Self-cleaning cat litter basin

Abstract

The invention discloses a self-cleaning cat litter basin which comprises a base and a movable bin, bearing supports extending upwards are arranged on the two opposite sides of the base, shaft seats are arranged on the bearing supports, rotating shafts are coaxially arranged on the two opposite sides of the movable bin, the rotating shafts are rotationally installed on the shaft seats, and the rotating shafts are in driving connection with a driving mechanism. A sand bin is arranged in the movable bin, a sand filtering plate is arranged in the sand bin and divides the sand bin into an outer sand bin body and an inner sand bin body in the rotating direction of the sand bin, an excrement collecting bin is arranged above the inner sand bin body and comprises an excrement inlet, and the sand filtering plate is arranged between the outer sand bin body and the excrement inlet. The cat litter bin and the excrement collecting bin are integrally formed on the movable bin, the movable bin can be driven by the driving mechanism to rotate according to a set mode, polluted cat litter is automatically cleaned in the rotating process, and therefore the trouble and the workload of manual cat litter cleaning are effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pet appliances, in particular to a self-cleaning cat litter box. Background Art

[0002] Cat litter boxes are used to collect excrement from cats and other pets. When the cat litter in the litter box is contaminated by excrement, the user needs to clean the used cat litter to keep the cat litter clean. The cat litter cleaning operation includes separating the clean cat litter from the contaminated cat litter, recycling the clean cat litter for reuse, or replacing all the used cat litter. At this time, the used cat litter needs to be transferred out of the litter box. The workload of cat litter cleaning operation is large, and cat litter mixed with cat excrement will emit a peculiar smell, and the user experience of manually cleaning cat litter is not good. Therefore, how to assist users in cleaning the cat litter box and maintaining the cleanliness of the cat litter has become a technical problem that needs to be solved urgently. Summary of the Invention

[0003] The object of the present invention is to provide a self-cleaning cat litter box, in which a litter bin and a feces collection bin are integrally formed on a movable bin. The movable bin can rotate according to a set mode under the drive of a driving mechanism, and the contaminated cat litter is automatically cleaned during the rotation process, thereby effectively reducing the trouble of manually cleaning the cat litter and effectively solving the defects of the existing technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-cleaning cat litter box, comprising a base and a movable bin arranged above the base and rotatably connected to the base, wherein the base is provided with upwardly extending supporting brackets on opposite sides, the supporting brackets are provided with shaft seats, the shaft seats on the two oppositely arranged supporting brackets are coaxially arranged, the movable bin is coaxially provided with rotating shafts on opposite sides, the rotating shafts are rotatably mounted on the shaft seats, the rotating shafts are connected to a driving mechanism, and the driving mechanism drives the rotating shafts to rotate to drive the movable bin to rotate the shafts. In order to rotate the central axis, a sand bin is provided inside the movable bin, and the sand bin opening is opened at the circumferential wall of the movable bin. A sand filter plate is provided in the sand bin, and the sand filter plate separates the sand bin into an outer sand bin and an inner sand bin in the rotation direction of the sand bin. The outer sand bin is arranged near the edge of one side of the sand bin opening, and a feces collecting bin is provided above the inner sand bin, and the feces collecting bin includes a feces inlet, which is arranged on the inner wall of the sand bin and near the edge of the side of the sand bin opening facing the outer sand bin, and the sand filter plate is arranged between the outer sand bin and the feces inlet.

[0005] Preferably, a toilet bin cover is hingedly provided on the toilet inlet, and the toilet bin cover is hinged to the edge of the toilet inlet on one side close to the sand bin opening.

[0006] Preferably, the edge of the feces inlet extends axially inwardly toward the inner side of the feces collecting bin to form a surrounding edge, and a bag opening fastening frame is detachably sleeved on the surrounding edge.

[0007] Preferably, a connecting arm is provided on the inner side of the defecation entrance, the connecting arm is provided in parallel with the edge of the surrounding sleeve, a button hole is provided on the connecting arm, the bag opening fastening frame extends axially at the position corresponding to the connecting arm to form an elastic arm, a button is provided on the wall of the elastic arm, and the bag opening fastening frame is detachably connected to the surrounding sleeve through the mutual buckling action of the button and the button hole.

