Cat litter machine

Abstract

A cat litter machine, comprising a machine body and a drum (100) rotatably arranged on the machine body, wherein the drum (100) has an accommodation cavity (111), and an opening (112) in communication with the accommodation cavity (111) is formed in a side wall of the drum (100), the open angle of the opening (112) being α in the direction perpendicular to the axis of rotation of the drum (100), and the open angle of the opening (112) being β in the direction of the axis of rotation of the drum (100), satisfying 70°≤α≤120° and 70°≤β≤120°.

Description

Cat litter machine

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 12, 2023, with application number 202323392308.9 and invention name “A Cat Litter Machine”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of pet products, and in particular to a cat litter machine. Background Art

[0003] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art.

[0004] Automatic cat litter machines are particularly convenient devices for cat owners to clean cat litter and feces. You only need to click the cleaning button to complete the cleaning, open the door at the opening of the drum to take out the cat litter and feces, making cat raising cleaner and more convenient.

[0005] In the related art, the drum of the cat litter machine is provided with an opening on one side in the direction of its rotation axis (i.e., the end of the drum). Due to the limitation of the drum end structure, the size of the opening is limited and the field of view is narrow, which makes it inconvenient for users to add cat litter and for pets to enter and exit the drum. Technical issues

[0006] In view of this, the purpose of this application is to provide a cat litter machine, which aims to solve the technical problems in the prior art such as limited opening size, narrow field of view, inconvenience for users to add cat litter and inconvenience for pets to enter and exit the drum. Technical Solutions

[0007] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0008] An embodiment of the present application provides a cat litter machine, comprising:

[0009] body;

[0010] A drum is rotatably mounted on the machine body, the drum having a receiving cavity, and a side wall of the drum having an opening communicating with the receiving cavity;

[0011] In the direction perpendicular to the rotation axis of the drum, the opening angle of the opening is α, and in the direction of the rotation axis of the drum, the opening angle of the opening is β, satisfying: 70°≤α≤120°, 70°≤β≤120°.

[0012] In one embodiment, a flange is provided along the circumference of the opening, the flange is smoothly connected to the edge of the opening, and the flange extends in a direction close to the accommodating cavity.

[0013] In one embodiment, a plurality of first reinforcing ribs are arranged at intervals along the circumference of the opening, and each of the first reinforcing ribs is connected between the flange and the cavity wall of the accommodating cavity.

[0014] In one embodiment, the flange includes a first flange portion and a second flange portion for pets to step on, the first flange portion is a U-shaped structure, the first flange portion is smoothly connected to the second flange portion, and the distance the second flange portion extends toward the accommodating cavity is greater than the distance the first flange portion extends toward the accommodating cavity.

[0015] In one embodiment, the distance L1 that the first flange portion extends in a direction close to the accommodating cavity satisfies: 8 mm ≤ L1 ≤ 18 mm.

[0016] In one embodiment, the distance L2 that the second flange portion extends in a direction close to the accommodating cavity satisfies: 25 mm ≤ L2 ≤ 50 mm.

[0017] In one embodiment, the edge of the opening includes a first edge portion, a second edge portion, a third edge portion and a fourth edge portion, the first edge portion is arranged opposite to the second edge portion, the third edge portion is arranged opposite to the fourth edge portion, and the third edge portion is smoothly connected between the first edge portion and the second edge portion, and the fourth edge portion is smoothly connected between the first edge portion and the second edge portion.

[0018] In one embodiment, the third edge portion and the fourth edge portion are both arched in a direction away from the accommodating cavity.

[0019] In one embodiment, the first edge portion, the portion of the third edge portion away from the second edge portion, and the portion of the fourth edge portion away from the second edge portion together form a U-shaped structure; and / or

[0020] The second edge portion, a portion of the third edge portion away from the first edge portion, and a portion of the fourth edge portion away from the first edge portion together form a U-shaped structure.

[0021] In one embodiment, a second reinforcing rib is provided along the circumference of the opening, the second reinforcing rib is smoothly connected to the edge of the opening, and extends in a direction away from the accommodating cavity. Beneficial effects

[0022] The beneficial effects of this application are:

[0023] The present application provides a cat litter machine, comprising a body and a drum. By providing an opening in the side wall of the drum, the side wall of the drum has sufficient area for arranging the opening. On this basis, the opening angle α of the opening in a direction perpendicular to the rotation axis of the drum is within a range of 70° to 120°, and the opening angle β of the opening in the direction of the rotation axis of the drum is within a range of 70° to 120°. In this way, the opening has a larger space relative to the accommodating cavity, making it more convenient for pets to enter and exit the drum, providing a wider field of view, and making it easier for users to add cat litter, thereby improving the market competitiveness of the product.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] FIG1 is a schematic structural diagram of a drum from a first perspective in some embodiments of the present application;

