Closed cat litter basin

Abstract

The utility model relates to the technical field of cat litter basins, in particular to a closed cat litter basin. A closed cat litter basin comprises an upper shell and a lower shell which are detachably fixed to each other, notches are formed in the wall body of the upper shell and the wall body of the lower shell, the two notches form an inlet and outlet allowing a cat to go in and out, the upper shell and the lower shell are arranged in a mutual opening mode, and a cavity is defined by the upper shell and the lower shell; the size of an opening of the upper shell is gradually increased from top to bottom, the size of an opening of the lower shell is gradually increased from bottom to top, and the upper shell and the lower shell are symmetrically arranged in the vertical direction; after the upper shell body is turned over by 180 degrees, the upper shell body and the lower shell body can be arranged in a stacked mode. The cat litter box has the advantages that the cat litter box can be conveniently stacked and transported, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cat litter boxes, in particular to a closed cat litter box. Background Art

[0002] Currently available closed cat litter boxes are large in size and difficult to stack and transport, and the upper and lower shells have different shapes and sizes, requiring two sets of molds for production, resulting in high production and processing costs.

[0003] For example, Chinese patent application number 201820283576.7 discloses a closed cat litter box including a bottom basin and a box cover. The box cover is provided with an entrance for cats to enter and exit. The box cover and the bottom basin are detachably connected. The box cover is arranged above the bottom basin. The box cover includes a front movable cover and a rear fixed cover. The front movable cover and the rear fixed cover are hinged. The rear fixed cover is provided with air holes. Hooks are provided on both sides of the rear fixed cover, and slots are provided on both sides of the bottom basin. The hooks and the slots are buckled together.

[0004] The above-mentioned closed cat litter box is divided into a box cover (upper shell) and a bottom basin (lower shell). The volume of the box cover is completely larger than the bottom basin, so the two are difficult to be stacked on each other during stacking and transportation, which takes up a large space and requires two sets of molds for production, which is more troublesome. Summary of the Invention

[0005] In order to solve the deficiencies in the prior art, the utility model provides a closed cat litter box which can facilitate the stacking and transportation of cat litter boxes and can reduce the production cost.

[0006] The utility model is implemented by the following technical solutions: a closed cat litter box, comprising an upper shell and a lower shell that are detachably fixed to each other, the walls of the upper shell and the lower shell are both provided with notches, the two notches forming an entrance and exit for cats to enter and exit, the upper shell and the lower shell are open to each other and enclose a cavity between them; the opening size of the upper shell gradually increases from top to bottom, and the opening size of the lower shell gradually increases from bottom to top, and the upper shell and the lower shell are symmetrically arranged in the upper and lower directions; when the upper shell is flipped 180 degrees, it can be stacked with the lower shell.

[0007] During transportation or stacking, the upper shell can be rotated 180° and stacked with the lower shell, thereby reducing space and facilitating the stacking and transportation of cat litter boxes. When a closed cat litter box needs to be assembled, the openings of the upper shell and the lower shell can be placed opposite each other to achieve assembly of the upper shell and the lower shell.

[0008] The upper and lower shells can be detachably fixed in any of the existing detachable fixing methods, such as screw fixing, snap fixing, plug fixing, etc.

[0009] The opening size of the upper shell gradually increases from top to bottom, so that the upper shell is open. The same is true for the lower shell. The upper and lower shells are symmetrically arranged along the vertical direction, so the upper and lower shells can be nested and stacked together.

[0010] The upper and lower shells may be in the shape of a truncated cone or a prism.

[0011] The symmetrical arrangement of the upper and lower shells allows the upper and lower shells to have the same shape and size, so a set of molds can be used to demould the upper and lower shells.

[0012] The symmetry in the upper and lower symmetric setting may be mirror symmetry or rotational symmetry (central symmetry).

[0013] In summary, the upper and lower shells of the closed cat litter of this solution are symmetrically arranged in the up and down directions, so that they can be stacked together to reduce the volume, thereby facilitating stacking and transportation. At the same time, a set of molds can be used to process the upper and lower shells, thereby reducing production costs.