[0008] Preferably, a feces cleaning opening is provided on the outer wall surface of the feces collecting bin, and the feces cleaning opening hinged cover is provided with a feces cleaning cover.

[0009] The cam is hinged to the first end of the U-shaped seat so that the cam can be detachably connected to the U-shaped seat by the spring.

[0010] Preferably, the rotating shaft includes a bearing connector and a bearing, and the bearing is fixedly mounted on the rotating shaft through the bearing connector. When the rotating shaft is mounted on the shaft seat, the bearing connector is connected to the shaft seat, and the rotating shaft is rotatably connected to the shaft seat through the bearing.

[0011] Preferably, the driving mechanism includes a driving motor and a transmission gear set, one end of the transmission gear set is meshedly connected to the output shaft of the driving motor, and the other end is fixedly connected to the rotating shaft.

[0012] Preferably, a sand-laying pad is detachably laid on the bottom surface of the outer sand bin, the upper surface of the sand-laying pad is a flat plane, and a sand leakage pedal is detachably connected to the edge of the sand bin opening close to the side where the outer sand bin is located.

[0013] Preferably, a supporting foot is provided on the lower end surface of the base, and the supporting foot includes a foot sleeve fixedly connected to the base, a foot bolt slidably provided inside the foot sleeve and capable of sliding along the axial direction of the foot sleeve, and a weight sensor clamped between the foot sleeve and the foot bolt. The weight sensor includes a connecting part, a resistance strain gauge and an elastomer. The connecting part is fixedly connected to the foot sleeve, the elastomer is fixedly connected to the connecting part, the resistance strain gauge is provided on the elastomer, a conical fulcrum is provided on the surface of the elastomer facing away from the connecting part, a reinforcing pad is provided on the side of the foot bolt facing the weight sensor, and the conical fulcrum is point-contact connected to the reinforcing pad.

[0014] Preferably, a circuit board assembly, a rotation orientation sensor and an anti-stuck sensor are provided on the base, the rotation orientation sensor is provided on the shaft seat and is located in the projection area of ​​the rotating shaft, the anti-stuck sensor is provided at the front and / or rear edge of the base, the rotation orientation sensor, anti-stuck sensor and driving mechanism are all electrically connected to the circuit board assembly, and the circuit board assembly is electrically connected and provided with a control button group and a power interface.

[0015] Preferably, the base includes a base bottom plate and a supporting bracket connected to opposite sides of the base bottom plate, the supporting bracket includes a bracket panel and a bracket body that are covered and connected to each other, and a sand leakage hole is provided in the middle area of ​​the base bottom plate and passes through the upper and lower end surfaces of the base bottom plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention has a litter bin and a feces collection bin integrally formed on the movable bin. The movable bin can rotate according to a set mode under the drive of a driving mechanism, and the contaminated cat litter is automatically cleaned during the rotation process, thereby effectively reducing the trouble and workload of manual cat litter cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The explosion of the structure of the present invention Figure 1 ; Figure 2 The explosion of the structure of the present invention Figure 2 ; Figure 3 This is a schematic diagram of the connection relationship of the synchronous opening and closing mechanism of the present invention; Figure 4 Schematic diagram of the positional relationship between the toilet compartment cover and the toilet entrance in the closed state of the synchronous opening and closing mechanism of the present invention; Figure 5 This is a schematic diagram of the positional relationship between the toilet compartment cover and the toilet entrance of the synchronous opening and closing mechanism of the present invention; Figure 6 This is a schematic diagram of the separation structure of the movable compartment and the base of the present invention; Figure 7 This is a schematic diagram of the internal structure of the load-bearing bracket of the present invention; Figure 8 This is a schematic diagram of the internal structure of the feces collection bin of the present invention; Figure 9 This is an exploded view of the support leg structure of the present invention; Figure 10 Reference for the use of this invention Figure 1 ; Figure 11 Reference for the use of this invention Figure 2 .

