Damping device and cover and toilet bowl applying the same

Abstract

This utility model discloses a damping device, and discloses a cover plate and a toilet with the damping device. The damping device includes: a first rib inside the housing; a rotating assembly that can rotate in both directions through the housing, the rotating assembly including a shaft, the shaft having two radially protruding second ribs, the shaft, the second ribs and the inner wall of the housing defining a damping cavity for filling damping grease, the first ribs dividing the damping cavity into a first cavity and a second cavity, the side wall of the shaft having a circumferential surface that gradually changes distance from the central axis of the shaft, the circumferential surface and the first ribs forming a gap; by utilizing the oil gap that changes size with the rotation of the rotating assembly, the rotating assembly can generate a gradually increasing buffering effect when rotating forward, so that it can eventually stop stably, avoiding the shaking of external components connected and used with it when "stopping", and at the same time, it can smoothly and quickly reset when rotating in reverse.

Description

Technical Field

[0001] This utility model relates to the field of damping buffer technology, and in particular to a damping device and a cover plate and toilet seat using the same. Background Technology

[0002] The automatic lid-opening function of current smart toilets uses an internal motor to drive a hinged shaft connecting the seat lid. However, most smart toilets with motor-driven lid opening have a significant problem: when the lid rotates upwards around the hinge to 92°, the hinge reaches its mechanical limit and stops, leaving the lid at a 92° angle to the horizontal. Upon stopping, inertia causes structural collisions, resulting in the lid wobbling. This wobbling also causes the lid to collide with the tank or other components, generating noise and affecting the user experience. Utility Model Content

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a damping device.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] This utility model also proposes a cover plate and a toilet with the above-mentioned damping device.

[0006] The damping device according to a first aspect embodiment of the present invention includes:

[0007] A hollow shell, wherein the interior of the shell is provided with a first rib;

[0008] A rotating assembly, rotatable in both directions, is inserted through the housing. The rotating assembly includes a shaft portion with two radially protruding second ribs. A damping cavity for filling damping grease is defined between the shaft portion, the second ribs, and the inner wall of the housing. The first ribs divide the damping cavity into a first cavity and a second cavity. A circumferential surface with a gradually changing distance from the central axis of the shaft portion is provided on the side wall of the shaft portion. A gap can be formed between the circumferential surface and the first ribs to constitute an oil passage for connecting the first cavity and the second cavity.

[0009] When the rotating assembly rotates clockwise relative to the housing, the first cavity enlarges, the second cavity shrinks, and the oil passage gap shrinks.

[0010] When the rotating assembly reverses relative to the housing, the first cavity shrinks, the second cavity expands, and the oil passage gap increases.

[0011] The damping device according to the embodiment of the present utility model has at least the following beneficial effects: by utilizing the oil gap that changes in size with the rotation of the rotating component, the rotating component can generate a gradually increasing buffering effect when rotating forward, so that it can eventually stop stably, avoiding the shaking of external components connected and used with it when "stopping", and at the same time, it can smoothly and quickly reset when reversing.

[0012] According to some embodiments of the present invention, when the rotating component rotates clockwise relative to the housing, the circumferential surface can move to abut against the first rib.

[0013] According to some embodiments of the present invention, the rotating assembly further includes a stop block, which is mounted on the second rib and abuts against the inner wall of the housing. The stop block, the rotating shaft, the second rib, and the inner wall of the housing cooperate to define the damping cavity. The stop block can slide relative to the housing as the rotating assembly rotates.

[0014] According to some embodiments of the present invention, the housing is symmetrically provided with two first ribs inside, and two second ribs are symmetrically arranged along the same radial direction on the rotating shaft. Two symmetrical damping cavities are defined between the housing and the rotating assembly. Each of the first ribs is paired and placed in the damping cavity to separate each damping cavity into a first cavity and a second cavity.

[0015] According to some embodiments of the present invention, an oil flow channel is defined between the second rib and the stop block, the oil flow channel being located between the first cavity of one damping cavity and the second cavity of the other damping cavity, and the second rib being movable relative to the stop block between a first position and a second position; wherein...