[0014] Preferably, the upper shell and the lower shell are arranged rotationally symmetrically, at least two sets of mutually cooperating plug-in structures are provided between the upper shell and the lower shell, and the plug-in structures of the upper shell and the lower shell are arranged rotationally symmetrically.

[0015] The rotationally symmetrical arrangement of the upper and lower shells allows for a rotationally symmetrical interlocking structure between them. This allows the interlocking structure to be completed during demolding, enabling the upper and lower shells to be removably secured via the interlocking structure. Due to the rotationally symmetrical arrangement of the upper and lower shells, there are at least two sets of interlocking structures. If there are four sets of interlocking structures, two different interlocking structures are possible.

[0016] Preferably, the plug-in structure includes a first plug-in structure, and the edges of the openings of the upper shell and the lower shell are provided with flanges extending outward, and the first plug-in structure is provided on the flanges, and the first plug-in structure includes a plug-in sleeve extending in a horizontal direction and a plug-in column extending into the plug-in sleeve.

[0017] By arranging the plug sleeve and the plug column, the positions of the upper and lower shells in the vertical direction can be restricted.

[0018] Preferably, the plug-in sleeve includes a first mating hole and a second mating hole along the horizontal direction, the aperture of the second mating hole is smaller than the aperture of the first mating hole, the second mating hole is located at one end of the plug-in sleeve close to the plug-in column, and the hole wall of the second mating hole is provided with a limiting groove penetrating along the horizontal direction, and the outer wall of the plug-in column is provided with a limiting protrusion that can pass through the limiting groove; when the upper shell and the lower shell are mated, the limiting protrusion is located in the first mating hole and is staggered with the limiting groove to prevent the plug-in column from detaching from the plug-in sleeve.

[0019] When the plug-in sleeve and the plug-in column are matched, the upper shell is first rotated so that the limiting protrusion and the limiting groove can be aligned, and the plug-in column is inserted into the plug-in sleeve in the horizontal direction so that the limiting protrusion passes through the limiting groove and enters the first matching hole. Then the upper shell is covered with the lower shell, and the limiting protrusion and the limiting groove are staggered, so that the plug-in column cannot be withdrawn from the plug-in sleeve, thereby avoiding the separation of the upper and lower shells and achieving a stable connection between the upper and lower shells.

[0020] Preferably, the plug-in structure also includes a second plug-in structure, the flange includes a horizontal flange extending in the horizontal direction, the horizontal flange is provided with the second plug-in structure, the second plug-in structure includes a plug-in hole extending in the up and down directions and a plug-in protrusion cooperating with the plug-in hole.

[0021] The horizontal flange allows the upper and lower shells to abut against each other when mated. The plug-in structure provided on the horizontal flange eliminates the need for thicker sidewalls. The upper shell's plug-in holes and protrusions are rotationally symmetrical with those of the lower shell, allowing them to be manufactured using a single mold. The plug-in structure also facilitates quick assembly.

[0022] Preferably, the plug-in sleeve includes a first mating hole and a second mating hole along the horizontal direction, the aperture of the second mating hole is smaller than the aperture of the first mating hole, the second mating hole is located at one end of the plug-in sleeve close to the plug-in column, and the elastic expansion pin radially contracts when passing through the second mating hole, and radially expands after completely passing through, thereby realizing a fixed connection between the first shell and the second shell.

[0023] The upper shell and the lower shell can be fixed directly by plugging them together through the elastic expansion pin, which is relatively simple to operate.

[0024] Preferably, the plug-in column includes a connecting portion and a limiting portion, the diameter of the limiting portion is larger than the diameter of the connecting portion, and a step surface is formed between the connecting portion and the limiting portion. When the plug-in column is fully inserted into the plug-in sleeve, the end of the plug-in sleeve contacts the step surface.

[0025] The stepped surface can limit the extreme insertion positions of the plug-in column and the plug-in sleeve.

