Sand silo for pets and pet toilet

Abstract

The utility model discloses a sand silo for pets and a pet toilet which are safe to use. According to the technical scheme, the sand bin for the pets is arranged in a pet toilet for the pets to move or excrete, the sand bin comprises a cavity for containing the pets, an inlet and outlet and a sand filtering net, the sand bin further comprises an upper shell, a lower shell and an excretion channel, the excretion channel is provided with an excretion opening communicated with the cavity and a discharging opening communicated with the outside, and the sand filtering net is arranged in the cavity. The excretion channel is suitable for the excretion to pass through; the upper shell and the lower shell are combined together to form a sand silo main body, the sand filter screen is connected with the upper shell and divides a sand storage space in the cavity, and the discharge port, the discharge port and the discharge channel are arranged on the upper shell; in the rotating direction of pouring out the excrement, the excrement firstly passes through the sand filter screen and then reaches the discharge port, and the discharge port and the discharge port are staggered in the orthographic projection direction, so that the discharge channel has a preset gradient or radian.

Description

Technical Field

[0001] The utility model relates to the technical field of pet supplies, in particular to a pet litter box and a pet toilet. Background Art

[0002] As people's living standards continue to improve, more and more families are starting to keep pets, especially cats or dogs. In real life, pets have become a member of many families, so the health of pets is as important as family members. Some smart pet toilets have appeared on the market, which have realized the automatic separation of pet excrement and pet litter. Among them, these smart pet toilets all include an important component-sand bin, which is used to accommodate pets and realize the separation of excrement and pet litter. The small gear on the host in the pet toilet drives the large gear on the sand bin to rotate, so as to realize the automatic separation of excrement and the reset of the sand bin. The separated excrement passes through the sand filter net and then is discharged from the feces outlet into the excrement collection box of the pet toilet. Then the sand bin is reset to its initial state, completing the process of automatic cleaning of pet excrement in the pet toilet. In the prior art, in order to allow the excrement separated by the sand bin to fall smoothly into the excrement collection box, the excrement outlet is usually set to be very thin and nearly vertical. When the sand bin is rotating to clean the excrement, if the pet is moving in the sand bin, the pet's feet are likely to stick out of the sand bin through the excrement outlet, posing a safety hazard to the pet; users also have a bad experience of seeing the situation in the excrement collection box through the excrement outlet. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem solved by the utility model is to provide a pet litter box and a pet toilet that are safe to use.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a pet litter bin, which is arranged in a pet toilet for pet activities or excretion, the sand bin comprises a cavity for accommodating pets, an inlet and outlet for pets to enter and exit the cavity, and a sand filter net, the sand bin can make a predetermined rotational motion under the drive of an external force to pour out the excrement or pour out the contaminated pet litter, the sand bin also comprises an upper shell, a lower shell and an excretion channel, the excretion channel has an excretion port connected to the cavity and an excretion port connected to the outside, and the excretion channel is suitable for the excrement to pass through; the upper shell and the lower shell are combined to form a sand bin body, the sand filter net is connected to the upper shell and separates a sand storage space in the cavity, the excretion port, the discharge port and the excretion channel are arranged on the upper shell; in the rotation direction of pouring out the excrement, the excrement first passes through the sand filter net and then reaches the excretion port, and the excretion port and the discharge port are staggered in the direction of the orthographic projection so that the excretion channel has a predetermined slope or curvature.

[0005] Further, in the top view of the sand bin in this technical solution, the discharge port and the outlet do not overlap.

[0006] Further, in this technical solution, in the rotation direction, the discharge port is located behind the outlet, and the outlet is located above the sand storage space or in front of the sand filtering net.

[0007] Further, in this technical solution, the sand storage space includes two bag-shaped spaces, and the two bag-shaped spaces are separately located on both sides of the discharge channel.

[0008] Further, in this technical solution, the intermediate connection structure of the two bag-shaped spaces is set as a convex arc surface or an inclined surface.

[0009] Further, in this technical solution, in the rotation direction, the discharge port is located in front of the outlet; the discharge channel is arranged in an arc shape along the rotation direction.