[0018] In the figure: 1 base; 11 load-bearing bracket; 111 bracket panel; 112 bracket body; 113 bolt hole; 116 pulley mounting seat; 1161 folding area; 1162 unfolding area; 117 pulley; 1171 deformation positioning member; 12 base bottom plate; 121 sand leakage hole; 13 shaft seat; 14 sealing arm; 141 buckle hole; 15 elastic lock; 151 dial key; 152 buckle tongue; 153 reset spring; 16 elastic bolt; 17 circuit board assembly; 171 rotation direction sensor; 172 anti-stuck sensor; 173 control button group; 174 power interface; 18 support leg; 181 foot cover; 182 weight sensor ; 183 conical fulcrum; 184 reinforcement pad; 185 foot bolt; 186 anti-slip foot pad; 2 movable bin; 21 sand bin; 211 sand filter plate; 212 sand laying pad; 22 feces collecting bin; 221 feces inlet; 222 feces cleaning outlet; 223 surrounding edge; 224 connecting arm; 225 button hole; 23 feces bin cover; 231 aromatherapy bin; 232 aromatherapy through hole; 233 fixing rod; 234 movable rod; 24 feces cleaning cover; 25 rotating shaft; 251 bearing connector; 252 bearing; 26 bag opening fastening frame; 261 elastic arm; 262 button; 27 sand leakage pedal; 3 driving mechanism; 31 driving motor; 32 transmission gear set. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-11, a self-cleaning cat litter box, comprising a base 1 and a movable bin 2 arranged above the base 1 and rotatably connected to the base 1, wherein the base 1 is provided with a supporting bracket 11 extending upward on opposite sides, the supporting bracket 11 comprising a bracket panel 111 and a bracket body 112 which are covered and connected to each other, an axle seat 13 is provided on the supporting bracket 11, and the axle seats 13 on the two relatively arranged supporting brackets 11 are coaxially arranged, the axle seat 13 comprises a U-shaped seat and a sealing arm 14 enclosed at the opening above the U-shaped seat, the sealing arm 14 comprises a first end and a second end, the first end of the sealing arm is rotatably hinged to the U-shaped seat, and the second end is detachably connected to the U-shaped seat by an elastic lock 15 buckle, the elastic lock 15 buckle comprises a lock buckle body, a dial key 151 and respectively The buckle tongue 152 and the return spring 153 are arranged on the opposite sides of the lock body, the dial key 151 and the buckle tongue 152 are both arranged to extend out of the shell of the supporting bracket 11, the return spring 153 is clamped between the lock body and the supporting bracket 11, the return spring 153 is elastically connected to the lock body, and a buckle hole 141 is provided at the position of the buckle tongue 152 at the second end of the sealing arm 14, and the buckle tongue 152 can be buckled on the buckle hole 141. Under normal circumstances, the lock body always keeps the buckle tongue 152 extending out of the shell of the supporting bracket 11 under the elastic force of the return spring 153. When the sealing arm 14 encloses the cover and is arranged at the opening of the U-shaped seat, the buckle tongue 152 is buckled on the buckle hole 141, which plays a role in fixing. The locking mechanism 152 is configured to lock the locking mechanism 152 in a manner that allows the locking mechanism 152 to be locked in place and to release the locking mechanism 152 from locking. When the closure is in the closed position, the spring bolt 16 is pressed down and extends into the shell, providing space for the sealing arm 14 to be enclosed. When the buckling relationship between the buckle tongue 152 and the buckle hole 141 is released, the spring bolt 16 is elastically ejected to the outside of the bolt hole 113, which can automatically assist the sealing arm 14 to pop up and open from the U-shaped seat opening, thereby facilitating the arm opening operation. The movable warehouse 2 is coaxially provided with a rotating shaft 25 on opposite sides, and the rotating shaft 25 is rotatably mounted on the shaft seat 13. The opening and closing design of the sealing arm 14 can realize the detachable connection of the rotating shaft 25 to the shaft seat 13, thereby realizing the detachable connection between the movable warehouse 2 and the base 1, which is convenient for the movable warehouse 2 to be removed from the base 1 for cleaning. The rotating shaft 25 is drive-connected to the driving mechanism 3.The driving mechanism 3 includes a driving motor 31 and a transmission gear set 32. One end of the transmission gear set 32 ​​is meshed with the output shaft of the driving motor 31, and the other end is fixedly connected to the rotating shaft 25. The driving mechanism 3 drives the rotating shaft 25 to rotate to drive the movable warehouse 2 to rotate with the rotating shaft 25 as the central axis. A sand warehouse 21 is provided inside the movable warehouse 2. The warehouse opening of the sand warehouse 21 is opened at the circumferential wall of the movable warehouse 2. A sand filter plate 211 is provided in the sand warehouse 21. The sand filter plate 211 is used to filter the sand in the direction of rotation of the sand warehouse 21. The sand bin 21 is divided into an outer sand bin and an inner sand bin. The outer sand bin is located near the edge of the bin opening 21. A feces collection bin 22 is located above the inner sand bin. The feces collection bin 22 includes a feces inlet 221. The feces inlet 221 is located on the inner wall of the sand bin 21 and is located near the edge of the bin opening 21 facing the outer sand bin. The sand filter plate 211 is located between the outer sand bin and the feces inlet 221. A feces bin cover 23 is hingedly provided on the feces inlet 221. The feces bin cover 23 is hingedly connected to the feces inlet 221 on the edge of the bin opening 21.