[0016] When the rotating assembly reverses relative to the housing, the second rib moves to the second position relative to the stop block, and the oil passage connects the first cavity of one damping cavity and the second cavity of the other damping cavity;

[0017] When the rotating assembly rotates clockwise relative to the housing, the second rib moves relative to the stop block to the first position, and the oil flow channel is blocked.

[0018] According to some embodiments of the present invention, the stop block includes a first side plate, a second side plate, a third side plate, and a fourth side plate. One side of the first side plate abuts against the inner wall of the housing. The second and third side plates are distributed along the axial direction of the rotating shaft on the side of the first side plate away from the inner wall of the housing. The second and third side plates have sliding grooves formed along the relative movement direction of the second rib relative to the stop block. The two ends of the sliding grooves are a first end and a second end, respectively. The fourth side plate extends from the side of the first side plate away from the inner wall of the housing and connects between the first ends of the two sliding grooves. The second rib slides on the sliding groove, and the oil flow channel is formed between the second rib, the first side plate, and the fourth side plate.

[0019] When the second rib moves relative to the stop block to the first position, the second rib abuts against the fourth side plate to block the oil flow channel;

[0020] When the second rib moves to the second position relative to the stop block, the second rib abuts against the second end, and the oil flow channel is opened.

[0021] According to some embodiments of the present invention, the fourth side plate is provided with a plurality of reinforcing ribs on the side away from the first end, the reinforcing ribs are connected to the first side plate, and each of the reinforcing ribs is distributed sequentially along the axial direction of the rotating shaft.

[0022] According to some embodiments of the present invention, the inner cavity of the housing is cylindrical, and the outer wall of the first side plate is an arc-shaped surface that matches the shape of the inner cavity side plate of the housing.

[0023] According to a second aspect of the present invention, a cover plate includes a flip cover, a motor, and a damping device, wherein the rotating assembly is connected to the flip cover, and the motor drives the flip cover to flip.

[0024] The cover plate according to the embodiment of the present utility model has at least the following beneficial effects: it can stably stop when the cover is flipped up, avoiding shaking.

[0025] A toilet according to a third aspect of the present invention includes a damping device or a cover.

[0026] The toilet according to the present invention has at least the following beneficial effects: the lid can be stably stopped when it is flipped up, avoiding shaking.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the damping device.

[0030] Figure 2 This is an exploded view of the damping device.

[0031] Figure 3 This is a schematic diagram of the internal structure of the shell;

[0032] Figure 4 This is a partial structural diagram of the rotating assembly;

[0033] Figure 5 yes Figure 1 Sectional view along direction A;

[0034] Figure 6 yes Figure 5 Another usage status diagram;

[0035] Figure 7 This is a schematic diagram of the block's structure;

[0036] Figure 8 This is a structural diagram of the cover plate.