[0010] Further, in this technical solution, the discharge port is in the shape of a flared opening, and the discharge port extends from the middle of the cavity to both side walls of the cavity.

[0011] Further, in this technical solution, both the cavity and the inlet / outlet are surrounded by the upper shell and the lower shell; the upper shell and the lower shell are connected by snap-fit to form the main body of the sand bin, and a plurality of articulated latches are provided on one of the upper shell and the lower shell, and corresponding positions are provided on the other for matching.

[0012] Further, in this technical solution, the upper shell includes an inner shell and an outer shell, the inner shell and the outer shell are sleeved together as a whole, the discharge channel is composed of the inner shell and the outer shell, the discharge port is arranged on the inner shell, and the outlet is arranged on the outer shell.

[0013] Further, in this technical solution, a baffle for limiting the extension of the discharge channel to the outlet is provided on the inner wall of the outer shell, the baffle is arranged at the edge of the outlet, and the structure arranged on the inner shell in the discharge channel abuts against or is close to the baffle.

[0014] Further, in this technical solution, a guiding structure is provided at the edge of the discharge port of the inner shell, and the guiding structure extends from the cavity into the discharge channel to guide an object into the discharge channel; the extension length of the guiding structure does not affect the discharge of the excrement through the discharge channel.

[0015] Further, in this technical solution, the upper shell includes an inner shell and an outer shell, the inner shell and the outer shell are sleeved together as a whole, and the discharge channel is arranged on the inner shell or on the outer shell.

[0016] Furthermore, a guide plate is provided in the discharge channel of the present technical solution. The guide plate has a predetermined slope to guide the excrement from the discharge port to the discharge outlet; a part of the guide plate is provided on the inner shell, and the other part is provided on the outer shell, and the two parts are in contact or in close contact.

[0017] Furthermore, when the discharge outlet is upward or downward in the present technical solution, the acute angle range between the guide plate and the horizontal plane is between 25° and 40°.

[0018] Furthermore, the inner surface of the inner shell facing the cavity in the present technical solution is set to a smooth structure; the filter sand net is detachably connected to the inner side wall of the inner shell, and the filter sand net is provided with an inwardly concave arc surface structure.

[0019] Furthermore, the sand bin in the present technical solution further includes a front frame and a rear ring. The upper shell and the lower shell are connected by a detachable structure. The entrance and exit are located on one end face of the sand bin main body. The rear ring is detachably sleeved on the sand bin main body and is located at one end away from the entrance and exit to prevent the upper shell and the lower shell from separating; the front frame is detachably connected to the sand bin main body and is located at the edge position of the entrance and exit. A part of the front frame is connected to the upper shell, and a part is connected to the lower shell.

[0020] Furthermore, a transmission tooth is provided on the rear ring to form a gear structure. The transmission tooth is used to cooperate with the driving part in the pet toilet to drive the sand bin to rotate; the front frame is a collar, and the front frame surrounds the edge of the entrance and exit.

[0021] Furthermore, the rear ring in the present technical solution is composed of multiple segments. One end between each segment is movably connected by a hinge structure. Connecting holes are respectively provided on the unconnected head and tail free ends. The rear ring includes a pin bridge, and the head and tail free ends are fixed by inserting the pin bridge into the two connecting holes.

[0022] Furthermore, at least a card slot for accommodating a part of the rear ring is provided on the sand bin main body. A notch is provided on the side wall of the card slot, and a protrusion matching the notch protrudes correspondingly on the rear ring.

[0023] Furthermore, at least a card slot for accommodating a part of the rear ring is provided on the sand bin main body. Two insertion holes are provided on the card slot, and the pin bridge first passes through the two insertion holes and then extends into the two connecting holes.

[0024] Furthermore, the upper shell and the lower shell are connected by plug-in cooperation to form the sand bin main body. A plurality of slots are provided on one of the upper shell and the lower shell, and plugs are correspondingly matched on the other.

