A roller pressure bar structure for a cat litter box

Abstract

This utility model discloses a roller pressure rod structure for a cat litter box, including symmetrically arranged shaft grooves and a flip-up pressure rod, a locking assembly at the free end of the pressure rod, and a rotating support assembly. The shaft groove is a semi-circular groove with an open top. The pressure rod is hinged to the edge of the shaft groove opening via a shaft seat. When closed, the pressure rod and shaft groove fit together to form a circular ring that embraces the rotating shaft. When open, it allows the rotating shaft of the litter box roller to disengage. The locking assembly achieves stable locking and quick manual unlocking of the pressure rod through a hook, a seat, and a return spring. The rotating support assembly consists of the shaft groove, a roller groove on the inner side of the pressure rod, and a roller, converting sliding friction into rolling friction, reducing resistance and wear. The purpose of this utility model is to provide a solution that solves the problems of slow disassembly, difficult cleaning, and easy wear of traditional screw fixing methods, as well as the unreliable locking of existing snap-fit ​​structures, thereby achieving "one-click opening and closing" for quick disassembly, improving cleaning efficiency and user experience, and significantly enhancing the user experience.

Description

Technical Field

[0001] This utility model relates to the field of automatic cat litter box accessories, and in particular to a roller pressure bar structure for a cat litter box. Background Technology

[0002] In the field of pet cleaning equipment technology, automatic litter boxes achieve automatic sieving and circulating cleaning of cat litter through the rotation of the litter drum. As a core working component, the inner wall and surface of the litter drum are prone to residues of cat excrement, clumps of cat litter, hair, and dust. Long-term accumulation can breed bacteria and produce odors. To ensure hygiene and cleanliness, users need to frequently disassemble the drum for thorough cleaning and disinfection during use. This makes the drum's assembly and disassembly structure a key technical requirement for improving user experience.

[0003] Currently, most mainstream automatic litter boxes on the market use a traditional structure where the litter bin roller shaft is fixed with screws. This structure has significant drawbacks: disassembly requires the use of tools to loosen the fixing screws on both sides of the base one by one, which takes about 5-10 minutes. Moreover, the screws are easy to lose or strip, making it extremely unfriendly to elderly users and people with weak hand strength. During cleaning, due to insufficient structural tightness, litter particles often remain in the shaft groove, requiring repeated wiping and cleaning. The screw holes are prone to corrosion due to long-term contact with moisture, further increasing the difficulty of subsequent disassembly. More seriously, frequent disassembly and assembly can lead to thread wear, causing problems such as roller shaking and abnormal noise, directly affecting the service life of the equipment.

[0004] Although some solutions have attempted to replace screws with snap-fit ​​structures for quick release, new problems still exist in practical applications, such as poor locking reliability and rotational jamming. For example, some elastic snap-fit ​​designs lack anti-accidental activation mechanisms, making them susceptible to accidental unlocking due to external impacts during daily use; other solutions suffer from unreasonable support structure design, leading to increased rotational resistance of the shaft and affecting sand screening efficiency.

[0005] Therefore, there is an urgent need for an improved structure that combines convenient disassembly, stable locking, and low-friction rotation to overcome these shortcomings in the existing technology. Utility Model Content

[0006] The purpose of this invention is to provide a roller pressure rod structure for cat litter boxes. Through the cooperation of the flip-up pressure rod and the locking component, the litter box roller can be quickly disassembled with "one-click opening and closing". At the same time, the rotation support component optimizes the smoothness of the shaft rotation, solving the problems of "slow disassembly, difficult cleaning, and easy wear and tear" of traditional screw fixing methods.

[0007] To achieve the above objectives, the present invention adopts the following solution: a roller pressure rod structure for a cat litter box, comprising: symmetrically arranged shaft grooves, respectively fixed on the left and right sides of the cat litter box base, wherein the shaft groove is a semi-circular groove with an opening at the top, and a shaft seat is provided on one edge of the opening of the shaft groove;

[0008] A flip-up pressure bar is hinged to the opening edge of at least one of the shaft grooves via a shaft seat. When the pressure bar is flipped closed, it fits with the corresponding shaft groove to form a complete circular collar for holding the rotating shaft of the sand silo drum. When the pressure bar is flipped open, the rotating shaft of the sand silo drum can be disengaged from the shaft groove.