[0027] FIG2 is a schematic structural diagram of a drum from a second perspective in some embodiments of the present application;

[0028] FIG3 shows a schematic structural diagram of a drum from a third perspective in some embodiments of the present application;

[0029] FIG4 shows a schematic structural diagram of a drum from a fourth perspective in some embodiments of the present application;

[0030] FIG5 is a schematic structural diagram of a drum from a fifth perspective in some embodiments of the present application;

[0031] FIG6 shows a schematic structural diagram of part A in FIG5 .

[0032] Explanation of the main component symbols: 100-roller; 110-cylinder; 111-accommodating chamber; 112-opening; 1121-first edge portion; 1122-second edge portion; 1123-third edge portion; 1124-fourth edge portion; 113-flanged portion; 1131-first flanged portion; 1132-second flanged portion; 114-first reinforcing rib; 115-second reinforcing rib; 120-rotating part; 121-toothed portion; 122-toothless portion; H-rotation axis. Modes for Carrying Out the Invention

[0033] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0036] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0037] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] An embodiment of the present application provides a cat litter machine, which relates to the technical field of pet supplies. As shown in FIG. 1 to FIG. 3 , the cat litter machine includes a body and a drum 100 .

[0039] The drum 100 is rotatably mounted on the housing and has a chamber 111 for storing cat litter and providing a space for pets to move around. A sidewall of the drum 100 defines an opening 112 communicating with the chamber 111. The opening angle of the opening 112 is α in a direction perpendicular to the rotation axis H of the drum 100, and β in the direction of the rotation axis H of the drum 100, satisfying the following conditions: 70° ≤ α ≤ 120°, and 70° ≤ β ≤ 120°.

[0040] It should be noted that, as shown in FIG2 , two auxiliary lines are drawn in a direction perpendicular to the rotation axis H of the drum 100, passing through the center of the drum 100 and the two ends of the opening 112. The angle between the two auxiliary lines is the opening angle α of the opening 112. As shown in FIG3 , two auxiliary lines are drawn in a direction perpendicular to the rotation axis H of the drum 100, passing through the center of the drum 100 and the two ends of the opening 112. The angle between the two auxiliary lines is the opening angle β of the opening 112.

[0041] For example, the opening angle α can be selected from 70°, 72°, 75°, 75.5°, 78°, 80°, 84°, 90°, 98°, 100°, 110°, 115°, 120°, etc. The opening angle β can be selected from 70°, 72°, 75°, 75.5°, 78°, 80°, 83°, 83.5°, 84°, 90°, 98°, 100°, 110°, 115°, 120°, etc.

[0042] In the related art, the drum of the cat litter machine is provided with an opening on one side in the direction of its rotation axis (i.e., the end of the drum). Due to the limitation of the drum end structure, the size of the opening is limited and the field of view is narrow, which makes it inconvenient for users to add cat litter and for pets to enter and exit the drum.

[0043] It can be understood that the cat litter machine provided in this embodiment, by opening the opening 112 on the side wall of the drum 100, the side wall of the drum 100 has sufficient area to arrange the opening 112. On this basis, the opening angle α of the opening 112 in the direction perpendicular to the rotation axis H of the drum 100 is within the range of 70° to 120°, and the opening angle β of the opening 112 in the direction of the rotation axis H of the drum 100 is within the range of 70° to 120°. In this way, the opening 112 has a larger space relative to the accommodating cavity 111, which makes it more convenient for pets to enter and exit the drum 100, and for users to add cat litter, and the field of view is also wider, thereby improving the market competitiveness of the product.

[0044] As shown in FIG. 1 , in one embodiment, a flange 113 is provided along the circumference of the opening 112 . The flange 113 is smoothly connected to the edge of the opening 112 , and the flange 113 extends toward the accommodating cavity 111 .

[0045] In this embodiment, flanges 113 are provided along the circumference of opening 112, smoothly connecting to the edge of opening 112 and extending toward accommodating cavity 111. Thus, when the edge of opening 112 tends to deform, flanges 113, due to their high structural strength and ability to maintain their original shape, can exert a fixed stress on the edge of opening 112 to counteract the deformation stress generated by the edge of opening 112, thereby limiting deformation of the edge of opening 112 and effectively improving the structural stability of drum 100. Furthermore, flanges 113 are housed within accommodating cavity 111, giving drum 100 a more rounded and aesthetically pleasing appearance, enhancing the product's market competitiveness.