[0025] Furthermore, the upper shell and the lower shell in the technical solution are connected by means of a latch to form a sand bin body, and a plurality of sockets are provided on the upper shell and the lower shell respectively, and a latch is interference-fitted in each socket.

[0026] The utility model also discloses a technical solution for a pet toilet, which comprises a litter bin and a main unit. The litter bin is arranged on the main unit and can be rotated by the main unit. The litter bin is a pet litter bin described in any one of the above technical solutions.

[0027] The technical solution provided by the utility model mainly has the following beneficial effects: since the sand bin also includes an excretion channel, the excretion channel is suitable for the passage of the excrement, the sand bin can make a predetermined rotational movement under the drive of an external force to separate the excrement and pet litter and then pour out the excrement, or pour out the contaminated pet litter, and in the rotation direction of pouring out the excrement, the excrement first passes through the sand filter net and then reaches the excretion port, and the excretion port and the discharge outlet are staggered in the direction of the orthographic projection so that the excretion channel has a predetermined slope or curvature, so the setting of this excretion channel can reduce or close the intersection between the excretion port and the discharge outlet to prevent the pet's feet from extending out of the sand bin through the excretion channel, and can also prevent the user from seeing the scene outside the sand bin as much as possible, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. It is obvious that the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a structural stereogram of a pet toilet in an embodiment of the utility model;

[0030] Figure 2 yes Figure 1 A three-dimensional diagram of the structure in which the middle upper cover and the sand bin are separated from the main engine;

[0031] Figure 3 This is a right side view of the structure of the pet toilet in the embodiment of the utility model;

[0032] Figure 4 This is a structural exploded view of the sand bin in the embodiment of the utility model;

[0033] Figure 5 It is a structural stereogram of the upper shell in the embodiment of the utility model;

[0034] Figure 6It is a structural exploded view of the upper shell in the embodiment of the present utility model;

[0035] Figure 7 It is a transverse cross-sectional view of the sand bin in the initial position in the embodiment of the present utility model;

[0036] Figure 8 It is a three-dimensional view of the sand bin with the filter screen removed to expose the sand storage space in the embodiment of the present utility model;

[0037] Figure 9 It is a schematic diagram of the state of the sand bin reaching the final position during the process of screening excrement in the embodiment of the present utility model;

[0038] Figure 10 It is a three-dimensional view of the front frame in the embodiment of the present utility model;

[0039] Figure 11 It is a cross-sectional view of the front frame fixed on the edge of the entrance and exit in the embodiment of the present utility model;

[0040] Figure 12 It is Figure 11 a partial enlarged view of the matching part of the front frame and the sand bin main body circled in;

[0041] Figure 13 It is an exploded view of the rear ring and the sand bin main body in the embodiment of the present utility model;

[0042] Figure 14 It is another three-dimensional view of the rear ring in the embodiment of the present utility model;

[0043] Figure 15 It is a transverse cross-sectional view of another embodiment of the present invention with a guide plate provided in the excretion channel;

[0044] Figure 16 It is a structural exploded view of the upper shell in another embodiment of the present invention. Specific embodiments

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0046] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "set" and "connect" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] As used herein, the term "pet" mainly refers to common feline or canine animals. For ease of description, spatially relative terms may be used in the text to describe the relationship of one element or feature shown in the drawings to another element or feature. These relative terms include, for example, "front", "rear", "circumferential", "peripheral", "top", "one end", "end face", "outer", "high", "low", "bottom", "upper", "lower", "side", "inner", "lateral", etc. Such spatially relative terms are intended to include different orientations of the mechanism during use or operation in addition to the orientation depicted in the figures. For example, if the mechanism in the figure is flipped, an element described as "below" or "beneath" another element or feature will then be oriented as "above" or "over" the other element or feature. Thus, the exemplary term "below" can include both the upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions) and the spatially relative descriptors used in the text are interpreted accordingly.