[0009] A locking assembly is provided at the free end of the pressure rod and on the opening side of the corresponding shaft groove, and is used to lock and fix the pressure rod to the shaft groove when the pressure rod is closed;

[0010] The rotating support components are distributed on the arc-shaped inner wall of the shaft groove and the arc-shaped inner side of the pressure rod, together forming the rotating support surface of the circular shaft ring, so that the shaft of the sand bin roller can rotate freely within the circular shaft ring.

[0011] The above solution solves the problems of time-consuming and cumbersome disassembly of traditional screw fixing methods by cooperating with the flip-up pressure rod and locking assembly, realizing the quick disassembly of the sand chamber roller with "one-click opening and closing". At the same time, the rotating support assembly converts the sliding friction of the shaft into rolling friction, solving the defects of high rotation resistance and easy jamming in traditional structures, improving the smoothness of shaft rotation and reducing component wear.

[0012] As a further embodiment of this utility model, the locking assembly includes:

[0013] A locking groove is provided at the free end of the pressure rod. The locking groove is open on one side facing the free end and top of the pressure rod, and a hook shaft is provided inside the locking groove.

[0014] The hook component is hinged in the locking groove in a rocker-like manner via the hook shaft;

[0015] A retainer is provided on one side of the shaft groove corresponding to the retaining hook;

[0016] The hook component rotates around the hook shaft and is detachably hooked together with the card seat;

[0017] An elastic element is provided in the locking groove at the tail end of the hook element to keep the hook element and the card seat engaged.

[0018] A wrench, attached to the latch, has its free end extending beyond the top opening of the locking slot for manually flipping the latch.

[0019] This solution solves the problems of poor locking reliability and easy accidental unlocking of existing snap-fit ​​structures by using a hinged hook and an elastic element. The hook is easy to operate by leveraging a wrench, while the elastic element provides a continuous locking force to ensure stable fixation after the pressure rod is closed, thus improving the reliability and ease of operation of the structure.

[0020] In a preferred embodiment of this utility model, the elastic element is a return spring with one end abutting the tail end of the hook element and the other end abutting the bottom surface of the inner cavity of the locking groove. The elastic restoring force of the spring maintains the hook element and the locking seat in an engaged state. Compared to plastic elastic elements which are prone to fatigue failure after long-term use, this method has the advantages of simple structure, low cost, and high reliability. It can stably maintain the locked state and avoid accidental unlocking due to external force collisions.

[0021] In a preferred embodiment of this utility model, when the hook component flips to the closed state with the pressure rod, the ends of the hook component that contact the mounting base are respectively provided with mutually adaptable guide slopes. This embodiment solves the problem of jamming caused by misalignment during locking by providing guide slopes at the contact ends of the hook component and the mounting base. When the pressure rod closes, the guide slopes guide the hook component to slide smoothly into the mounting base, reducing operating resistance, improving the smoothness of the locking process, and making the pressure rod closing easier and faster.

[0022] As a further embodiment of this invention, the rotating support assembly includes roller grooves respectively disposed on the arc-shaped inner wall of the shaft groove and the arc-shaped inner side of the pressure rod, with rollers hinged within the roller grooves. By providing roller grooves and hinged rollers on the inner sides of the shaft groove and the pressure rod, the sliding friction between the sand bin drum shaft and the circular collar is converted into rolling friction of the rollers, solving the problems of high shaft rotation resistance and low sand screening efficiency in traditional structures. This allows the shaft to rotate freely within the circular collar, reducing rotational energy consumption and simultaneously reducing wear between the shaft and the circular collar, thus extending the service life of the components.

[0023] As a further embodiment of this invention, a limiting platform extends rearward from the tail end of the hook component, and a limiting eave is provided at the tail end of the opening at the top of the locking groove, which covers the limiting platform to limit the rotation angle of the hook component. By setting the cooperating structure of the limiting platform and the limiting eave, the problem of locking failure or structural damage caused by excessive rotation of the hook component during flipping is solved. The limiting eave can prevent excessive movement of the limiting platform, accurately limit the rotation angle of the hook component, ensure that the hook component and the card seat are always in the correct hooking position, and improve the stability and reliability of the locking assembly.

