pet detector (812) that is electrically connected to the control board (813) is fixedly installed on the front outer side of the electrical control box. The pet detector (812) is used to detect whether a pet enters and leaves the receiving cavity (101).

9. The automatic litter box as described in claim 7, characterized in that: The sand basin cover (300) is detachably fixed with a sand shovel cover (700) on the right rear side area. The sand shovel cover (700) is used to cover the sand shovel (401) when it is in the disposal position.

10. The automatic litter box as described in claim 7, characterized in that: The cleaning device (400) includes a quick-release connector one (415) and a quick-release connector two (416). The quick-release connector one (415) and the sand shovel (401) are fixed as an integral structure. The quick-release connector one (415) and the quick-release connector two (416) are detachably and fixedly connected by a snap-locking structure. The sand shovel shaft (409) is located between the second end of the quick-release connector two (416) and the flipping rod (408). The cleaning device (400) includes a support frame (410), a support frame cover (411), a fastening seat cover one (412), and a fastening seat cover two (413). The left end of the central connecting shaft (405) is fixed on the sand basin seat (200) by screws through the fastening seat cover one (412), and the right end of the central connecting shaft (405) is fixed on the sand basin seat (200) by screws through the support frame (410). The first end of the flipping rod (408) has a relative to the first... The three rotary transmission components (407) are coaxially arranged with a flip rod drive shaft. The flip rod drive shaft passes through the third rotary transmission component (407). The right end of the flip rod drive shaft is fixed on the sand basin seat (200) by a fastening seat cover (413) with screws. The left end of the flip rod drive shaft is fixed on the support frame (410) by a support frame cover (411) with screws. A bearing (402) is provided at the joint between the left end of the flip rod drive shaft and the support frame cover (411).

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