[0048] As Figure 1 , Figure 2 shown, a pet toilet 100 provided by a preferred embodiment of the present invention includes a main body 110, an upper cover 120, and a pet sand bin 130. The sand bin 130 has an entrance 131 for the pet to enter and exit, and the sand bin 130 is used for the pet to move or excrete. The sand bin 130 is disposed on the main body 110 and can be driven by a transmission gear (driving member 111) on the main body 110 to rotate forward or backward. The upper cover 120 can cover the main body 110 to cover the sand bin 130. The sand bin 130 is generally cylindrical, and one end provided with the entrance 131 is a plane. The cross-section of the sand bin 130 in the rotation direction is circular. The upper cover 120 can be covered on the main body 110. At this time, the sand bin 130 is covered by the upper cover 120, and only the entrance 131 of the sand bin 130 is exposed. After the sand bin 130 is disposed on the main body 110, the whole sand bin 130 is in a slightly upward-tilted state, and the angle formed between the rotation axis of the sand bin 130 and the horizontal plane ranges from 10 degrees to 20 degrees. In this embodiment, as Figure 3 shown, the angle formed between the rotation axis of the sand bin 130 and the horizontal plane is 15 degrees.

[0049] As Figure 4 , Figure 5As shown, the sand bin 130 includes a lower housing 132, an upper housing 133, a rear ring 134, a front frame 135, a cavity 136 for accommodating a pet, an excretion passage 138 communicating the cavity 136 with the outside, and a sand filtering net 1334 for separating excrement 101 and pet sand 102. The entrance / exit 131 communicates with the cavity 136. The entrance / exit 131 is located on one end face of the main body of the sand bin 130 and is arranged perpendicular to the rotation axis. The upper housing 133 and the lower housing 132 are connected and combined through a detachable structure to form the main body of the sand bin. The cavity 136 and the entrance / exit 131 are both surrounded by the upper housing 133 and the lower housing 132. The sand filtering net 1334 is connected to the upper housing 133 surrounding the cavity 136. The sand filtering net 1334 is located inside the cavity 136 and separates a sand storage space 137 inside the cavity 136. The sand bin 130 can be driven by an external force to perform a predetermined counterclockwise (positive rotation) or clockwise (reverse rotation) movement to separate the excrement 101 and the pet sand 102 and then pour out the excrement 101 or pour out the contaminated pet sand 102.

[0050] As Figure 6 , Figure 7 shown, the rear ring 134 is detachably sleeved on the main body of the sand bin and is located at one end away from the entrance / exit 131 to prevent the upper housing 133 and the lower housing 132 from separating; the front frame 135 is detachably connected to the main body of the sand bin and is located at the edge position of the entrance / exit 131. A part of the front frame 135 is connected to the upper housing 133 and a part is connected to the lower housing 132.

[0051] As Figure 4 , Figure 6As shown, the excretion channel 138 has an excretion port 1382 communicating with the cavity 136 and an outlet 1381 communicating with the outside. The excretion channel 138 is adapted for the excretion 101 to pass through. In the rotation direction of the sand bin 130 when it rotates to pour out the excretion 101 (clockwise rotation in this embodiment), the excretion 101 first passes through the filter screen 1334 (the sand bin 130 rotates from the initial position until the excretion 101 and the pet sand 102 are separated); as the sand bin 130 continues to rotate, the excretion 101 then reaches the excretion port 1382 and enters the excretion channel 138. The excretion port 1382 and the outlet 1381 are arranged staggeredly in the orthographic projection direction, and the excretion channel 138 has a predetermined slope or arc. The staggered arrangement is to reduce or prevent the formation of a scissor opening between the excretion port 1382 and the outlet 1381, thereby preventing the pet's feet from extending outside the sand bin 130; the slope or arc is for the purpose of accelerating the excretion 101 to leave the excretion channel 138. In the chronological order of the sand bin 130 reaching the horizontal plane during rotation, the excretion port 1382 is located behind the filter screen 1334, and the excretion port 1382 and the outlet 1381 can be arranged successively according to actual needs in this rotation direction. The excretion port 1382, the outlet 1381 and the excretion channel 138 are all arranged on the upper housing 133, and the excretion channel 138 is arranged in an arc shape along the rotation direction.