[0024] In a preferred embodiment of this utility model, a spring mounting platform A extending upwards is provided in the locking groove, and a spring mounting platform B extending downwards is provided at the tail end of the hook component. One end of the return spring is sleeved on the spring mounting platform A, and the other end is sleeved on the spring mounting platform B. By providing spring mounting platforms in the locking groove and at the tail end of the hook component, precise positioning and a stable mounting structure are provided for the return spring, solving the problems of easy misalignment and uneven force distribution during installation. This ensures that the return spring always maintains coaxial force during operation, avoids spring twisting and deformation, enhances the stability and service life of the return spring, and thus improves the reliability of the locking assembly.

[0025] In a preferred embodiment of this utility model, the wrench has a flat plate structure, extending radially outward from the top of the latching hook and integrally formed with the latching hook. This design, with the wrench in a flat plate shape and integrally formed with the latching hook, solves the problems of insufficient structural strength and poor handling feel of traditional wrenches. The flat plate structure provides a larger operating contact area, facilitating force application by the user. Simultaneously, the integral forming process enhances the connection strength between the wrench and the latching hook, preventing breakage or detachment due to frequent operation, thus improving operational convenience and component durability.

[0026] In summary, the advantages of this utility model compared to the prior art are as follows: This utility model provides semi-circular shaft grooves with top openings on both sides of the litter box base, and hinges a flip-up pressure rod to the edge of the opening via a shaft seat. When the pressure rod is closed, it assembles with the shaft groove to form a circular collar that hugs the rotating shaft; when open, it allows the rotating shaft of the litter box roller to disengage. At the same time, a locking component is provided at the free end of the pressure rod and the corresponding shaft groove side. The locking state is maintained by the detachable hook of the hook and the seat and the elastic element. With the help of a wrench, a manual unlocking solution is achieved, which can realize the quick disassembly effect of "one-click opening and closing". The roller can be disassembled in a short time without tools. This solves the problems of traditional screw fixing methods that require tools for disassembly, and the easy loss and stripping of screws, litter residue in the shaft groove, rusting of screw holes and wear of threads, as well as the unreliable locking problem of existing buckle structures. It significantly improves cleaning efficiency and is convenient for different people to operate.

[0027] In addition, a rotating support assembly consisting of a roller groove and a hinged roller is set on the inner side of the shaft groove and the pressure rod to form a rotating support surface, which converts the sliding friction of the rotating shaft into the rolling friction of the roller, reduces the rotational resistance, improves the sand screening efficiency and reduces the wear of the components, and overcomes the defect of easy jamming in the existing technology.

[0028] In addition, the return spring in the locking assembly provides continuous locking force, and the limiting platform and limiting eave limit the rotation angle of the hook, which can effectively ensure stable and reliable locking, avoid accidental unlocking due to external force collision, and significantly improve the user experience. Attached Figure Description

[0029] Figure 1 This is a perspective view of the pressure rod of this utility model flipping and closing, locking it above the shaft groove, as well as an enlarged view of a partial area in the figure.

[0030] Figure 2 This is a perspective view of the pressure rod of this utility model in its flipped-open state, and an enlarged view of a local area in the figure.

[0031] Figure 3 This is a cross-sectional view of the pressure rod of this utility model in its flipped-open state, and an enlarged view of a local area in the figure.

[0032] Figure 4 This is a cross-sectional view of the rod in its flipped-closed state and the hook and seat in their flipped-separated state, as well as an enlarged view of a local area in the figure.

[0033] Figure 5 This is a cross-sectional view of the rod in the flipped-closed state and the hook and seat flipped together, as well as an enlarged view of a local area in the figure.