[0021] The edge of the feces inlet 221 extends axially inward toward the inside of the feces collecting bin 22 to form a surrounding edge 223, and a bag opening fastening frame 26 is detachably sleeved on the surrounding edge 223. A connecting arm 224 is provided on the inside of the feces inlet 221, and the connecting arm 224 is arranged parallel to the surrounding edge 223. A button hole 225 is provided on the connecting arm 224. The bag opening fastening frame 26 extends axially at the position corresponding to the connecting arm 224 to form an elastic arm 261. A button 262 is provided on the wall of the elastic arm 261. The bag opening fastening frame 26 is connected to the button hole 225 through the button 262. 5 interlocks to achieve a detachable connection with the surrounding sleeve 223. During use, a garbage bag is placed inside the excrement collection bin 22. The opening of the garbage bag can be detachably fastened to the surrounding sleeve 223 via a bag opening fastening frame 26. The provision of the bag opening fastening frame 26 facilitates the installation of the garbage bag, and the garbage bag installed with the bag opening fastening frame 26 is stable and not easily removed. The excrement collection bin 22 is provided with an excrement cleaning opening 222 on the outer wall. The excrement cleaning opening 222 is hingedly covered with a feces cleaning cover 24. When cleaning the excrement collection bin 22, the garbage bag can be removed by opening the feces cleaning cover 24. The excrement collection bin 22 is provided with an aromatherapy chamber 231. The wall of the excrement collection bin 22 is provided with an aromatherapy through hole 232 that communicates with the aromatherapy chamber 231. Fragrance material is placed in the aromatherapy chamber 231. The fragrance emitted by the fragrance material enters the excrement collection bin 22 and effectively removes odors from the excrement collection bin 22.