[0052] As Figure 6 shown, the upper housing 133 includes an inner housing 1331 and an outer housing 1332. The inner housing 1331 and the outer housing 1332 are sleeved together as a whole. The excretion channel 138 is formed by the combination of the inner housing 1331 and the outer housing 1332. The excretion port 1382 is arranged on the inner housing 1331, the outlet 1381 is arranged on the outer housing 1332, and the inner channel side wall of the excretion channel 138 is surrounded by the structures in the inner housing 1331 and the outer housing 1332. The inner surface of the inner housing 1331 facing the cavity 136 is set to a smooth structure; a stop edge 13321 for defining the extension of the excretion channel 138 to the outlet 1381 is arranged on the inner wall of the outer housing 1332. The stop edge 13321 is arranged at the edge of the outlet 1381, and the structure arranged on the inner housing 1331 in the excretion channel 138 abuts against (or can be close to) the stop edge 13321. In other embodiments, the excretion channel 138 can also be integrally arranged, such as the excretion channel 138 being integrally formed on the inner housing 1331 or arranged on the outer housing 1332.

[0053] As Figure 7As shown in the figure, in the top view of the sand bin 130, the discharge opening 1382 and the outlet 1381 do not overlap. The inner shell 1331 is provided with a guiding structure 13311 at the edge of the discharge opening 1382 to guide the excrement 101 or the pet sand 102 into the discharge channel 138. The extending length of the guiding structure 13311 does not affect the passage of the excrement 101 through the discharge channel 138, but can prevent the excrement 101 or the pet sand 102 in the discharge channel 138 from returning to the cavity 136. In this embodiment, the guiding structure 13311 is set as a flange extending into the discharge channel 138. In the counterclockwise rotation direction, the discharge opening 1382 is located behind the outlet 1381 (for example, in the chronological order, the outlet 1381 passes through the horizontal plane before the discharge opening 1382), and the outlet 1381 is located above the sand storage space 137 (or in front of the sand filtering net 1334). As Figure 9 shown, during the process of rotating and screening the excrement 101 in the sand bin 130, the pet sand 102 passes through the sand filtering net 1334 and enters the sand storage space 137. Subsequently, the excrement 101 first passes through the sand filtering net 1334 and then enters the discharge channel 138 through the discharge opening 1382; during the process of the sand bin 130 rotating back to the default position, the excrement 101 in the discharge channel 138 passes through the discharge channel 138 again and falls out from the outlet 1381.

[0054] In other embodiments, in the rotation direction, the discharge opening 1382 can also be arranged in front of the outlet 1381. The pet excrement 101 first passes through the sand filtering net 1334 and then enters the discharge channel 138 through the discharge opening 1382. After the sand bin 130 rotates a certain angle, the pet excrement 101 falls out from the outlet 1381.

[0055] As Figure 7 shown, the sand filtering net 1334 is detachably connected to the inner side wall of the inner shell 1331, and the sand filtering net 1334 is provided with an inwardly concave arc surface structure. When the sand bin 130 rotates for discharging, the inwardly concave arc surface structure of the sand filtering net 1334 can promote the rapid entry of the excrement 101 into the discharge opening 1382.

[0056] As Figure 8 shown, the sand storage space 137 includes two bag-shaped spaces 1371, and the two bag-shaped spaces 1371 are separately located on both sides of the discharge channel 138. The intermediate connection structure 1372 of the two bag-shaped spaces 1371 is set as an outwardly convex arc surface or an inclined slope. The discharge opening 1382 is in a flared shape, and the flared opening extends from the middle of the cavity 136 to the two side walls of the cavity 136.