[0034] Explanation of reference numerals in the attached drawings: 1. Shaft groove; 2. Pressure rod; 3. Locking assembly; 4. Rotating support assembly; 5. Circular shaft collar; 6. Litter box roller; 10. Litter box base; 11. Shaft seat; 21. Locking groove; 22. Hook shaft; 23. Limiting edge; 31. Hook piece; 32. Seat; 33. Wrench; 34. Elastic element; 35. Guide slope; 36. Limiting platform; 41. Roller groove; 42. Roller; 61. Rotating shaft; 211. Spring mounting platform A; 311. Spring mounting platform B. Detailed Implementation

[0035] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0036] Furthermore, spatial terms may be used, such as "below," "lower," "from the inside out," "above," "upper," and similar terms. These relational terms are used to facilitate the description of the relationship between some elements or features in the drawings and other elements or features. These spatial relational terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be rotated 90 degrees or otherwise to different orientations, and the spatially related adjectives used therein can be interpreted in the same way. Therefore, they should not be construed as limiting the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 5 The illustrated roller pressure rod structure for a litter box includes axial grooves 1 symmetrically arranged on the left and right sides of a litter box base 10, a flip-up pressure rod 2 that engages with the axial grooves 1, and a locking assembly 3 located at the locking end of the pressure rod 2. The axial grooves 1 are semi-circular grooves with an open top, respectively fixed to the top ends of the left and right side walls of the litter box base 10. A bearing seat 11 with a semi-circular protrusion and double ears is provided on one edge of the opening of the axial groove 1. In a preferred embodiment, pressure rods 2 can be provided on the openings of the axial grooves 1 on both sides of the litter box base 10 to achieve symmetrical locking. In this embodiment, the pressure rod 2 is hinged to the edge of the opening of one of the axial grooves 1 via the bearing seat 11. When the pressure rod 2 flips down and closes around the shaft seat 11, its arc-shaped inner side and the semi-circular groove of the shaft groove 1 are combined to form a complete circular shaft ring 5, which is used to tightly hold the rotating shaft 61 of the sand bin roller 6. When the pressure rod 2 flips up and opens, the top opening of the shaft groove 1 is exposed, allowing the rotating shaft 61 of the sand bin roller 6 to disengage from the shaft groove 1, so as to quickly disassemble the sand bin roller 6 for cleaning.

[0038] To address the cumbersome operation of traditional screw-fixed sand chamber roller shafts and the unreliable locking of existing snap-fit ​​structures, and to ensure stable fixation and quick unlocking of the pressure rod 2 after closure, a locking groove 21 is provided at the free end (non-hinged end) of the pressure rod 2. The locking groove 21 is open on one side facing the free end and top of the pressure rod 2, and a hook shaft 22 is provided inside it. The locking assembly 3 is located in the locking groove 21 and on the open side of the corresponding shaft groove 1, specifically including a hook 31, a seat 32, an elastic element 34, and a wrench 33. The hook 31 is hinged to the locking groove 21 in a rocker-like manner via the hook shaft 22. The seat 32 is located on one side of the shaft groove 1 corresponding to the hook 31. As can be clearly seen from the figure, the hook 31 and the seat 32 form a hook shape that can be detachably fixed by a reverse hook engagement structure. The hook 31 can rotate around the hook shaft 22 and is detachably hooked together with the seat 32. When the hook 31 is flipped to the closed state with the pressure rod 2, in order to guide the hook 31 to slide smoothly into the card seat 32 and reduce operating resistance, the ends of the hook 31 and the card seat 32 that are in contact with each other are respectively provided with mutually adaptable guide slopes 35. When the pressure rod 2 is flipped to close, the guide slopes 35 can guide the hook 31 to slide smoothly into the hook position of the card seat 32 after passing over the barb of the card seat 32. The elastic element 34 is a return spring, which is set in the locking groove 21 at the tail end of the hook 31. One end of the spring is sleeved on the spring mounting platform B311 extending downward from the tail end of the hook 31 and abuts against the tail end of the hook 31. The other end is sleeved on the spring mounting platform A211 extending upward from the locking groove 21 and abuts against the bottom surface of the inner cavity of the locking groove 21, so as to maintain the hook 31 and the card seat 32 in a mutually hooked state. Since the tail end of the hook 31 is pressed by the return spring, and the hook 31 can flip in a rocker-like manner, in order to prevent the hook 31 from over-flipping before it is engaged with the card seat 32, which would prevent the hook 31 from sliding smoothly into the engagement position of the card seat 32 through the guide slope 35 when the pressure rod 2 flips and closes, a limiting platform 36 extends backward from the tail end of the hook 31. A limiting eave 23 is provided at the tail end of the top opening of the locking groove 21 to cover the limiting platform 36, which is used to limit the rotation angle of the hook 31. The limiting eave 23 can prevent the limiting platform 36 from over-flipping and moving, and accurately limit the rotation angle of the hook 31. The wrench 33 is connected to the hook piece 31. It has a flat structure and extends outward from the top of the hook piece 31 along the radial direction of the hook shaft 22. It is integrally formed with the hook piece 31. Its free section extends out of the top opening of the locking groove 21, which makes it convenient for the user to manually flip the hook piece 31 to unlock the clamping shape of the pressure rod 2 and the shaft groove 1, and to facilitate the disassembly and release of the rotating shaft 61 of the bin roller 6 from the shaft groove 1.