[0037] Reference numerals: housing 100; cylinder 101; end cap 102; inner cavity 110; first rib 120; damping cavity 130; first cavity 131; second cavity 132; oil passage gap 133; rotating assembly 200; rotating shaft 210; circumferential surface 211; central axis 220; second rib 230; stop block 300; oil passage 301; first side plate 310; second side plate 320; third side plate 330; fourth side plate 340; slide groove 350; first end 351; second end 352; reinforcing rib 360; flip cover 400; motor 500. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0039] This utility model relates to a damping device, including a housing 100 and a rotating assembly 200.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the housing 100 can be composed of a hollow cylindrical tube 101 and an end cap 102 installed at the end of the tube. The interior of the housing 100 is hollow, forming an inner cavity 110, which is a sealed cavity. A first rib 120 is provided in the inner cavity 110 of the housing 100. The first rib 120 protrudes radially from the side wall of the inner cavity 110 and extends axially along the housing 100. A rotating assembly 200 is mounted on the housing 100. The rotating assembly 200 can rotate clockwise and counterclockwise relative to the housing 100. In the illustrated direction, clockwise rotation of the rotating assembly 200 is clockwise rotation, and counterclockwise rotation is counterclockwise rotation. A portion of the rotating assembly 200 is located outside the housing 100. The rotating assembly 200 includes a rotating shaft portion 210, which extends coaxially into the inner cavity 110 of the housing 100. The rotating shaft portion 210 is provided with two second ribs 230, which protrude radially from the side wall of the rotating shaft portion 210 and extend axially along the rotating shaft portion 210. The second ribs 230 can abut against the side wall of the inner cavity 110, or abut against the side wall of the inner cavity 110 through other components such as a stop 300, so that a fan-shaped damping cavity 130 is formed between the two second ribs 230 and the inner cavity 110 of the housing 100. The damping cavity 130 is used to store damping grease. The first rib 120 is located in the damping cavity 130, dividing the damping cavity 130 into a first cavity 131 and a second cavity 132, which are filled with damping grease. The volume of the first cavity 131 and the volume of the second cavity 132 change in opposite directions as the rotating assembly 200 rotates relative to the housing 100. The sum of the volumes of the first cavity 131 and the second cavity 132 remains constant. When the first cavity 131 increases, the second cavity 132 decreases; when the first cavity 131 decreases, the second cavity 132 increases. The side wall of the rotating shaft portion 210 has a circumferential surface 211 whose distance from the central axis 220 of the rotating shaft portion 210 gradually changes. In the direction shown in the figure, the distance between the circumferential surface 211 and the central axis 220 of the rotating shaft portion 210 gradually decreases in a clockwise direction. The circumferential surface 211 moves closer to or further away from the first rib 120 as the rotating shaft portion 210 rotates. A gap can be formed between the first rib 120 and the peripheral surface 211, forming an oil passage gap 133, which connects the first cavity 131 and the second cavity 132. The distance between the central axis 220 of the rotating shaft 210 and the first rib 120 remains constant. When the rotating shaft 210 rotates, the gap between the peripheral surface 211 and the first rib 120 gradually increases or decreases, causing the size of the oil passage gap 133 to change as the rotating assembly 200 rotates relative to the housing 100. In use, the rotating assembly 200 is used in conjunction with an external component that needs to rotate. In this embodiment, as... Figure 8As shown, the damping device is applied to a toilet seat or toilet bowl, or a toilet seat with a damping device is applied to a toilet bowl. The toilet seat also includes a motor 500 and a flip cover 400. The rotating assembly 200 of the damping device is connected to the flip cover 400 and can be coaxially connected to the hinge or pivot of the flip cover 400. The motor 500 is connected to the flip cover 400 and drives the flip cover 400 to flip up and down. The rotating assembly 200 rotates synchronously with the flip cover 400. Figure 6 As shown, when the flip cover 400 flips upward, it correspondingly drives the rotating component 200 to rotate clockwise, while the housing 100 remains stationary. The first cavity 131 gradually enlarges, and the second cavity 132 gradually shrinks. When the second cavity 132 shrinks, the damping grease inside it is squeezed into the first cavity 131 through the oil passage gap 133, and at the same time, the oil passage gap 133 gradually decreases. As the oil passage gap 133 gradually decreases, it hinders the flow of damping grease, thereby producing a gradually increasing damping effect on the rotating component 200 and the flip cover 400. The limit position of the flip cover 400 flipping upward can be set to 92° with the horizontal plane. When the flip cover 400 flips upward to 89° with the horizontal plane, the oil passage gap 133 is close to its minimum value. For example, the minimum value of the oil passage gap 133 can be set to 1mm, 0.5mm, or it can be set so that the circumferential surface 211 can move to abut against the first rib 120, at which point the oil passage gap 133 is 0mm. At this point, the flip cover 400 encounters significant resistance. As it rotates from 89° to 92°, the resistance continues to increase, gradually increasing the cushioning effect on the flipping of the cover. This ultimately allows the flip cover 400 to slowly flip to its limit position, effectively preventing it from wobbling back and forth when it reaches its final stop. Figure 7 As shown, when the flip cover 400 flips downwards, it correspondingly drives the rotating component 200 to reverse, while the housing 100 remains stationary. The first cavity 131 gradually shrinks, and the second cavity 132 gradually expands. When the first cavity 131 shrinks, the damping grease inside it is squeezed into the first cavity 131 through the oil passage gap 133, while the oil passage gap 133 gradually expands. As the oil passage gap 133 gradually expands, the damping grease in the first cavity 131 can flow into the second cavity 132 more quickly, allowing the rotating component 200 to quickly reverse, and the flip cover 400 to flip downwards and close smoothly.