[0026] Preferably, the diameter of the front end of the plug-in column gradually increases from front to back.

[0027] The diameter of the front end of the plug-in post gradually increases from front to back to form a guiding structure, so as to facilitate the plug-in fit between the plug-in post and the plug-in sleeve.

[0028] Preferably, an extension edge extending downward is provided at the upper edge of the notch of the upper shell, and a flap covering the entrance and exit is rotatably connected to the extension edge.

[0029] By arranging the flap, the flap can be closed after the cat enters the cavity, and the flap can also be automatically closed after the cat comes out.

[0030] Preferably, the top of the upper shell and the bottom of the lower shell are both provided with a plurality of reinforcing ribs extending in the horizontal direction.

[0031] The strength of the top of the upper shell and the bottom of the lower shell can be strengthened by providing the reinforcing ribs, and the friction between the bottom of the lower shell and the ground can be increased.

[0032] Compared with the prior art, the utility model has the following advantages: it can realize stacking between the upper and lower shells, reduce the stacking volume, and thus facilitate the transportation of the upper and lower shells; the upper and lower shells can be demolded through a mold, reducing production costs; and it is easy for users to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the utility model;

[0034] Figure 2 Schematic diagram of the structure after the upper shell is fixed with the flap;

[0035] Figure 3 for Figure 2 Enlarged view of the circled area;

[0036] Figure 4 for Figure 2 Back view of

[0037] Figure 5 It is an enlarged view of the connector sleeve and the connector post;

[0038] Figure 6 It is a structural diagram of the plug-in column and the plug-in sleeve after being plugged in and matched.

[0039] Figure 7 This is a schematic structural diagram of the plug-in column of Example 2.

[0040] Figure 8 This is a cross-sectional view of the plug-in post and the plug-in socket of Example 2 after being mated.

[0041] Figure numbers: 1. Upper shell; 11. Notch; 2. Lower shell; 3. Reinforcing rib; 41. Horizontal flange; 42. Vertical flange; 5. Connecting sleeve; 51. Connecting column; 52. Limiting portion; 53. Limiting groove; 54. Limiting protrusion; 55. First matching hole; 56. Second matching hole; 61. Connecting hole; 62. Connecting protrusion; 7. Flap; 71. Extended edge; 711. Connecting hole; 72. Ring part. DETAILED DESCRIPTION

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1

[0044] like Figures 1 to 3 As shown, this embodiment discloses a closed cat litter box, including an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are arranged to open to each other, and the upper shell 1 and the lower shell 2 enclose a cavity for placing cat litter and for cat excretion. The upper shell 1 and the lower shell 2 are arranged in rotational symmetry, the opening size of the upper shell 1 gradually increases from top to bottom, and the opening size of the lower shell 2 gradually increases from bottom to top. The upper shell 1 and the lower shell 2 are both prism-shaped, so that the upper shell 1 can be stacked with the lower shell after turning 180°. The edges of the openings of the upper shell 1 and the lower shell 2 are provided with horizontal flanges 41 extending outward. When the upper shell 1 and the lower shell 2 are installed together, the horizontal flanges 41 of the upper shell 1 and the lower shell 2 abut against each other.

[0045] The top of the upper shell 1 and the bottom of the lower shell 2 (not shown) are both provided with a plurality of reinforcing ribs 3 extending in the horizontal direction.

[0046] The horizontal flanges 41 on the front sides of the upper and lower shells 1 and 2 are provided with a plug-in structure comprising a first plug-in structure and a second plug-in structure. The second plug-in structure comprises a vertically extending plug-in hole 61 and a plug-in protrusion 62 that mates with the plug-in hole 61. The plug-in hole 61 and plug-in protrusion 62 of the upper shell 1 are rotationally symmetrical with those of the lower shell 2.