[0022] A synchronous opening and closing mechanism is provided between the toilet compartment cover 23 and the movable compartment 2, and the synchronous opening and closing mechanism includes a fixed rod 233 and a movable rod 234 provided on the toilet compartment cover 23, and a first guide rail 116 and a second guide rail 117 provided on the supporting bracket 11. The fixed rod 233 and the movable rod 234 are both provided parallel to the length direction of the toilet compartment cover 23, and the movable rod 234 is placed on the side of the fixed rod 233 facing the rotating shaft 25. The first guide rail 116 and the second guide rail 117 are both arc-shaped guide rails. The first guide rail 116 takes the rotating shaft 25 as the central axis, and the second guide rail 117 takes the fixing rod 233 as the central axis. The planes on which the first guide rail 116 and the second guide rail 117 are located are parallel to each other. The first guide rail 116 includes a folding area 1161 and an unfolding area 1162. The folding area 1161 and the unfolding area 1162 are in contact with each other at opposite ends. The distance R1 between the track wall of the folding area 1161 on the side away from the rotating shaft 25 and the central axis of the rotating shaft 25 is smaller than the distance R1 between the track wall of the unfolding area 162 on the side away from the rotating shaft 25 and the rotating shaft 25. The distance R2 between the center axes of the shafts 25, the second guide rail 117 is arranged between the fixed rod 233 and the rotating shaft 25, the movable rod 234 is slidably inserted in the second guide rail 117, and a deformation positioning member 1171 is provided in the second guide rail 117. The deformation positioning member 1171 is a silicone sheet, and the circumferential edge of the deformation positioning member 1171 is fixedly connected to the circumferential wall of the second guide rail 117. A fence-shaped crack is opened in the middle of the deformation positioning member 1171, and the movable rod 234 is arranged to pass through the fence-shaped crack, and is damped and connected to the deformation positioning member 1171 during the sliding process relative to the second guide rail 117. When the movable warehouse 2 rotates clockwise around the rotating shaft 25, the fixed rod 233, the movable rod 234 and the second guide rail 117 all move along with the movable warehouse 2. Since the fixed rod 233 and the second guide rail 117 are fixed to the movable warehouse 2, both of them rotate and move around the rotating shaft 25. At this time, the end of the movable rod 234 is inserted into the first guide rail 116, and the movable rod 234 moves in the second guide rail 117 at the lower limit of the guiding effect of the first guide rail 116. When the movable rod 234 is located in the folding area 1161, the toilet bin cover 23 is in a covering state relative to the toilet entrance 221. When the movable rod 234 enters the unfolding area 1162 from the folding area 1161, the movable rod 234 is guided by the unfolding area 1162 and cooperates with the orientation change of the first guide rail 117, and the toilet bin cover 23 is gradually opened from the covering state until the movable bin 2 rotates to the target position, and the toilet bin cover 23 and the toilet entrance 221 form an opening shape of not less than 90 degrees.

[0023] The rotating shaft 25 includes a bearing connector 251 and a bearing 252. The bearing 252 is fixedly mounted on the rotating shaft 25 via the bearing connector 251. When the rotating shaft 25 is mounted on the shaft seat 13, the bearing connector 251 is connected to the shaft seat 13, and the rotating shaft 25 is rotatably connected to the shaft seat 13 via the bearing 252. The inner side surface of the base 1 and the circumferential side surface of the movable chamber 2 are both formed with guide arc surfaces that can adapt to rotation. A pulley seat 116 is provided on the inner side surface of the base 1. A pulley 117 is rotatably mounted on the pulley seat 116. The rotation plane of the pulley 117 is parallel to the rotation plane of the movable chamber 2. The pulley 117 is in circumferential contact with the movable chamber 2 on the edge of the side facing the movable chamber 2. Through the cooperation of these two smooth auxiliary mechanisms, the movable chamber 2 can achieve a smooth and gentle shape conversion effect when rotating relative to the base 1.

[0024] A sand-laying pad 212 is detachably provided on the bottom surface of the outer sand bin, and the upper surface of the sand-laying pad 212 is a flat surface. A sand-draining pedal 27 is detachably connected to the edge of the opening of the sand bin 21 near the side where the outer sand bin is located.