[0039] In addition, such as Figures 1 to 5As shown, to solve the problems of high rotational resistance, easy jamming and wear caused by sliding friction of the rotating shaft in traditional structures, and to improve the smoothness of shaft rotation and extend the service life of components, a rotational support assembly 4 is provided on the arc-shaped inner wall of the shaft groove 1 and the arc-shaped inner side of the pressure rod 2, which together form the rotational support surface of the circular shaft ring 5. The rotational support assembly 4 includes roller grooves 41 respectively set on the arc-shaped inner wall of the shaft groove 1 and the arc-shaped inner side of the pressure rod 2. A roller 42 is hinged in the roller groove 41, which converts the sliding friction between the rotating shaft 61 of the sand chamber drum 6 and the circular shaft ring 5 into the rolling friction of the roller, so that the rotating shaft of the sand chamber drum can rotate freely in the circular shaft ring 5, reducing jamming and wear.

[0040] The working principle of this utility model is as follows:

[0041] Installation and locking process: When installing the litter box roller 6, first align the rotating shaft 61 of the litter box roller 6 with the top opening of the shaft groove 1 on both sides of the litter box base 10, so that the rotating shaft 61 falls into the semi-circular groove of the shaft groove 1. Then manually flip the flip-down pressure rod 2 downwards. The pressure rod 2 rotates around the shaft seat 11, and its arc-shaped inner side gradually approaches the groove of the shaft groove 1 until the two are joined to form a complete circular shaft ring 5, which tightly hugs the rotating shaft 61. At this time, the locking assembly 3 at the free end of the pressure rod 2 begins to operate: the hook 31 moves down with the pressure rod 2 to contact the seat 32 on one side of the shaft groove 1, and the guide slopes 35 at the ends of the two interact with each other, guiding the hook 31 to rotate around the hook shaft 22 and slide into the seat 32 and hook together; at the same time, the elastic element 34 (reset spring) is compressed to generate elastic force, pushing the tail end of the hook 31, so that the hook 31 and the seat 32 are firmly hooked together, thereby locking the pressure rod 2 in the closed state, ensuring that the circular shaft ring 5 stably clamps the rotating shaft 61, and preventing the sand chamber roller 6 from loosening or shaking.

[0042] Rotational support during use: When the sand bin roller 6 needs to rotate, such as for cleaning or agitating cat litter, the rotating shaft 61 rotates within the circular collar 5. At this time, the rotational support assembly 4, located on the arc-shaped inner wall of the shaft groove 1 and the arc-shaped inner side of the pressure rod 2, comes into play: the roller 42 in the roller groove 41 contacts the roller groove track on the surface of the rotating shaft 61, converting traditional sliding friction into rolling friction. Since the roller 42 is hinged within the roller groove 41 and can rotate freely, the rotational resistance of the rotating shaft 61 is greatly reduced, making the sand bin roller 6 rotate more smoothly without jumping, while also reducing wear between components and extending the service life of the equipment.

[0043] Unlocking and disassembly process: When it is necessary to disassemble the sand chamber roller 6, manually pull the wrench 33 upward. The wrench 33 drives the hook part 31 to rotate around the hook shaft 22, overcoming the elastic force of the elastic element 34, so that the hook part 31 separates from the seat 32. After unlocking, flip the pressure rod 2 upward, so that it rotates around the shaft seat 11 and opens, and the top opening of the shaft groove 1 is exposed again. At this time, the rotating shaft 61 can be directly removed from the shaft groove 1, completing the quick disassembly of the sand chamber roller 6. The whole process does not require tools and is convenient and efficient.