[0057] The detachable structure for connecting the upper shell 133 and the lower shell 132 includes snap fit or / and plug-in fit or / and pin fit. The snap fit scheme is as Figure 4 、 Figure 5As shown in the figure, four articulated latches 1325 are provided on one of the upper housing 133 and the lower housing 132, and corresponding latches 1335 are provided on the other. After the articulated latches 1325 are buckled on the latches 1335, the upper housing 133 and the lower housing 132 are connected together to form the sand bin body. The solution for the upper housing 133 and the lower housing 132 to be connected by plug-in fit to form the sand bin body can be that, for example, a plurality of slots are provided on one of the upper housing 133 and the lower housing 132, and corresponding plugs are provided on the other. The solution for the upper housing 133 and the lower housing 132 to be connected by pin fit to form the sand bin body is that, for example, a plurality of jacks are correspondingly provided on the upper housing 133 and the lower housing 132, and a pin is press-fitted in each jack.

[0058] As Figure 4 shown in the figure, a transmission gear 1341 is provided on the rear ring 134 to form a gear structure. The transmission gear 1341 is used to cooperate with the driving member 111 in the pet toilet 100 to drive the sand bin 130 to rotate. In other embodiments, the transmission gear 1341 can also be directly provided on the outer surface of the sand bin body, so as to cooperate with the driving member 111 in the pet toilet 100 to drive the sand bin 130 to rotate.

[0059] As Figure 10 、 Figure 11 、 Figure 12 shown in the figure, the front frame 135 is a collar. The front frame 135 surrounds the edge of the entrance 131. The collar 135 and the sand bin body adopt a fixed connection solution of snap fit with concave positioning points 1035 and convex positioning points 1352. Specifically, a plurality of elastic buckles 1351 are provided on the collar 135, and each elastic buckle 1351 is provided with a convex positioning point 1352. A plurality of concave positioning points 1035 are correspondingly provided on the edge of the entrance 131 of the sand bin body. In other embodiments, the collar 135 and the sand bin body can also adopt a fixed connection solution of elastic snap fasteners.

[0060] As Figure 13 、 Figure 14 shown in the figure, it is a schematic diagram of the fixed connection solution between the rear ring 134 and the sand bin body. The sand bin body is provided with a U-shaped card slot 1033 for accommodating a part of the rear ring 134. Eight notches 1034 are evenly distributed on the side wall of the card slot 1033, and eight protrusions 1344 corresponding to the notches 1034 are protruded on the rear ring 134. The settings of the notches 1034 and the protrusions 1344 can make the torque transmission for the rear ring 134 to drive the sand bin 130 to rotate more reliable.

[0061] Again, as Figure 13 、 Figure 14As shown, the rear ring 134 consists of two segments, which are movably connected by a hinge structure between the two segments so that the two segments in the rear ring 134 can be opened at a preset angle for quick installation in the card slot 1033. Connecting holes 1345 are provided at the two free ends of the head and tail of the rear ring 134. The rear ring 134 further includes a latch bridge 1343, and the latch bridge 1343 has two latch posts 13431 adapted to the two connecting holes 1345. A fixing structure 1036 is provided on the sand bin body, and the fixing structure 1036 can cooperate with the latch bridge 1343 so that after the two latch posts 13431 enter the connecting holes 1345, the relative movement of the latch bridge 1343 is limited. Two plug holes 10331 adapted to the two latch posts 13431 are provided on the card slot 1033. When the rear ring 134 is to be fixed on the sand bin 130, the two segments of the rear ring 134 are first opened so that the rear ring 134 is snapped into the card slot 1033 through the side wall of the U-shaped card slot 1033, and then the two latch posts 13431 in the latch bridge 1343 first pass through the two plug holes 10331 and then through the two connecting holes 1345, so that the rear ring 134 is fixed in the card slot 1033 in a circular ring shape.

[0062] As Figure 15 , Figure 16 shown, in other embodiments, a guide plate 1383 may further be provided in the discharge channel 138. The guide plate 1383 has a predetermined slope to guide the excrement 101 from the discharge port 1382 to the discharge outlet 1381. The guide plate 1383 includes a first part 13831 and a second part 13832. The first part 13831 is located on the inner shell 1331, and the second part 13832 is located on the outer shell 1332. The first part 13831 abuts or is in close contact with the second part 13832, and in the radial direction, the first part 13831 is closer to the rotation axis than the second part 13832. When the discharge outlet 1381 faces upward (initial position) or downward (the position for pouring out the excrement 101), the acute angle formed between the guide plate 1383 and the horizontal plane preferably ranges from 25° to 40°. In this embodiment, the acute angle formed between the guide plate 1383 and the horizontal plane is set to 35°.