[0046] As shown in FIG. 5 and FIG. 6 , further, a plurality of first reinforcing ribs 114 are provided at intervals along the circumference of the opening 112 , and each first reinforcing rib 114 is connected between the flange 113 and the cavity wall of the accommodating cavity 111 .

[0047] For example, the number of the first reinforcing ribs 114 can be two, three, four, five, etc., and can be set according to design requirements.

[0048] In this embodiment, a plurality of first reinforcing ribs 114 are arranged at circumferential intervals along the opening 112. Since the first reinforcing ribs 114 have high structural strength, when the flange 113 tends to deform, the first reinforcing ribs 114 can apply a fixed stress to the flange 113 to counteract the deformation stress generated by the deformation of the flange 113, thereby limiting the deformation of the flange 113 and further improving the structural stability of the drum 100.

[0049] As shown in Figures 1 and 4, further, the flange 113 includes a first flange portion 1131 and a second flange portion 1132 for pets to step on. The first flange portion 1131 is a U-shaped structure. The first flange portion 1131 is smoothly connected to the second flange portion 1132. The distance that the second flange portion 1132 extends toward the direction close to the accommodating cavity 111 is greater than the distance that the first flange portion 1131 extends toward the direction close to the accommodating cavity 111.

[0050] In this embodiment, by configuring the first flange portion 1131 into a U-shaped structure and smoothly connecting the first flange portion 1131 with the second flange portion 1132, the flange portion 113 has a more rounded and aesthetically pleasing appearance. Furthermore, by ensuring that the second flange portion 1132 extends farther toward the accommodating cavity 111 than the first flange portion 1131, it is easier for pets to enter and exit the drum 100 by stepping on the second flange portion 1132.

[0051] As shown in FIG. 4 , further, the distance L1 that the first flange portion 1131 extends in a direction close to the accommodating cavity 111 satisfies the following condition: 8 mm ≤ L1 ≤ 18 mm.

[0052] For example, L1 can be 8 mm, 8.2 mm, 8.5 mm, 9 mm, 9.6 mm, 10 mm, 10.2 mm, 10.5 mm, 11 mm, 12 mm, 14 mm, 16 mm, 17 mm, 18 mm, etc. When the first flange portion 1131 is a sheet-like structure, L1 refers to the width of the first flange portion 1131 .

[0053] It should be noted that if L1 is too small, it will be inconvenient for the pet's feet to step on it, and the first flange portion 1131 will not effectively reinforce the edge of the opening 112. If L1 is too large, it will result in material waste, increasing manufacturing costs, and the first flange portion 1131 will occupy too much space in the accommodating cavity 111, indirectly reducing the capacity of the accommodating cavity 111.

[0054] In this embodiment, the distance L1 that the first flange portion 1131 extends toward the accommodating cavity 111 is controlled within the range of 8 mm to 18 mm to accommodate the pet's foot size, making it convenient for the pet to step on the first flange portion 1131 to enter and exit the drum 100. At the same time, the space occupied by the first flange portion 1131 in the accommodating cavity 111 is reduced.

[0055] 4 , further, the distance L2 that the second flange portion 1132 extends toward the accommodating cavity 111 satisfies the following relationship: 25 mm ≤ L2 ≤ 50 mm.

[0056] For example, L2 can be 25 mm, 26 mm, 28 mm, 29.5 mm, 30 mm, 30.5 mm, 31 mm, 35 mm, 40 mm, 42 mm, 45 mm, 49 mm, 50 mm, etc. When the second flange portion 1132 is a sheet-like structure, L2 refers to the width of the second flange portion 1132 .

[0057] It should be noted that if L2 is too small, the second flange portion 1132 will not sufficiently reinforce the edge of the opening 112. If L1 is too large, it will cause material waste, increase manufacturing costs, and the second flange portion 1132 will occupy too much space in the accommodating cavity 111, indirectly reducing the capacity of the accommodating cavity 111.

[0058] In this embodiment, by controlling the distance L2 that the second flange portion 1132 extends in the direction close to the accommodating cavity 111 to be within the range of 25 mm to 50 mm, not only can the edge of the opening 112 be sufficiently reinforced, but the space occupied by the second flange portion 1132 in the accommodating cavity 111 is also reduced, thereby increasing the actual capacity of the accommodating cavity 111.

[0059] In another embodiment, the flange 113 includes a plurality of flange portions, which are arranged at intervals along the circumference of the opening 112. Each flange portion is smoothly connected to the edge of the opening 112, and can also reinforce the edge of the opening 112 to enhance the structural strength and stability of the drum 100.