[0044] The above working principle, through the coordinated operation of various components, not only achieves the rapid installation and stable locking of the litter box roller 6, but also solves the problems of cumbersome operation, unreliable locking and high rotational resistance in traditional structures, significantly improving the convenience and reliability of the cat litter box.

[0045] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A roller pressure bar structure for a cat litter box, characterized in that, include: Symmetrically arranged shaft grooves (1) are fixed on the left and right sides of the cat litter box base respectively. The shaft groove (1) is a semi-circular groove with an opening at the top. A shaft seat (11) is provided on one side of the opening of the shaft groove (1). A flip-up pressure bar (2) is hinged to the opening edge of at least one of the shaft grooves (1) via a shaft seat (11). When the pressure bar (2) is flipped closed, it is joined with the corresponding shaft groove (1) to form a complete circular collar (5) for holding the rotating shaft of the sand bin drum. When the pressure bar (2) is flipped open, the rotating shaft of the sand bin drum can be disengaged from the shaft groove (1). The locking assembly (3) is located at the free end of the pressure rod (2) and on the opening side of the corresponding shaft groove (1), and is used to lock the pressure rod (2) onto the shaft groove (1) when the pressure rod (2) is closed. The rotating support assembly (4) is distributed on the arc-shaped inner wall of the shaft groove (1) and the arc-shaped inner side of the pressure rod (2), together forming the rotating support surface of the circular shaft ring (5), so that the shaft of the sand bin roller can rotate freely in the circular shaft ring (5).

2. The roller pressure bar structure for a cat litter box according to claim 1, characterized in that, The locking assembly (3) includes: The locking groove (21) is provided at the free end of the pressure rod (2). The locking groove (21) is open on the side facing the free end and top of the pressure rod (2). A hook shaft (22) is provided inside the locking groove (21). The hook component (31) is hinged in the locking groove (21) in a rocker-like manner via the hook shaft (22); The card holder (32) is disposed on one side of the shaft groove (1) corresponding to the card hook (31); The hook member (31) rotates around the hook shaft (22) and is detachably hooked together with the card seat (32); An elastic element (34) is provided in the locking groove (21) at the tail end of the hook element (31) to keep the hook element (31) and the card seat (32) hooked together; A wrench (33) is attached to the hook (31), with the free section of the wrench (31) extending out of the top opening of the locking groove (21) for manually flipping the hook (31).

3. The roller pressure bar structure for a cat litter box according to claim 2, characterized in that, The elastic element (34) is a return spring with one end abutting the tail end of the hook element (31) and the other end abutting the bottom surface of the inner cavity of the locking groove (21).

4. The roller pressure bar structure for a cat litter box according to claim 2, characterized in that, When the hook (31) is flipped to the closed state with the pressure rod (2), the ends of the hook (31) that are in contact with the card seat (32) are respectively provided with guide slopes (35) that can be adapted to each other.

5. The roller pressure bar structure for a cat litter box according to claim 1, characterized in that, The rotating support assembly (4) includes roller grooves (41) respectively disposed on the arc-shaped inner wall of the shaft groove (1) and the arc-shaped inner side of the pressure rod (2), and a roller (42) is hinged in the roller groove (41).

6. The roller pressure bar structure for a cat litter box according to claim 3, characterized in that, A limiting platform (36) extends rearward from the tail end of the hook (31), and a limiting eave (23) is provided at the tail end of the top opening of the locking groove (21) to cover the limiting platform (36) and limit the rotation angle of the hook (31).

7. The roller pressure bar structure for a cat litter box according to claim 3, characterized in that, The locking groove (21) is provided with an upwardly extending spring mounting platform A (211), and the hook (31) is provided with a downwardly extending spring mounting platform B (311) at the tail end. One end of the reset spring is sleeved on the spring mounting platform A (211), and the other end is sleeved on the spring mounting platform B (311).

8. A roller pressure bar structure for a cat litter box according to claim 2, characterized in that, The wrench (33) has a flat structure, extending radially outward from the top of the hook (31) along the shaft (22), and is integrally formed with the hook (31).

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