[0025] The lower end surface of the base 1 is provided with a support leg 18, and the support leg 18 includes a foot sleeve 181 fixedly connected to the base 1, a foot bolt 185 slidably sleeved inside the foot sleeve 181 and slidable along the axial direction of the foot sleeve 181, and a weight sensor 182 clamped between the foot sleeve 181 and the foot bolt 185. The weight sensor 182 includes a connecting portion, a resistance strain gauge and an elastic body. The connecting portion is fixedly connected to the foot sleeve 181, the elastic body is fixedly connected to the connecting portion, the resistance strain gauge is provided on the elastic body, and a conical fulcrum 183 is provided on the surface of the elastic body facing away from the connecting portion. The foot bolt 185 is facing A reinforcement pad 184 is provided on one side of the weight sensor 182, and the conical fulcrum 183 is point-connected to the reinforcement pad 184. The reinforcement pad 184 can be made of steel sheet. The reinforcement pad 184 is used to support the conical fulcrum 183, which can better protect the foot bolt 185 and effectively extend the service life of the foot bolt 185. The conical feature of the conical fulcrum 183 can effectively adapt to the shape change of the support leg 18, so that good contact can be guaranteed when the support leg 18 is reasonably tilted, thereby improving the sensing stability of the weight sensor 182. The lower end surface of the foot bolt 185 is installed with an anti-slip foot pad 186.

[0026] A circuit board assembly 17, a rotation orientation sensor 171 and an anti-stuck sensor 172 are provided on the base 1. The rotation orientation sensor 171 is provided on the shaft seat 13 and is located in the projection area of ​​the rotating shaft 25. The anti-stuck sensor 172 is provided at the front and / or rear edge of the base 1. The rotation orientation sensor 171, the anti-stuck sensor 172 and the driving mechanism 3 are all electrically connected to the circuit board assembly 17. The circuit board assembly 17 is electrically connected and is provided with a control button group 173 and a power interface 174.

[0027] The base 1 includes a base bottom plate 12 and a supporting bracket 11 connected to the opposite sides of the base bottom plate 12. A sand leakage hole 121 is provided in the middle area of ​​the base bottom plate 12 and passes through the upper and lower end surfaces of the base bottom plate 12. The setting of the sand leakage hole 121 can prevent the occurrence of sand accumulation in the base of the cat litter box during use, which can improve the cleanliness of the cat litter box.

[0028] Working mode: The working circuit connected to the cat litter box is controlled by the control button group 173. At this time, the cat litter box is in standby state. In the standby state, the feces inlet 221 and the feces bin cover 23 are in a closed state, and the litter pad 212 is covered with clean cat litter. When the pet cat enters the litter bin 21, the weight sensor 182 on the support leg 18 senses the entry of the pet cat and triggers a command to the circuit board assembly 17. When the pet cat finishes defecating and exits the litter bin 21, the weight sensor 182 on the support leg 18 recognizes the pet cat leaving the bin signal and sends a corresponding signal to the circuit board assembly 17. After receiving the signal and confirming it through review, the circuit board assembly 17 starts the driving mechanism 3 to drive the movable bin 2 to rotate clockwise with the rotating shaft 25 as the center axis. During the rotation, the feces bin cover 23 is gradually opened synchronously under the action of the synchronous opening and closing mechanism, and the cat litter on the sand pad 212 of the outer sand bin that is not contaminated and agglomerated by cat feces will be on the sand filter plate After being filtered by 211, the cat litter flows into the inner sand bin and is temporarily recovered. The cat litter contaminated by cat feces is blocked on the sand filter plate 211 due to its large volume. When the movable bin 2 continues to rotate so that the sand filter plate 211 is inclined toward the feces inlet 221, the cat litter contaminated by cat feces will roll into the garbage bag inside the feces collection bin 22 and be collected. Subsequently, the rotation direction sensor 171 recognizes that the movable bin 2 has rotated to the set position and then controls the movable bin 2 to rotate counterclockwise through the circuit board assembly 17. During the rotation of the movable bin 2, the feces bin cover 23 is synchronously and gradually closed under the action of the synchronous opening and closing mechanism, and the cat litter temporarily stored in the inner sand bin that is not contaminated by cat feces flows back into the sand-laying pad 212 in the outer sand bin for continued use. In order to spread the cat litter more evenly on the sand-laying pad 212, the movable bin 2 will rotate back and forth slightly after rotating counterclockwise to the set limit position, thereby achieving the effect of leveling the cat litter. In addition, it should be pointed out in particular that the setting of the litter bin cover 23 is, on the one hand, to close the litter inlet 221 to prevent the odor inside the litter bin 22 from leaking out and polluting the environment to the greatest extent; on the other hand, because the litter bin cover 23 can cover a larger area of ​​the inner wall of the litter bin 21 when it is in the closed state, it reduces the possibility of the pet cat entering the litter bin 21 and being contaminated by cat feces pollutants remaining on the wall of the litter bin 21.

