Weighing base and pet toilet

Abstract

The utility model relates to the technical field of pet supplies, and particularly discloses a weighing base and a pet toilet. The weighing base comprises a weighing supporting piece and a base. The weighing base is provided with a first side surface facing the base along the horizontal direction; the base is provided with a second side face facing the weighing base in the horizontal direction. Rolling pieces are arranged on the first side surface and / or the second side surface; the rolling piece is used for abutting against the first side face and the second side face; the rolling piece can roll at least in the vertical direction. When the center of gravity of the weighing support member shifts and inclines, the rolling member abuts against the first side surface and the second side surface at the same time, so that the first side surface and the second side surface are in rolling friction. Compared with the mode that the first side face and the second side face make direct contact when the weighing supporting piece inclines, the friction force between the weighing supporting piece and the base can be effectively reduced, and the effect on weighing precision is reduced. Compared with the mode of arranging an elastic arm, the arrangement structure of the rolling piece is simplified, and the manufacturing and production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of weighing devices, in particular to a weighing base and a pet toilet. BACKGROUND

[0002] In daily life, in addition to common weighing devices such as body scales and article scales, some pet products can also have a weighing function. Among them, pet products refer to various products designed and produced specifically for pets, aiming to meet the needs of pets in life, health, entertainment, etc. Pet products with weighing function can be, for example, pet feeders, pet water dispensers, pet cages, pet nests, pet backpacks, and pet toilets, etc.

[0003] In weighing devices with weighing function, generally, a weighing support for accommodating a weighing object, a main support for mounting the weighing support, a weighing sensor and its support structure are included.

[0004] Taking a pet toilet as an example, its weighing object is pet litter or a litter bin containing pet litter, so its weighing support can be a litter bin base for mounting the litter bin; the main support can be a base for mounting the litter bin. The support structure of the weighing sensor connects the litter bin base and the base; the gravity of the litter bin base and the litter bin acts on the weighing sensor, causing the weighing sensor to deform and perform weight measurement. Therefore, a space for the deformation of the weighing sensor needs to be reserved between the litter bin base and the base.

[0005] In actual application, when a pet enters the litter bin or due to the placement of the pet toilet, the litter bin base will deviate or tilt relative to the base due to the change of the center of gravity, and in severe cases, the litter bin base will contact the base; the friction generated by the contact between the litter bin base and the base will affect the weighing accuracy of the weighing sensor.

[0006] In order to reduce the impact of the deviation of the litter bin base on the weighing accuracy, some pet toilets are provided with a spring arm; the two ends of the spring arm are connected to the litter bin base and the base respectively, providing a reverse spring force when the two deviate or tilt. However, in order to ensure that the spring arm can provide elastic restoring force from all directions, its structure needs to be prepared more complex and has a high cost. INNOVATION CONTENT

[0007] Therefore, the purpose of the present application is to provide a weighing base and a pet toilet for reducing the impact of the deviation of the weighing support on the weighing accuracy through a more simplified structure.

[0008] To achieve the above technical purpose, the first aspect of the present application provides a weighing base, comprising: a weighing support and a base;

[0009] The weighing support is provided with a first side surface in the horizontal direction;

[0010] The base is provided with a second side surface facing the first side surface in a horizontal direction;

[0011] The first side surface and / or the second side surface is provided with a rolling member;

[0012] The rolling member is used to abut against the first side surface and the second side surface;

[0013] The rolling member is rollably arranged at least in a vertical direction.

[0014] Further, the base is provided with a convex column;

[0015] The weighing support is provided with a groove;

[0016] The convex column is clamped into the groove;

[0017] The outer side surface of the convex column and / or the inner side surface of the groove is provided with the rolling member.

[0018] Further, the rolling member is arranged on the outer side surface of the convex column in a first direction and the outer side surface of the convex column in a second direction, and / or the rolling member is arranged on the inner side surface of the groove in a first direction and the inner side surface of the groove in a second direction;

[0019] The first direction and the second direction intersect in a horizontal direction.

[0020] Further, the first direction and the second direction are perpendicular to each other.

