A fully automatic cat toilet capable of automatically collecting feces

Abstract

The utility model relates to pet supplies technical field, concretely is a kind of full-automatic cat toilet of automatic collection of excrement, including litter box, the excrement collection bin located at one end of litter box and litter shovel movable in litter box, the other end of litter box is equipped with power unit, and power unit connects transmission unit;Transmission unit has two groups, and two groups of transmission unit are symmetrically distributed in the two sides of litter box width direction;Litter shovel includes pivot, pivot is set along litter box width direction and both ends are connected with corresponding transmission unit, and the two sides of litter box width direction are equipped with the passage for pivot to pass through movement;Litter box side along length direction is equipped with limit plate, both ends of pivot are connected with bearing, and bearing is always attached limit plate in the process that pivot moves with transmission unit;Pivot is also equipped with the elastic element of making litter shovel reset, and the utility model structure design is reasonable, transmission is stable, effectively prevent to clip injury pet, applicable to the automation excrement cleaning of family and pet place.

Description

Technical Field

[0001] This utility model relates to the field of pet supplies technology, and in particular to a fully automatic cat toilet that automatically collects feces. Background Technology

[0002] Traditional non-automatic litter boxes require regular manual cleaning of feces, which can lead to unpleasant odors and environmental pollution if not handled promptly. To address this issue, automatic litter boxes have emerged, but most employ a rack and pinion drive system. During operation, litter can easily splatter onto the gears, causing jamming, noise, or even malfunctions. Furthermore, existing automatic litter boxes typically use rigid stop designs, with rigid stops for both forward and backward movement. If a kitten accidentally enters the litter box during the return motion, the litter scoop could pinch and injure the kitten, posing a safety risk. Additionally, the litter scoop's close-to-the-ground movement during the return motion means that if the initial cleaning is incomplete, residual feces can be scraped and spread, further increasing cleaning difficulty and hygiene issues. Therefore, there is an urgent need for an automatic litter box that offers stable transmission, reliability, and ease of maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a fully automatic cat toilet that automatically collects feces, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic cat litter box that automatically collects feces, comprising a litter box, a feces collection chamber located at one end of the litter box, and a litter scoop that can move within the litter box. A power unit is provided at the other end of the litter box, and the power unit is connected to a transmission unit. There are two sets of transmission units, symmetrically distributed on both sides of the litter box in the width direction. The litter scoop includes a rotating shaft, which is arranged along the width direction of the litter box and connected to corresponding transmission units at both ends. Channels for the rotating shaft to pass through and move are provided on both sides of the litter box in the width direction. Limiting plates are provided on both sides of the litter box along the length direction. Bearings are connected to both ends of the rotating shaft, and the bearings always conform to the limiting plates as the rotating shaft moves with the transmission unit. An elastic element is also sleeved on the rotating shaft to return the litter scoop to its original position.

[0005] Preferably, the power unit includes a reduction motor, a drive pulley, two tension pulleys located on both sides of the drive pulley, and a timing belt. The drive pulley is connected to the output shaft of the reduction motor, and the timing belt is sleeved on the drive pulley and the two tension pulleys.

[0006] Preferably, the transmission unit includes a lead screw, a driven pulley located at the end of the lead screw and connected to a timing belt, and a lead screw nut located on the lead screw and connected to a rotating shaft.

[0007] Preferably, the elastic element is a torsion spring, the bearing is connected to the rotating shaft through a bearing mounting seat, one end of the torsion spring is connected to the bearing mounting seat, and the other end of the torsion spring is connected to the lead screw nut.

[0008] Preferably, the limiting plate has a guiding curved surface to guide the movement of the bearing when the cat litter scoop moves forward, causing the cat litter scoop to flip.

[0009] Preferably, it also includes dustproof brushes symmetrically arranged on both sides of the litter box, with the dustproof brushes located between the channel and the lead screw.

[0010] Preferably, the top of the waste collection chamber is provided with an openable and closable waste collection chamber cover.

[0011] Compared with existing technologies, this utility model provides a fully automatic cat litter box that automatically collects feces, with the following beneficial effects: This utility model achieves precise control and forced rotation of the litter scoop during its forward movement through a symmetrically arranged transmission unit and limiting plate guiding structure, ensuring that feces are effectively scooped up and smoothly deposited into the collection chamber; the use of a screw drive and dustproof brush design significantly improves transmission stability and dustproof effect, avoiding jamming and abnormal noise caused by cat litter intrusion; a specially designed torsion spring structure keeps the litter scoop in an elevated state during the return process, not only smoothing the litter surface but also avoiding obstacles, greatly improving safety and effectively preventing injury to pets; the collection chamber cover closes automatically by gravity, preventing odor diffusion. The overall structure is reasonable, reliable in operation, and easy to maintain, possessing good practicality and promotional value. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the power unit side of this utility model; Figure 3 for Figure 1 A cross-sectional view of the left side of the structure; Figure 4 for Figure 1 A cross-sectional view taken from the main view direction.