[0047] A notch 11 is provided on the front side of both the upper shell 1 and the lower shell 2, and an entrance and exit is formed between the two notches 11 so that the cat can enter and exit. The upper end of the notch 11 of the upper shell 1 and the lower end of the notch 11 of the lower shell 2 are respectively provided with an extension edge 71 extending downward and upward. The extension edge 71 is provided with two connecting holes 711 that pass through the inside and outside. A ring member 72 passes through the connecting hole 711 of the extension edge 71 of the upper shell 1, and a flap 7 passes through the ring member 72 to realize the rotational connection between the flap 7 and the upper shell 1. Among them, since the upper shell 1 and the lower shell 2 are produced by a mold, the lower shell 2 is also provided with an extension edge 71, but the extension edge 71 of the lower shell 2 does not need to be used. Therefore, the concepts of the upper shell 1 and the lower shell 2 are uncertain when the mold is just processed. Only when the two are fully assembled can the concepts of the upper shell 1 and the lower shell 2 be truly defined.

[0048] like Figures 4 to 6 As shown, a vertical flange 42 extending in the vertical direction is provided at the outer edge of the horizontal flange 41, and there is a distance between the vertical flange 42 and the outer walls of the upper shell 1 and the lower shell 2. A first plug-in structure is provided on the vertical flange 42 located on the rear side of the upper shell 1 and the lower shell 2. The first plug-in structure includes a plug-in sleeve 5 extending in the horizontal direction and a plug-in post 51 extending into the plug-in sleeve 5. The end of the plug-in post 51 includes a plug-in portion and a limiter 52. The diameter of the limiter 52 is larger than the diameter of the plug-in portion, and a stepped surface is formed between the limiter 52 and the plug-in portion. When the plug-in post 51 and the plug-in sleeve 5 are fully mated, the end face of the plug-in sleeve 5 contacts the stepped surface. The front end of the plug-in post 51 is hemispherical, so that the diameter of the end of the plug-in post 51 gradually increases from front to back, thereby providing a guide for the plug-in during insertion and facilitating the mating of the two.

[0049] The plug-in sleeve 5 includes a first mating hole 55 and a second mating hole 56 along the horizontal direction. The second mating hole 56 has a smaller diameter than the first mating hole 55 and is interconnected. The second mating hole 56 is located at the end of the plug-in sleeve 5 near the plug-in post 51. Two retaining grooves 53 are formed in the wall of the second mating hole 56, extending horizontally from the horizontal direction and opening radially inward. The two retaining grooves 53 are arranged radially symmetrically. The outer wall of the plug-in post 51 is provided with two retaining protrusions 54 that pass through the retaining grooves 53. When the upper housing 1 is placed horizontally, the two retaining grooves 53 are located at the top and bottom of the plug-in sleeve 5. When the upper housing 1 is rotated 90°, the two retaining grooves 53 are located at the front and back of the plug-in sleeve 5, allowing it to be mated with the plug-in post 51 of the lower housing 2. When the upper and lower housings 1 are mated, the retaining protrusions 54 are located within the first mating hole 55 and staggered in the retaining grooves 53 to prevent the plug-in post 51 from disengaging from the plug-in sleeve 5. The plug-in posts 51 and the plug-in sleeve 5 of the upper housing 1 are rotationally symmetrical to the plug-in posts 51 and the plug-in sleeve 5 of the lower housing 2 .

[0050] When stacking or transporting the upper shell 1 and the lower shell 2, the upper shell 1 can be rotated 180° so that the openings of both the upper shell 1 and the lower shell 2 face upward. At this time, the two can be nested and stacked together. When the upper shell 1 and the lower shell 2 need to be installed, the openings of the upper shell 1 and the lower shell 2 are facing each other, and the upper shell 1 is first flipped upward 90° so that the limit groove 53 and the limit protrusion 54 are aligned. The upper shell 1 is then mated laterally with the lower shell 2 so that the plug-in column 51 is inserted into the plug-in sleeve 5. The upper shell 1 is then flipped downward 90° to cover the lower shell 2 to complete the assembly. The plug-in protrusion 62 and the plug-in hole 61 are mated to complete the assembly between the upper shell 1 and the lower shell 2.