[0063] Since the sand bin 130 further includes an excretion passage 138 adapted for excreta 101 to pass through, the sand bin 130 can be driven by an external force to perform a predetermined forward and reverse rotational movement to separate the excreta 101 from the pet sand 102 and then pour out the excreta 101, or pour out the contaminated pet sand 103. When the sand bin 130 rotates in the rotational direction of pouring out the excreta 101, the excreta 101 first passes through the sand filtering net 1334 and then reaches the excretion port 1382. The excretion port 1382 and the discharge port 1381 are arranged offset in the orthographic projection direction and the excretion passage 138 has a predetermined slope or arc. Therefore, such a setting of the excretion passage 138 can reduce or close the intersection between the excretion port 1382 and the discharge port 1381 to prevent the pet's feet from extending out of the sand bin 130 through the excretion passage 138, and can also prevent the user from seeing the scene outside the sand bin 130 as much as possible, improving the user experience.

[0064] The above application uses specific examples to elaborate on the principle and implementation mode of the present invention. It should be understood that the above implementation modes are only used to help understand the present invention and should not be construed as a limitation to the present invention. For those of ordinary skill in the art, any minor improvement or equivalent substitution made to the structural form or structure of the present invention based on the idea of the present invention should be included within its protection scope.

Claims

1. A sand bin for pets, which is arranged in a pet toilet for pets to move or excrete. The sand bin includes a cavity for accommodating pets, an entrance and exit for pets to enter and exit the cavity, and a sand filtering net. The sand bin can perform a predetermined rotational movement under the drive of an external force to pour out the excrement or the contaminated pet sand. It is characterized in that: The sand bin further includes an upper shell, a lower shell, and an excretion channel. The excretion channel has an excretion opening communicating with the cavity and an outlet opening communicating with the outside, and the excretion channel is adapted for the excrement to pass through. The upper shell and the lower shell are combined together to form the main body of the sand bin. The filter screen is connected to the upper shell and separates a sand storage space in the cavity. The excretion opening, the outlet opening, and the excretion channel are arranged on the upper shell. In the rotation direction of pouring out the excrement of the sand bin, the excrement first passes through the filter screen and then reaches the excretion opening. The excretion opening and the outlet opening are staggeredly arranged in the orthographic projection direction so that the excretion channel has a predetermined slope or arc.

2. The pet sand bin according to claim 1, wherein: In the top view of the sand bin, the excretion opening and the outlet opening do not overlap.

3. The pet sand bin according to claim 1, characterized in that: In the rotation direction, the excretion opening is located behind the outlet opening, and the outlet opening is located above the sand storage space or in front of the filter screen.

4. The pet sand bin according to claim 3, wherein: The sand storage space includes two bag-shaped spaces, which are separately located on both sides of the excretion channel.

5. The pet sand bin according to claim 4, characterized in that: The intermediate connection structure of the two bag-shaped spaces is set as a convex arc surface or an inclined slope.

6. The pet sand bin according to claim 1, characterized in that: In the rotation direction, the excretion opening is located in front of the outlet opening; the excretion channel is arranged in an arc shape along the rotation direction.

7. The pet sand bin according to claim 1, wherein: The excretion opening is in the shape of a flared mouth, and the excretion opening extends from the middle of the cavity to both side walls of the cavity.

8. The pet sand bin according to claim 1, characterized in that: Both the cavity and the entrance and exit are enclosed by the upper shell and the lower shell. The upper shell and the lower shell are connected by snap fit to form the main body of the sand bin. Multiple articulated latches are provided on one of the upper shell and the lower shell, and corresponding positions are provided on the other for matching.

9. The pet sand bin according to claim 1, wherein: The upper shell includes an inner shell and an outer shell, and the inner shell and the outer shell are sleeved together as a whole. The excretion channel is composed of the inner shell and the outer shell. The excretion opening is arranged on the inner shell, and the outlet opening is arranged on the outer shell.