[0013] Explanation of reference numerals in the attached diagram: 1. Litter box; 11. Channel; 2. Waste collection compartment; 21. Waste collection compartment cover; 3. Litter scoop; 31. Shaft; 4. Power unit; 41. Gear motor; 42. Drive wheel; 43. Tensioner wheel; 44. Synchronous belt; 5. Transmission unit; 51. Lead screw; 52. Driven wheel; 53. Lead screw nut; 6. Limiting plate; 61. First limiting plate; 62. Second limiting plate; 63. Third limiting plate; 64. Fourth limiting plate; 65. Fifth limiting plate; 7. Bearing; 8. Torsion spring; 9. Bearing mounting base; 10. Dustproof brush. Detailed Implementation

[0014] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model: like Figures 1 to 4 As shown, this utility model provides a fully automatic cat litter box that automatically collects feces, including a litter box 1, a feces collection chamber 2 located at one end of the litter box 1, and a litter scoop 3 that can move within the litter box 1. The litter box 1 serves as the main container for holding cat litter; the feces collection chamber 2 is located at one end of the litter box 1 for collecting feces; the litter scoop 3 is movably disposed within the litter box 1 and is responsible for performing the scooping and pushing actions.

[0015] The top of the waste collection chamber 2 is equipped with an openable waste collection chamber cover 21. The waste collection chamber cover 21 is hinged to the body of the waste collection chamber 2 via a pivot structure, allowing the waste collection chamber cover 21 to rotate upward around the hinge point to open. When no external force is applied, the waste collection chamber cover 21 closes automatically by its own weight, thereby effectively sealing the waste collection chamber 2 and preventing the spread of odors.

[0016] The other end of the litter box 1 is equipped with a power unit 4, which includes a reduction motor 41, a drive pulley 42, two tension pulleys 43 located on both sides of the drive pulley 42, and a timing belt 44. The drive pulley 42 is connected to the output shaft of the reduction motor 41, and the timing belt 44 is fitted onto the drive pulley 42 and the two tension pulleys 43, forming a stable triangular transmission path. This ensures the smoothness and reliability of power transmission and prevents the timing belt 44 from slipping or falling off during operation.

[0017] The power unit 4 is connected to the transmission unit 5. There are two sets of transmission units 5, symmetrically distributed on both sides of the litter box 1 in the width direction. Each transmission unit 5 includes a lead screw 51, a driven wheel 52 at the end of the lead screw 51, and a lead screw nut 53 on the lead screw 51. The driven wheel 52 is connected to a synchronous belt 44, transmitting rotational power to the lead screw 51. The litter scoop 3 includes a rotating shaft 31, which is arranged along the width direction of the litter box 1 and connected to the corresponding transmission unit 5 at both ends. Specifically, both ends of the rotating shaft 31 are connected to the lead screw nuts 53 on both sides. Channels 11 are provided on both sides of the litter box 1 in the width direction for the rotating shaft 31 to pass through and move. When the lead screw 51 rotates, the lead screw nut 53 drives the rotating shaft 31 and the litter scoop 3 to move along the length direction of the litter box 1.

[0018] The litter box 1 has limiting plates 6 along its length on both sides. Bearings 7 are connected to both ends of the rotating shaft 31. The bearings 7 remain in contact with the limiting plates 6 as the rotating shaft 31 moves with the transmission unit 5. The limiting plates 6 have guiding curved surfaces that guide the bearings 7 as the litter scoop 3 moves forward, thus enabling the litter scoop 3 to flip. The limiting plates 6 are not a single curved surface structure, but rather composed of five spatially precisely connected independent plate segments: a first limiting plate 61, a second limiting plate 62, a third limiting plate 63, a fourth limiting plate 64, and a fifth limiting plate 65. The limiting plates are smoothly connected by rounded chamfers. Their height arrangement is as follows: the first limiting plate 61 is the highest, the third limiting plate 63 is the lowest, and the fifth limiting plate 65 is between the first and third limiting plates 61, and closer to the height of the first limiting plate 61. The functions of each limiting plate are as follows: First limiting plate 61: This section is a horizontally positioned plate that forms the initial path for the movement of the litter scoop 3. When the litter scoop 3 starts moving forward from the initial position, the bearing 7 rolls against the upper surface of this section, keeping the litter scoop 3 vertical and moving forward smoothly, so that the scoop head of the litter scoop 3 is ready to contact the feces to be cleaned.