[0021] Further, the base is provided with a plurality of convex columns;

[0022] The plurality of convex columns are respectively arranged on both sides of the base in the first direction;

[0023] The rolling member is arranged on the outer side surface of the convex columns facing each other, or the rolling member is arranged on the outer side surface of the convex columns facing away from each other.

[0024] Further, the rolling member is arranged on both sides of the two convex columns in the second direction.

[0025] Further, a plurality of supporting legs are connected to the bottom of the base;

[0026] The convex column is arranged on the top surface of the base, and the bottom surface of the base forms a supporting leg clamping groove corresponding to the position of the convex column;

[0027] The supporting leg is clamped into the supporting leg clamping groove one by one.

[0028] Further, the base is provided with four convex columns;

[0029] The four protruding columns are distributed in a quadrilateral around the center of the base;

[0030] The rolling member is arranged on the outer side of the protruding column away from the center of the base.

[0031] Further, the rolling member is a ball type.

[0032] The second aspect of the present application improves a pet toilet, comprising: a sand bin, a weighing sensor, and the weighing base of any one of the above;

[0033] The sand bin is arranged on the weighing support in the weighing base;

[0034] The weighing sensor abuts against the weighing support and the base in the weighing base.

[0035] Further, it further comprises an elastic pad and a force receiving member;

[0036] The weighing sensor is arranged on the weighing support;

[0037] The force receiving member abuts against the detection contact of the weighing sensor;

[0038] The force receiving member abuts against the base;

[0039] The elastic pad connects the weighing support and the force receiving member, and seals the gap between the weighing support and the force receiving member.

[0040] Further, the weighing support is provided with a mounting groove;

[0041] The weighing sensor is arranged in the mounting groove;

[0042] The elastic pad and the force receiving member seal the opening of the mounting groove.

[0043] From the above technical solutions, the present application provides a weighing base and a pet toilet; wherein the weighing base comprises: a weighing support and a base; the weighing base is provided with a first side face facing the base in the horizontal direction; the base is provided with a second side face facing the weighing base in the horizontal direction; the first side face and / or the second side face is provided with a rolling member; the rolling member is used to abut against the first side face and the second side face; the rolling member is at least vertically rollable.

[0044] When the center of gravity of the weighing support is offset and tilted, the first side surface and the second side surface are in rolling friction due to the rolling member abutting against the first side surface and the second side surface at the same time; compared with the mode that the first side surface and the second side surface directly contact when the weighing support is tilted, the friction between the weighing support and the base can be effectively reduced, and the influence on the weighing precision is reduced. Moreover, compared with the mode of setting the elastic arm, the setting structure of the rolling member is simplified, and the manufacturing and production costs can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0046] Figure 1 A side view line frame diagram of a weighing base provided by an embodiment of the present application;

[0047] Figure 2 A split top view diagram of a weighing base provided by an embodiment of the present application;

[0048] Figure 3 A perspective view of a weighing base provided by an embodiment of the present application;

[0049] Figure 4 A split bottom view diagram of a weighing base provided by an embodiment of the present application;

[0050] Figure 5 A split top view diagram of a weighing base provided by another embodiment of the present application;

[0051] Figure 6 A split bottom view diagram of a weighing base provided by another embodiment of the present application;

[0052] Figure 7 A convex column and a rolling member diagram of a weighing base provided by an embodiment of the present application;

[0053] Figure 8 A base top view diagram of a weighing base provided by an embodiment of the present application;

[0054] Figure 9 A partial cross-sectional view diagram of a pet toilet provided by an embodiment of the present application;

[0055] Figure 10 A perspective view diagram of a weighing base provided by an embodiment of the present application, in which a round groove is arranged in a groove;

[0056] Figure:

[0057] 10, weighing support; 11, first side; 12, groove; 13, mounting groove;

[0058] 20, base; 21, second side; 22, protruding column; 23, leg; 24, leg clamping groove; 25, round groove;

[0059] 30, rolling member;

[0060] 40, weighing sensor; 41, detection contact;

[0061] 50, elastic pad; 51, connecting member;

[0062] 60, force receiving member. DETAILED DESCRIPTION

[0063] The technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0064] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0065] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be replaceably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0066] The first aspect of the embodiments of the present application provides a weighing base, comprising: a weighing support 10 and a base 20. The weighing support 10 is used as a mounting structure of the sand bin, for mounting the sand bin.