[0029] To sum up: In the present invention, a litter bin 21 and a feces collection bin 22 are integrally formed on the movable bin 2. The movable bin 2 can rotate according to a set mode under the drive of the driving mechanism 3. During the rotation, the contaminated cat litter is automatically cleaned, thereby effectively reducing the trouble and workload of manual cleaning of cat litter.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning cat litter box, comprising a base (1) and a movable compartment (2) disposed above the base (1) and rotatably connected to the base (1), characterized in that: The base (1) is provided with supporting brackets (11) extending upward on opposite sides, and an axle seat (13) is provided on the supporting bracket (11). The axle seats (13) on the two supporting brackets (11) are coaxially arranged. The movable warehouse (2) is coaxially provided with rotating shafts (25) on opposite sides, and the rotating shaft (25) is rotatably mounted on the axle seat (13). The rotating shaft (25) is connected to the driving mechanism (3). The driving mechanism (3) drives the rotating shaft (25) to rotate so as to drive the movable warehouse (2) to rotate around the rotating shaft (25) as the central axis. A sand warehouse (21) is provided inside the movable warehouse (2). The sand warehouse (2 1) The silo opening is opened at the circumferential wall surface of the movable silo (2); a sand filter plate (211) is provided in the sand silo (21); the sand filter plate (211) divides the sand silo (21) into an outer sand silo and an inner sand silo in the rotation direction of the sand silo (21); the outer sand silo is arranged near an edge of one side of the silo opening of the sand silo (21); a feces collection silo (22) is arranged above the inner sand silo; the feces collection silo (22) includes a feces inlet (221); the feces inlet (221) is arranged at the inner wall surface of the sand silo (21) and near an edge of the side of the silo opening facing the outer sand silo; the sand filter plate (211) is arranged between the outer sand silo and the feces inlet (221).

2. A self-cleaning cat litter box according to claim 1, characterized in that: A toilet bin cover (23) is hingedly provided on the toilet inlet (221), and the toilet bin cover (23) is hingedly connected to an edge of the toilet inlet (221) close to the opening of the sand bin (21).

3. A self-cleaning cat litter box according to claim 1 or 2, characterized in that: The edge of the feces inlet (221) extends axially inwardly toward the inside of the feces collecting bin (22) to form a surrounding edge (223), and a bag opening fastening frame (26) is detachably sleeved on the surrounding edge (223).

4. A self-cleaning cat litter box according to claim 3, characterized in that: A connecting arm (224) is provided on the inner side of the stool inlet (221), and the connecting arm (224) is provided in parallel with the surrounding edge (223). A button hole (225) is provided on the connecting arm (224). The bag opening fastening frame (26) extends axially at the position corresponding to the connecting arm (224) to form an elastic arm (261). A button (262) is provided on the wall surface of the elastic arm (261). The bag opening fastening frame (26) is detachably connected to the surrounding edge (223) through the mutual engagement of the button (262) and the button hole (225).

5. The self-cleaning cat litter box according to claim 1, characterized in that: The feces collecting bin (22) is provided with a feces cleaning opening (222) on the outer wall surface, and the feces cleaning opening (222) is hingedly covered with a feces cleaning cover (24).