[0060] As shown in Figure 1, in one embodiment, the edge of the opening 112 includes a first edge portion 1121, a second edge portion 1122, a third edge portion 1123 and a fourth edge portion 1124, the first edge portion 1121 and the second edge portion 1122 are arranged opposite to each other, the third edge portion 1123 and the fourth edge portion 1124 are arranged opposite to each other, and the third edge portion 1123 is smoothly connected between the first edge portion 1121 and the second edge portion 1122, and the fourth edge portion 1124 is smoothly connected between the first edge portion 1121 and the second edge portion 1122.

[0061] In this embodiment, by smoothly connecting the first edge portion 1121, the third edge portion 1123, the second edge portion 1122 and the fourth edge portion 1124 in sequence to form a rounded and approximately square opening 112, it is not only convenient for pets to enter and exit the drum 100 and for users to add cat litter, but also has a higher aesthetic value, thereby improving the ornamental value of the cat litter machine.

[0062] As shown in FIG5 , the third edge portion 1123 and the fourth edge portion 1124 are both arched away from the accommodating cavity 111. This not only increases the actual capacity of the accommodating cavity 111, but also gives the edge of the opening 112 an undulating appearance, thereby enhancing the aesthetics of the cat litter machine.

[0063] Of course, for the above embodiment, the first edge portion 1121 and the second edge portion 1122 may both be arched in a direction away from the accommodating cavity 111 .

[0064] As shown in Figure 1, further, the first edge portion 1121, the portion of the third edge portion 1123 away from the second edge portion 1122, and the portion of the fourth edge portion 1124 away from the second edge portion 1122 are combined to form a U-shaped structure; and / or the second edge portion 1122, the portion of the third edge portion 1123 away from the first edge portion 1121, and the portion of the fourth edge portion 1124 away from the first edge portion 1121 are combined to form a U-shaped structure.

[0065] Exemplarily, the first edge portion 1121, the portion of the third edge portion 1123 away from the second edge portion 1122, and the portion of the fourth edge portion 1124 away from the second edge portion 1122 form a U-shaped structure, and the second edge portion 1122, the portion of the third edge portion 1123 away from the first edge portion 1121, and the portion of the fourth edge portion 1124 away from the first edge portion 1121 form a U-shaped structure. In this way, the two U-shaped structures form a rounded runway-shaped opening 112 edge, which not only makes it convenient for pets to enter and exit the drum 100 and for users to add cat litter, but also has higher aesthetics, thereby improving the ornamental value of the cat litter machine.

[0066] Of course, the first edge portion 1121, the third edge portion 1123, the portion away from the second edge portion 1122, and the portion of the fourth edge portion 1124 away from the second edge portion 1122 may be combined to form a U-shaped structure, while the second edge portion 1122, the third edge portion 1123, the portion away from the first edge portion 1121, and the portion of the fourth edge portion 1124 away from the first edge portion 1121 may be combined to form a V-shaped structure or a C-shaped structure.

[0067] In addition, the second edge portion 1122, the third edge portion 1123, the portion away from the first edge portion 1121, and the portion of the fourth edge portion 1124 away from the first edge portion 1121 can be combined to form a U-shaped structure, while the first edge portion 1121, the third edge portion 1123, the portion away from the second edge portion 1122, and the portion of the fourth edge portion 1124 away from the second edge portion 1122 can be combined to form a V-shaped structure or a C-shaped structure.

[0068] In another embodiment, the edge of the opening 112 may also be a triangular structure, a hexagonal structure, an elliptical structure, a circular structure, etc., and the shape of the edge of the opening 112 is not specifically limited here.

[0069] As shown in FIG. 1 , in one embodiment, a second reinforcing rib 115 is provided along the circumference of the opening 112 . The second reinforcing rib 115 is smoothly connected to the edge of the opening 112 and extends in a direction away from the accommodating cavity 111 .

[0070] In this embodiment, a second reinforcing rib 115 is provided along the circumference of the opening 112, the second reinforcing rib 115 is smoothly connected to the edge of the opening 112, and is extended in a direction away from the accommodating cavity 111. In this way, when the edge of the opening 112 tends to deform, since the second reinforcing rib 115 has a high structural strength and can maintain its original shape, it can apply a fixed stress to the edge of the opening 112 to counteract the deformation stress generated by the edge of the opening 112, thereby limiting the deformation of the edge of the opening 112 and effectively improving the structural stability of the drum 100.