[0067] AsFigure 1 As shown, the weighing support 10 is installed on the base 20, and a weighing sensor 40 is arranged between the two. Taking the case that the weighing sensor 40 is installed on the weighing support 10 as an example, the detection contact 41 of the weighing sensor 40 contacts the base 20. The weight of the sand bin and the weighing support 10 both acts on the weighing sensor 40, so that the weighing sensor 40 generates a deformation to measure the weight of the sand bin and the weighing support 10, and then the weight of the shell of the sand bin and the weight of the weighing support 10 are subtracted, so as to obtain the weight of the object inside the sand bin.

[0068] In the embodiment, the weighing support 10 is provided with a first side surface 11 in the horizontal direction; the base 20 is provided with a second side surface 21 facing the first side surface 11 in the horizontal direction. The first side surface 11 and / or the second side surface 21 is provided with a rolling member 30, that is, the rolling member 30 is arranged between the first side surface 11 and the second side surface 21; the rolling member 30 is used to abut against the first side surface 11 and the second side surface 21; the rolling member 30 is rollably arranged at least in the vertical direction.

[0069] When the center of gravity of the weighing support 10 deviates, the weighing support 10 will deviate relative to the base 20 in the vertical direction and / or the horizontal direction; after the weighing support 10 deviates, the rolling member 30 simultaneously contacts the first side surface 11 and the second side surface 21, that is, the rolling member 30 simultaneously contacts the weighing support 10 and the base 20, so that the friction between the weighing support 10 and the base 20 at this time is rolling friction, avoiding that the friction generated by the contact friction is too large to affect the weighing accuracy.

[0070] As an implementation manner, after the weighing support 10 is installed on the base 20, the rolling member 30 can directly abut against the first side surface 11 and the second side surface 21.

[0071] As another implementation manner, after the weighing support 10 is installed on the base 20, the rolling member 30 can only abut against the first side surface 11 or the second side surface 21. For example, the rolling member 30 is arranged on the second side surface 21, when the weighing support 10 does not deviate, the rolling member 30 does not contact the first side surface 11; when the weighing support 10 deviates, the distance between the first side surface 11 and the second side surface 21 is reduced, so that the rolling member 30 simultaneously contacts the first side surface 11 and the second side surface 21.

[0072] That is, in the embodiments provided in the present application, the rolling member 30 is configured to be able to simultaneously contact the weighing support 10 and the base 20 when the weighing support 10 deviates, so that the friction between the two is rolling friction.

[0073] It should be noted that in the embodiment, the normal of the first side surface 11 and the second side surface 21 can be towards the horizontal direction, or can be inclined relative to the horizontal plane, so that when the weighing support 10 is offset, the rolling member 30 can simultaneously contact the first side surface 11 and the second side surface 21, and the weighing support 10 and the base 20 do not directly contact other side surfaces.

[0074] Please refer to Figure 2 and Figure 3 The base 20 is provided with a protruding column 22, the weighing support 10 is provided with a recess 12, the protruding column 22 is clamped into the recess 12, and the outer side surface of the protruding column 22 and / or the inner side surface of the recess 12 is provided with a rolling member 30.

[0075] That is, in the embodiment, the outer side surface of the protruding column 22 serves as the second side surface 21, and the inner side surface of the recess 12 serves as the first side surface 11. The cooperation of the protruding column 22 and the recess 12 can not only play a positioning role in the installation of the weighing support 10, but also ensure that when the weighing support 10 is offset, the rolling member 30 can simultaneously contact the weighing support 10 and the base 20.

[0076] In actual application, the offset of the weighing support 10 relative to the base 20 can occur in the front-rear direction of the base 20, or can occur in the left-right direction of the base 20, so that when the weighing support 10 is offset, the side surface in the front-rear direction and the side surface in the left-right direction between the weighing support 10 and the base 20 can be in contact.