[0051] Example 2

[0052] like Figure 7 and Figure 8 As shown, the distinguishing feature of this embodiment 2 from embodiment 1 is that the plug-in post 51 is an elastic expansion pin, and the front end of the plug-in post 51 has a tapered head with a maximum diameter greater than the diameter of the second mating hole 56 and smaller than the diameter of the first mating hole 55. An axial gap is provided at the axis of the plug-in post 51. When the plug-in post 51 passes through the second mating hole 56, the gap allows the tapered head of the plug-in post 51 to radially contract. After completely passing through the second mating hole 56, the plug-in post 51 radially expands, thereby achieving a fixed connection between the first and second shells.

Claims

1. A closed cat litter box, comprising an upper shell and a lower shell that are detachably fixed to each other, characterized in that: The walls of the upper shell and the lower shell are both provided with notches, and the two notches form entrances and exits for the cat to enter and exit, and the upper shell and the lower shell are opened to each other and a cavity is formed between the two; the opening size of the upper shell gradually increases from top to bottom, and the opening size of the lower shell gradually increases from bottom to top, and the upper shell and the lower shell are symmetrically arranged along the up and down directions; when the upper shell is flipped 180°, it can be stacked with the lower shell; the upper shell and the lower shell are rotationally symmetrically arranged, and at least two groups of mutually cooperating plug-in structures are provided between the upper shell and the lower shell, and the plug-in structures of the upper shell and the lower shell are rotationally symmetrically arranged; the plug-in structure includes a first plug-in structure, and the edges of the openings of the upper shell and the lower shell are provided with flanges extending outward, and the first plug-in structure is provided on the flange, and the first plug-in structure includes a plug-in sleeve extending in the horizontal direction and a plug-in column extending into the plug-in sleeve; The plug sleeve includes a first matching hole and a second matching hole in the horizontal direction, the aperture of the second matching hole is smaller than that of the first matching hole, the second matching hole is located at one end of the plug sleeve close to the plug post, a limiting groove is provided on the hole wall of the second matching hole and passes through the horizontal direction, and a limiting protrusion that can pass through the limiting groove is provided on the outer wall of the plug post; when the upper shell and the lower shell are matched, the limiting protrusion is located in the first matching hole and is staggered with the limiting groove to prevent the plug post from detaching from the plug sleeve; or The plug-in sleeve includes a first mating hole and a second mating hole along the horizontal direction. The aperture of the second mating hole is smaller than that of the first mating hole. The second mating hole is located at one end of the plug-in sleeve close to the plug-in column. The elastic expansion pin radially contracts when passing through the second mating hole, and radially expands after completely passing through, thereby realizing a fixed connection between the first shell and the second shell.

2. The closed cat litter box according to claim 1, characterized in that: The plug-in structure also includes a second plug-in structure, the flange includes a horizontal flange extending in the horizontal direction, the horizontal flange is provided with the second plug-in structure, the second plug-in structure includes a plug-in hole extending in the up and down directions and a plug-in protrusion cooperating with the plug-in hole.

3. The closed cat litter box according to claim 1 or 2, characterized in that: The plug-in column includes a plug-in portion and a limiting portion. The diameter of the limiting portion is larger than the diameter of the plug-in portion. A step surface is formed between the plug-in portion and the limiting portion. When the plug-in column is fully inserted into the plug-in sleeve, the end of the plug-in sleeve contacts the step surface.

4. The closed cat litter box according to claim 1 or 2, characterized in that: The diameter of the front end of the plug-in column gradually increases from front to back.

5. The closed cat litter box according to claim 1 or 2, characterized in that: An extension edge extending downward is provided at the upper end edge of the notch of the upper shell, and a flap covering the entrance and exit is rotatably connected to the extension edge.

6. The closed cat litter box according to claim 1 or 2, characterized in that: The top of the upper shell and the bottom of the lower shell are both provided with a plurality of reinforcing ribs extending in the horizontal direction.

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