6. The self-cleaning cat litter box according to claim 1, characterized in that: The shaft seat (13) includes a U-shaped seat and a sealing arm (14) enclosed at an opening above the U-shaped seat, the sealing arm (14) includes a first end and a second end, the first end of the sealing arm is rotatably hinged to the U-shaped seat, and the second end is detachably connected to the U-shaped seat via an elastic lock (15) buckle, the elastic lock (15) buckle includes a lock body, a dial key (151), and a buckle tongue (152) and a reset spring (153) respectively arranged on opposite sides of the lock body, the dial key (151) and the buckle tongue (152) are both extended out of the outer side of the housing of the support bracket (11), and the reset spring (153) is provided. The spring (153) is clamped between the lock body and the supporting bracket (11), and the reset spring (153) is elastically connected to the lock body. A buckle hole (141) is provided at the position of the buckle tongue (152) corresponding to the second end of the sealing arm (14), and the buckle tongue (152) can be buckled on the buckle hole (141). The U-shaped seat is located on the end surface below the second end of the sealing arm (14) and is provided with a bolt hole (113) that passes through the inside and outside of the shell. An elastic bolt (16) is provided in the bolt hole (113), and the upper end of the elastic bolt (16) extends out of the bolt hole (113).

7. The self-cleaning cat litter box according to claim 1, characterized in that: The rotating shaft (25) includes a bearing connector (251) and a bearing (252), wherein the bearing (252) is fixedly mounted on the rotating shaft (25) via the bearing connector (251). When the rotating shaft (25) is mounted on the shaft seat (13), the bearing connector (251) is connected to the shaft seat (13), and the rotating shaft (25) is rotatably connected to the shaft seat (13) via the bearing (252).

8. The self-cleaning cat litter box according to claim 1, characterized in that: The driving mechanism (3) comprises a driving motor (31) and a transmission gear set (32); one end of the transmission gear set (32) is meshedly connected to the output shaft of the driving motor (31), and the other end is fixedly connected to the rotating shaft (25).

9. The self-cleaning cat litter box according to claim 1, characterized in that: A sand-laying pad (212) is detachably laid on the bottom surface of the outer sand bin, and the upper surface of the sand-laying pad (212) is a flat surface. A sand-leaking pedal (27) is detachably connected to the edge of the opening of the sand bin (21) near the side where the outer sand bin is located.

10. The self-cleaning cat litter box according to claim 1, characterized in that: A support leg (18) is provided on the lower end surface of the base (1), the support leg (18) comprising a foot sleeve (181) fixedly connected to the base (1), a foot bolt (185) slidably sleeved inside the foot sleeve (181) and slidable along the axial direction of the foot sleeve (181), and a weight sensor (182) clamped between the foot sleeve (181) and the foot bolt (185), the weight sensor (182) comprising a connecting portion, a resistance strain gauge and an elastic body, the connecting portion being fixedly connected to the foot sleeve (181), the elastic body being fixedly connected to the connecting portion, the resistance strain gauge being provided on the elastic body, a conical fulcrum (183) being provided on the surface of the elastic body on the side facing away from the connecting portion, a reinforcing pad (184) being provided on the side of the foot bolt (185) facing the weight sensor (182), the conical fulcrum (183) being point-contact connected to the reinforcing pad (184).

11. The self-cleaning cat litter box according to claim 1, characterized in that: The base (1) is provided with a circuit board assembly (17), a rotational orientation sensor (171) and an anti-stuck sensor (172); the rotational orientation sensor (171) is provided on the shaft seat (13) and is located in the projection area of ​​the rotating shaft (25); the anti-stuck sensor (172) is provided at the front and / or rear edge of the base (1); the rotational orientation sensor (171), the anti-stuck sensor (172) and the driving mechanism (3) are all electrically connected to the circuit board assembly (17); and the circuit board assembly (17) is electrically connected with a control button group (173) and a power interface (174).

12. A self-cleaning cat litter box according to any one of claims 1, 10, and 11, characterized in that: The base (1) comprises a base bottom plate (12) and a bearing bracket (11) connected to opposite sides of the base bottom plate (12); the bearing bracket (11) comprises a bracket panel (111) and a bracket body (112) that are mutually covered and connected; a sand leakage hole (121) is provided in the middle area of ​​the base bottom plate (12) and passes through the upper and lower end surfaces of the base bottom plate (12).

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