[0077] As a further improvement, in an embodiment, the rolling member 30 is arranged on the outer side surface of the protruding column 22 along the first direction and the outer side surface along the second direction, and / or the rolling member 30 is arranged on the inner side surface of the recess 12 along the first direction and the inner side surface along the second direction; the first direction and the second direction intersect in the horizontal direction.

[0078] By arranging the rolling member 30 in the intersecting first direction and second direction, the offset of the weighing support 10 in multiple directions can be prevented.

[0079] Optionally, the first direction and the second direction are perpendicular to each other.

[0080] In the embodiment shown in the drawings of the present application, the first direction can be the x-axis direction, the second direction can be the y-axis direction, and the vertical direction is the z-axis direction.

[0081] In an embodiment, the protruding column 22 can serve as a connecting piece of the supporting leg 23, so that the installation position of the rolling member 30 corresponds to the position of the supporting leg 23. For example, Figures 2 to 4As shown, the bottom of the base 20 is connected with a plurality of feet 23; the convex column 22 is arranged on the top surface of the base 20, and the bottom surface of the base 20 is formed with a foot clamping groove 24 corresponding to the position of the convex column 22; the feet 23 are clamped into the foot clamping grooves 24 one by one.

[0082] That is, in the embodiment, the number of the convex columns 22 corresponds to the number of the feet 23. The rolling member 30 is arranged on each convex column 22 along the first direction and the second direction, and therefore at least two rolling members 30 are arranged on each convex column 22. In order to ensure the stability of the base 20, the base 20 provided in the embodiment is provided with four feet 23, and correspondingly, the number of the rolling members 30 is eight.

[0083] As described above, the outer side surface of the convex column 22 can be used as the second side surface 21, and the inner side surface of the groove 12 can be used as the first side surface 11. Taking the rolling member 30 arranged on the second side surface 21 as an example, please refer to Figure 5 and Figure 10 The circular groove 25 for installing the rolling member 30 can be arranged on the outer side surface of the convex column 22, that is, the connecting member of the foot 23, so that the rolling member 30 is partially arranged in the circular groove 25 and partially protrudes outward from the convex column 22, so that the rolling member 30 can abut against the inner side surface of the groove 12. By arranging the circular groove 25, the stability of the rolling member 30 after installation can be improved, and the rolling member 30 can be prevented from falling off from the convex column 22.

[0084] Similarly, the circular groove 25 can also be arranged on the inner side surface of the groove 12.

[0085] In another embodiment provided in the application, the number of the rolling members 30 can also not be associated with the number of the feet 23. Please refer to Figures 5 to 7 In the embodiment, the convex column 22 is arranged on the base 20 separately and is not associated with the foot 23; the groove 12 is arranged on the weighing support 10 separately and is also not associated with the foot 23; therefore, in the embodiment, the number of the rolling members 30 is only related to the number of the convex columns 22.

[0086] In a more specific embodiment, the convex column 22 includes a plurality of convex columns 22; the plurality of convex columns 22 are arranged on the two sides of the base 20 along the first direction; the rolling member 30 is arranged on the outer side surfaces of the two convex columns 22 facing each other, or the rolling member 30 is arranged on the outer side surfaces of the two convex columns 22 facing away from each other.

[0087] The outer side surfaces of the two convex columns 22 facing each other refer to the side surfaces of the convex columns 22 close to the center of the base 20; the outer side surfaces of the two convex columns 22 facing away from each other refer to the side surfaces of the convex columns 22 away from the center of the base 20.

[0088] Taking the positive direction of the x-axis as the rear, the negative direction of the x-axis as the front, the positive direction of the y-axis as the right, and the negative direction of the y-axis as the left as an example for description, please refer to Figure 7At this time, the two convex columns 22 are provided with a rolling element 30 in front of one convex column 22 and a rolling element 30 behind the other convex column 22. When the weighing support 10 is shifted forward, the rolling element 30 provided behind the convex column 22 at this time can play a supporting role, ensuring that the weighing support 10 and the base 20 are in rolling friction; when the weighing support 10 is shifted backward, the rolling element 30 provided in front of the convex column 22 at this time can play a supporting role, ensuring that the weighing support 10 and the base 20 are in rolling friction.