[0019] Second limiting plate 62: This section is a downwardly inclined plate, connected to the end of the first limiting plate 61. As the litter scoop 3 continues to move forward, the bearing 7 is guided downward by the inclined surface, forcing the litter scoop 3 to rotate upward around the pivot 31, and the scoop head of the litter scoop 3 is lifted accordingly. At this time, the upwardly rotating front end of the litter scoop 3 pushes open the closed waste collection compartment cover 21.

[0020] Third limiting plate 63: This section is a horizontally positioned plate located after the second limiting plate 62. When the bearing 7 is running in this section, the litter shovel 3 remains in an upward-tilted state, which can stably support and move the scooped-up feces, pushing it towards the feces collection chamber 2. At this time, the shovel head of the litter shovel 3 has extended into the feces collection chamber 2.

[0021] Fourth limiting plate 64: This section is an upwardly inclined plate that connects to the end of the third limiting plate 63. After the bearing 7 enters this section, it is guided to move upward, driving the litter scoop 3 to continue rotating around the pivot 31, gradually returning from an upward-turned state to a near-vertical state. At the same time, the top of the litter scoop 3 continuously pushes the waste collection chamber cover 21, causing it to fully open against gravity, thus opening a channel for feces to fall into the waste collection chamber 2.

[0022] Fifth limiting plate 65: This section is a horizontally positioned plate, located after the fourth limiting plate 64. After the litter bin cover 21 is fully opened, the bearing 7 operates in this section, keeping the litter scoop 3 vertical and ensuring that the feces completely detach from the litter scoop 3 under gravity and fall into the litter bin 2. Subsequently, the litter scoop 3 begins to return to its original position and moves backward. After disengaging from the litter bin cover 21, the litter bin cover 21 automatically closes under its own weight.

[0023] To achieve automatic return and obstacle avoidance functions for the litter scoop 3, an elastic element, a torsion spring 8, is fitted onto the rotating shaft 31 to return the litter scoop 3 to its original position. The bearing 7 is connected to the rotating shaft 31 via a bearing mounting seat 9. One end of the torsion spring 8 is connected to the bearing mounting seat 9, and the other end is connected to the lead screw nut 53. During the return process, the torsion spring 8 provides an elastic torque that keeps the litter scoop 3 in an upward trend, allowing it to move above the litter layer during the return stroke, smoothing the litter surface and preventing it from scraping along the ground and causing fecal residue to spread. More importantly, if the litter scoop 3 touches an obstacle (such as a stray kitten) during the return stroke, the resistance will overcome the torque of the torsion spring 8, forcing the litter scoop 3 to flip forward, thus making room for the obstacle and achieving safe avoidance, greatly reducing the risk of pinching.

[0024] Dustproof brushes 10 are symmetrically arranged on both sides of the litter box 1. The dustproof brushes 10 are located between the channel 11 and the lead screw 51, forming a physical barrier to prevent cat litter that may splash during use from entering the lead screw 51 and lead screw nut 53 and other transmission components, preventing transmission jamming or abnormal noise caused by cat litter, and significantly improving the service life and reliability of the equipment.

[0025] The working process of this utility model is as follows: 1. Manure removal, cleaning, and unloading process: When the cleaning program is started, the reduction motor 41 rotates forward, driving the drive wheel 42 to rotate. Power is transmitted to the driven wheels 52 on both sides through the synchronous belt 44, driving the two lead screws 51 to rotate synchronously. The lead screw nut 53 moves along the lead screw 51 towards the collection chamber 2, and the lead screw nut 53 drives the litter scoop 3 to move forward through the rotating shaft 31. During this process, the bearings 7 fixed at both ends of the rotating shaft 31 are constrained by the guide surface of the limiting plate 6 and are forced to move along the trajectory from the first limiting plate 61 to the fifth limiting plate 65. This trajectory forcibly controls the litter scoop 3 to complete a series of continuous actions: maintaining a vertical forward movement in preparation for scooping feces in the first limiting plate 61 section; flipping upward and opening the collection chamber cover 21 in the second limiting plate 62 section; maintaining an upward flipped state and pushing feces horizontally in the third limiting plate 63 section; turning to a near-vertical state and extending into the collection chamber 2 in the fourth limiting plate 64 section; and finally maintaining a vertical state in the fifth limiting plate 65 section to ensure that the feces completely fall into the collection chamber 2. Throughout the entire forward and unloading process, the constraint of the limiting plate 6 on the bearing 7 is rigid (i.e., hard limiting), ensuring the accuracy and power of the cleaning action.