10. The pet sand bin according to claim 9, characterized in that: A stop edge for limiting the extension of the excretion channel to the outlet opening is provided on the inner wall of the outer shell. The stop edge is arranged at the edge of the outlet opening, and the structure of the excretion channel arranged on the inner shell abuts against or is close to the stop edge.

11. The pet sand bin according to claim 9, characterized in that: A guiding structure is provided at the edge of the excretion opening of the inner shell. The guiding structure extends from the cavity into the excretion channel to guide an object into the excretion channel; the extension length of the guiding structure does not affect the passage of the excrement through the excretion channel.

12. The pet sand bin according to claim 1, characterized in that: The upper shell includes an inner shell and an outer shell, and the inner shell and the outer shell are sleeved together as a whole. The excretion channel is arranged on the inner shell or on the outer shell.

13. The pet sand bin according to claim 12, characterized in that: A guiding plate is provided in the excretion channel. The guiding plate has a predetermined slope to guide the excrement from the excretion opening to the outlet opening. A part of the guiding plate is arranged on the inner shell, and the other part is arranged on the outer shell, and the two parts abut against or are in close contact.

14. The pet sand bin according to claim 13, characterized in that: When the outlet opening faces upward or downward, the acute angle range between the guiding plate and the horizontal plane is between 25° and 40°.

15. The pet sand bin according to any one of claims 9 to 14, characterized in that: The inner surface of the inner shell facing the cavity is set as a smooth structure. The filter screen is detachably connected to the inner side wall of the inner shell, and the filter screen is provided with an inner concave arc surface structure.

16. The pet sand bin according to any one of claims 1 to 14, characterized in that: The sand bin further includes a front frame and a rear ring. The upper shell and the lower shell are connected by a detachable structure. The entrance and exit are located on one end face of the sand bin main body. The rear ring is detachably sleeved on the sand bin main body and is located at one end far from the entrance and exit to prevent the upper shell and the lower shell from separating. The front frame is detachably connected to the sand bin main body and is located at the edge position of the entrance and exit. A part of the front frame is connected to the upper shell and a part is connected to the lower shell.

17. The pet sand bin according to claim 16, wherein: A transmission tooth is provided on the rear ring to form a gear structure. The transmission tooth is used to cooperate with a driving part in the pet toilet to drive the sand bin to rotate. The front frame is a collar that surrounds the edge of the entrance and exit.

18. The pet sand bin according to claim 16, characterized in that: The rear ring is composed of multiple segments. One end between each segment is movably connected by a hinge structure. Connection holes are respectively provided on the free ends of the head and tail that are not connected. The rear ring includes a pin bridge. The free ends of the head and tail are fixed by inserting the two connection holes through the pin bridge.

19. The pet sand bin according to claim 18, wherein: At least a card slot for accommodating a part of the rear ring is provided on the sand bin main body. A notch is provided on the side wall of the card slot, and a protrusion matching the notch protrudes correspondingly on the rear ring.

20. The pet sand bin according to claim 18, characterized in that: At least a card slot for accommodating a part of the rear ring is provided on the sand bin main body. Two insertion holes are provided on the card slot. The pin bridge first passes through the two insertion holes and then extends into the two connection holes.

21. The pet sand bin according to any one of claims 1 to 11, characterized in that: The upper shell and the lower shell are connected by plug-in cooperation to form the sand bin main body. A plurality of slots are provided on one of the upper shell and the lower shell, and plugs are correspondingly matched on the other.

22. The pet sand bin according to any one of claims 1 to 11, characterized in that: The upper shell and the lower shell are connected by pin cooperation to form the sand bin main body. A plurality of jacks are correspondingly provided on the upper shell and the lower shell, and a pin is in interference fit in each jack.

23. A pet toilet, comprising a sand bin and a main body. The sand bin is arranged on the main body and can be driven by the main body to rotate. It is characterized in that: The sand bin is a pet sand bin according to any one of claims 1 to 22.

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