[0089] Therefore, in the present embodiment, the two convex columns 22 and the two rolling elements 30 can reduce the friction when the weighing support 10 is shifted forward and backward.

[0090] On the basis of the above embodiment, the rolling element 30 can be provided on both sides of the convex column 22 in the second direction, ensuring that the rolling element 30 can simultaneously contact the weighing support 10 and the base 20 when the weighing support 10 is shifted left and right.

[0091] In actual application, the number of convex columns 22 can be two; correspondingly, the number of rolling elements 30 is six.

[0092] In another embodiment provided in the present application, referring to Figure 8 , the base 20 is provided with four convex columns 22; the four convex columns 22 are distributed in a quadrilateral about the center of the base 20; the rolling element 30 is provided on the outer side of the convex column 22 away from the center of the base 20.

[0093] Taking the square base 20 as an example, the four convex columns 22 are respectively arranged at the four side positions of the base 20; the four convex columns 22 are respectively arranged in front of, behind, on the left of, and on the right of the base 20. When the weighing support 10 is shifted in any direction of front, back, left and right, it can abut against the rolling element 30. Therefore, in the present embodiment, the four rolling elements 30 can reduce the friction when the weighing support 10 is shifted in each direction.

[0094] In one embodiment, the rolling element 30 is spherical, so that the rolling element 30 can roll in the horizontal direction in addition to the vertical direction, so that when the weighing support 10 rotates horizontally relative to the base 20, the rolling element 30 can still change the friction in the horizontal direction to dynamic friction, thereby reducing the impact of horizontal shifting on weighing.

[0095] The weighing base provided in the above embodiments of the present application can be applied to pet feeders, pet water dispensers, pet cages and other components that need to weigh objects.

[0096] In one embodiment provided in the present application, the weighing base is applied to a pet toilet; specifically, the pet toilet comprises a litter box, a weighing sensor 40 and the weighing base of any one of the above; the litter box is arranged on the weighing support 10 in the weighing base; the weighing sensor 40 is connected to the weighing support 10 and the base 20 in the weighing base.

[0097] In a further improved embodiment, the pet toilet further comprises an elastic pad 50 and a force receiving member 60; the weighing sensor 40 is arranged on the weighing support 10; the detection contact 41 of the weighing sensor 40 abuts against the force receiving member 60; the force receiving member 60 abuts against the base 20; the elastic pad 50 connects and seals the space between the weighing support 10 and the force receiving member 60. Wherein, the elastic pad 50 can be installed on the weighing support 10 through a connecting member 51; the connecting member 51 can be connected to the weighing support 10 through bolts or other parts.

[0098] Specifically, since the weighing sensor 40 measures weight through deformation, an activity space for the deformation of the weighing sensor 40 needs to be arranged between the weighing support 10 and the base 20.

[0099] The force receiving member 60 is a support structure applied between the weighing support 10 and the base 20. As shown in Figure 9 When the weighing sensor 40 is pressed by the weight of the weighing support 10 and the litter box, the detection contact of the weighing sensor 40 presses the force receiving member 60, and the reaction force of the force receiving member 60 will press the weighing sensor 40 to deform upward; in the above process, with the deformation of the weighing sensor 40, the weighing support 10 will gradually press downward, that is, the weighing support 10 will relatively move with the force receiving member 60.

[0100] Since the force receiving member 60 can move relative to the weighing support 10, a gap will inevitably exist between the force receiving member 60 and the weighing support 10. In the present embodiment, the gap between the force receiving member 60 and the weighing support 10 can be sealed by the elastic pad 50, so as to avoid the gap from entering sundries and affecting the weighing precision.

[0101] As an implementation, the force receiving member 60 can also be integrally arranged with the elastic pad 50, that is, the detection contact 41 of the weighing sensor 40 directly acts on the elastic pad 50.

[0102] In one embodiment, please refer to Figure 9 , the weighing support 10 is provided with a mounting groove 13; the weighing sensor 40 is arranged in the mounting groove 13; the elastic pad 50 and the force receiving member 60 seal the opening of the mounting groove 13.