[0071] It should be noted that the flange 113 and the second reinforcing rib 115 can be set at the same time, the flange 113 is located on the side of the edge of the opening 112 close to the accommodating cavity 111, and the second reinforcing rib 115 is located on the side of the edge of the opening 112 away from the accommodating cavity 111, and the shapes of the flange 113 and the second reinforcing rib 115 are adapted to the edge shape of the opening 112. For example, when the edge of the opening 112 is an O-shaped structure, a D-shaped structure, a runway-shaped structure, a square structure, or a rectangular structure, the flange 113 and the second reinforcing rib 115 both correspond to an O-shaped structure, a D-shaped structure, a runway-shaped structure, a square structure, or a rectangular structure.

[0072] As shown in Figures 1, 4 and 5, in one embodiment, the drum 100 includes a cylinder 110 and a rotating member 120. An opening 112 is provided on the side wall of the cylinder 110. The rotating member 120 includes a main body, a toothed portion 121 and a toothless portion 122. The toothed portion 121 and the toothless portion 122 are arranged along the circumference of the main body. The main body is connected to the cylinder 110 to form a accommodating cavity 111. The toothed portion 121 is engaged with a driving gear of the body. The driving gear is used to drive the rotating member 120 to rotate, thereby driving the drum 100 to rotate around its rotation axis H.

[0073] Exemplarily, the driving gear is driven by a driving member of the machine body, such as a rotating motor or a driving motor. Of course, a reduction mechanism, such as a gear reduction mechanism or a worm gear reduction mechanism, can be added between the driving gear and the driving member to achieve the effect of "deceleration and torque increase" to increase the output torque of the driving gear so that the drum 100 has sufficient power to rotate.

[0074] In this embodiment, a rotating part 120 having a toothless portion 122 and a toothed portion 121 is provided, and the toothed portion 121 is engaged with the driving gear of the body to enable the driving gear to transmit the torque to the drum 100. The toothless portion 122 can limit the rotation of the drum 100 to limit the rotation angle range of the drum 100, for example, limiting the rotation angle of the drum 100 to between 90° and 270°, so that the drum 100 can screen clumped cat litter and pet feces.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A cat litter machine, characterized in that: include: Body; A drum is rotatably disposed on the machine body, the drum has a receiving cavity, and a side wall of the drum is provided with an opening communicating with the receiving cavity; In the direction perpendicular to the rotation axis of the drum, the opening angle of the opening is α, and in the direction of the rotation axis of the drum, the opening angle of the opening is β, satisfying: 70°≤α≤120°, 70°≤β≤120°.

2. The cat litter machine according to claim 1, characterized in that: A flange is arranged along the circumference of the opening, the flange is smoothly connected to the edge of the opening, and the flange is extended in a direction close to the accommodating cavity.

3. The cat litter machine according to claim 2, characterized in that: A plurality of first reinforcing ribs are arranged at intervals along the circumference of the opening, and each of the first reinforcing ribs is connected between the flange and the cavity wall of the accommodating cavity.

4. The cat litter machine according to claim 2, characterized in that: The flange includes a first flange portion and a second flange portion for pets to step on, the first flange portion is a U-shaped structure, the first flange portion is smoothly connected to the second flange portion, and the distance the second flange portion extends toward the accommodating cavity is greater than the distance the first flange portion extends toward the accommodating cavity.

5. The cat litter machine according to claim 4, characterized in that: The distance that the first flange portion extends toward the accommodating cavity is L1, which satisfies: 8mm≤L1≤18mm.

6. The cat litter machine according to claim 4, characterized in that: The distance that the second flange portion extends in the direction approaching the accommodating cavity is L2, which satisfies: 25mm≤L2≤50mm.

7. The cat litter machine according to any one of claims 1 to 6, characterized in that: The open edge includes a first edge portion, a second edge portion, a third edge portion and a fourth edge portion, the first edge portion is arranged opposite to the second edge portion, the third edge portion is arranged opposite to the fourth edge portion, and the third edge portion is smoothly connected between the first edge portion and the second edge portion, and the fourth edge portion is smoothly connected between the first edge portion and the second edge portion.

8. The cat litter machine according to claim 7, characterized in that: The third edge portion and the fourth edge portion are both arched in a direction away from the accommodating cavity.

9. The cat litter machine according to claim 7, characterized in that: The first edge portion, the portion of the third edge portion away from the second edge portion, and the portion of the fourth edge portion away from the second edge portion together form a U-shaped structure; and / or The second edge portion, a portion of the third edge portion away from the first edge portion, and a portion of the fourth edge portion away from the first edge portion together form a U-shaped structure.

10. The cat litter machine according to any one of claims 1 to 6, characterized in that: A second reinforcing rib is arranged along the circumference of the opening, the second reinforcing rib is smoothly connected to the edge of the opening, and extends in a direction away from the accommodating cavity.

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