[0026] 2. The process of putting the litter scoop back in its place: After the cleaning and unloading actions are completed, the reduction motor 41 rotates in the opposite direction, driving the lead screw nut 53 backward (away from the collection chamber 2) through the transmission unit 5, thus returning the litter scoop 3 to its initial position. During the return process, the constraint effect of the limiting plate 6 on the bearing 7 changes. Due to the curved design of the limiting plate 6, the return path no longer forcibly controls the bearing 7. At this time, the elastic potential energy stored in the torsion spring 8 begins to be released, and the torque of the torsion spring 8 causes the litter scoop 3 to have an upward tendency. Therefore, the litter scoop 3 does not scrape along the bottom when returning, but rather sweeps across the litter, while simultaneously smoothing the surface of the litter. If a kitten accidentally enters the litter box 1 during the return process, the litter scoop 3 will experience a forward resistance when it touches the kitten's body. This resistance will overcome the torque of the torsion spring 8, pushing the litter scoop 3 to rotate forward around the pivot 31, thus creating escape space for the kitten and greatly reducing the risk of pinching. This design implements an elastic or soft limiting mechanism when returning to its original position, which contrasts sharply with the hard limiting mechanism when moving forward, together forming the safety guarantee of this utility model. Finally, driven by the lead screw nut 53 and guided by the torsion spring 8, the cat litter shovel 3 returns to its initial position, ready to perform the next cleaning cycle.

[0027] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A fully automatic cat litter box that automatically collects feces, comprising a litter box (1), a feces collection chamber (2) located at one end of the litter box (1), and a litter scoop (3) movable within the litter box (1), characterized in that: The litter box (1) is equipped with a power unit (4) at the other end, which is connected to a transmission unit (5). There are two sets of transmission units (5), which are symmetrically distributed on both sides of the width direction of the litter box (1). The litter scoop (3) includes a rotating shaft (31), which is set along the width direction of the litter box (1) and both ends are connected to the corresponding transmission unit (5). Both sides of the litter box (1) are provided with channels (11) for the rotating shaft (31) to pass through and move. The litter box (1) is provided with a limiting plate (6) along the length direction on both sides. Both ends of the rotating shaft (31) are connected with bearings (7). The bearings (7) always fit against the limiting plate (6) during the movement of the rotating shaft (31) with the transmission unit (5). The rotating shaft (31) is also fitted with an elastic element to return the litter scoop (3) to its original position.

2. The fully automatic cat litter box for automatically collecting feces according to claim 1, characterized in that: The power unit (4) includes a reduction motor (41), a drive wheel (42), two tensioning wheels (43) located on both sides of the drive wheel (42) and a timing belt (44). The drive wheel (42) is connected to the output shaft of the reduction motor (41), and the timing belt (44) is sleeved on the drive wheel (42) and the two tensioning wheels (43).

3. The fully automatic cat litter box for automatically collecting feces according to claim 2, characterized in that: The transmission unit (5) includes a lead screw (51), a driven pulley (52) located at the end of the lead screw (51) and connected to the synchronous belt (44), and a lead screw nut (53) located on the lead screw (51) and connected to the rotating shaft (31).

4. The fully automatic cat litter box for automatically collecting feces according to claim 3, characterized in that: The elastic element is a torsion spring (8), the bearing (7) is connected to the rotating shaft (31) through the bearing fixing seat (9), one end of the torsion spring (8) is connected to the bearing fixing seat (9), and the other end of the torsion spring (8) is connected to the lead screw nut (53).

5. The fully automatic cat litter box for automatically collecting feces according to claim 1, characterized in that: The limiting plate (6) has a guiding curved surface that guides the movement of the bearing (7) when the cat litter shovel (3) moves forward, causing the cat litter shovel (3) to flip.

6. The fully automatic cat litter box for automatically collecting feces according to claim 1, characterized in that: It also includes dustproof brushes (10) symmetrically arranged on both sides of the litter box (1), with the dustproof brushes (10) located between the channel (11) and the screw (51).

7. The fully automatic cat litter box for automatically collecting feces according to claim 1, characterized in that: The top of the collection chamber (2) is provided with an openable collection chamber cover (21).

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