[0103] By setting the mounting groove 13, the load sensor 40 and the force receiving member 60 can be integrated in the mounting groove 13, facilitating manufacturing and product modularization; meanwhile, after the elastic pad 50 and the force receiving member 60 seal the mounting groove 13, the mounting groove 13 can also protect other components.

[0104] It should be noted that the opening of the mounting groove 13 refers to the opening of the mounting groove 13 for loading the load sensor 40. Taking the example that the mounting groove 13 opens downward, the elastic pad 50 and the force receiving member 60 can be arranged below the mounting groove 13 and seal the opening of the mounting groove 13. In actual application, other areas of the mounting groove 13 can be provided with a through structure, for example, a wire hole can be arranged on the inner wall of the mounting groove 13 for the power line to pass through, so that the power line is electrically connected with the load sensor 40.

[0105] The above is the preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the foregoing examples or make equivalent replacements for some of the technical features, but any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A weighing base, characterized in that, The application relates to a weighing base, which comprises: a weighing support (10), a base (20) and a rolling member (30); the weighing support (10) is provided with a first side (11) in the horizontal direction; the base (20) is provided with a second side (21) facing the first side (11) in the horizontal direction; the rolling member (30) is arranged between the first side (11) and the second side (21); the rolling member (30) is used for abutting against the first side (11) and the second side (21); the rolling member (30) is arranged to be rollable in the vertical direction.

2. Weighing base according to claim 1, characterized in that The base (20) is provided with a convex column (22); the weighing support (10) is provided with a recess (12); the convex column (22) is clamped into the recess (12); the rolling member (30) is arranged between the outer side of the convex column (22) and the inner side of the recess (12).

3. Weighing base according to claim 2, characterized in that The rolling member (30) is arranged between the outer side of the convex column (22) in the first direction and the outer side in the second direction, and / or the rolling member (30) is arranged between the inner side of the recess (12) in the first direction and the inner side in the second direction; the first direction and the second direction intersect in the horizontal direction.

4. Weighing base according to claim 3, characterized in that The first direction and the second direction are perpendicular to each other.

5. The load cell of claim 3, wherein, The base (20) is provided with a plurality of convex columns (22); the plurality of convex columns (22) are arranged on the two sides of the base (20) in the first direction respectively; the rolling member (30) is arranged on the outer sides of the convex columns (22) on the two sides facing each other, or the rolling member (30) is arranged on the outer sides of the convex columns (22) on the two sides facing away from each other.

6. Weighing base according to claim 5, characterized in that The rolling member (30) is arranged on the two sides of the convex column (22) in the second direction.

7. The load cell of claim 3, wherein, The bottom of the base (20) is connected with a plurality of supporting legs (23); the convex column (22) is arranged on the top surface of the base (20), and the bottom surface of the base (20) forms a supporting leg clamping groove (24) corresponding to the position of the convex column (22); the supporting leg (23) is clamped into the supporting leg clamping groove (24) one by one.

8. The load cell of claim 2, wherein, The base (20) is provided with four convex columns (22); the four convex columns (22) are distributed in a quadrangle about the center of the base (20); the rolling member (30) is arranged on the outer side of the convex column (22) away from the center of the base (20).

9. Weighing base according to any one of claims 1 to 8, characterized in that The rolling member (30) is spherical.

10. A pet litter box, characterized by, The application further relates to a sand bin, a weighing sensor (40) and the weighing base according to any one of claims 1 to 9. The sand bin is arranged on the weighing support (10) in the weighing base; the weighing sensor (40) abuts against the weighing support (10) and the base (20) in the weighing base. Further comprising an elastic pad (50) and a force receiving member (60); 11. The pet toilet of claim 10, wherein, the weighing sensor (40) is arranged on the weighing support (10); the force receiving member (60) abuts against the detection contact (41) of the weighing sensor (40); the force receiving member (60) abuts against the base (20). ​ The elastic pad (50) connects the load bearing support (10) and the force receiving member (60), and seals the space between the load bearing support (10) and the force receiving member (60).

12. The pet toilet of claim 11, wherein, The load bearing support (10) is provided with a mounting groove (13); The load cell (40) is arranged in the mounting groove (13); The elastic pad (50) and the force receiving member (60) seal the opening of the mounting groove (13).

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