[0041] In one embodiment, such as Figure 2 and Figure 5As shown, the rotating assembly 200 also includes a stop 300. The stop 300 can be mounted on the second rib 230 by sleeve, snap-fit, etc., and abuts against the inner wall of the housing 100. The stop 300, the rotating shaft 210, the second rib 230, and the inner wall of the housing 100 cooperate to define a damping cavity 130. The stop 300 can slide relative to the housing 100 as the rotating assembly 200 rotates. The second rib 230 and the inner wall of the housing 100 are connected by the stop 300, which increases the contact area with the inner wall of the housing 100, ensuring the stability of the stop 300 when rotating with the rotating assembly 200. At the same time, the stop 300 can slide smoothly along the inner wall of the housing 100 under the lubrication of damping grease, and ensures that the damping grease flows between the first cavity 131 and the second cavity 132.

[0042] Among them, such as Figure 5 As shown, the interior of the housing 100 is symmetrically provided with two first ribs 120, and the inner cavity 110 of the housing 100 is cylindrical. The two first ribs 120 are arranged opposite each other in the same radial direction in the inner cavity 110. Two second ribs 230 are symmetrically arranged in the same radial direction on the rotating shaft 210, and the two sides of the sidewall of the rotating shaft 210 are respectively circumferential surfaces 211. Two symmetrical damping cavities 130 are defined between the housing 100 and the rotating assembly 200. The two damping cavities 130 are symmetrical semicircles. Each first rib 120 is paired and placed in the damping cavity 130 to divide each damping cavity 130 into a first cavity 131 and a second cavity 132. Around the central axis 220 of the rotating shaft 210, the first cavity 131, the second cavity 132, the first cavity 131, and the second cavity 132 are distributed sequentially, that is, the first cavity 131 of one damping cavity 130 and the second cavity 132 of another damping cavity 130 are arranged adjacent to each other. Damping grease between the first cavity 131 and the second cavity 132 belonging to the same damping cavity 130 flows through the corresponding oil passage 133. When the rotating assembly 200 rotates, the two first cavities 131 expand or contract synchronously, and the two second cavities 132 expand or contract synchronously. By utilizing the two damping cavities 130, the two second ribs 230 are subjected to force synchronously, ensuring the stability of the rotating assembly 200 during rotation.

[0043] Furthermore, such as Figure 5 As shown, an oil flow channel 301 is defined between the second rib 230 and the stop block 300. The oil flow channel 301 is located between a first cavity 131 of one damping cavity 130 and a second cavity 132 of another damping cavity 130. The second rib 230 is movable relative to the stop block 300 between a first position and a second position. Wherein, as Figure 6As shown, when the rotating assembly 200 reverses relative to the housing 100, the second rib 230 moves to the second position relative to the stop block 300, and the oil passage 301 connects the first cavity 131 of one damping cavity 130 and the second cavity 132 of another damping cavity 130. That is, when the rotating assembly 200 reverses, the damping grease between the first cavity 131 and the second cavity 132 in the same damping cavity 130 flows through the oil passage 133, and the damping grease between the first cavity 131 and the second cavity 132 in different damping cavities 130 flows through the oil passage 301, so that the first cavity 131, the second cavity 132, the first cavity 131, and the second cavity 132 in the housing 100 are sequentially connected, ensuring that the rotating assembly 200 experiences low damping during reverse rotation and can rotate smoothly. Figure 5 As shown, when the rotating component 200 rotates forward relative to the housing 100, the second rib 230 moves to the first position relative to the stop block 300. At this time, the second rib 230 and the stop block 300 cooperate to block the oil flow channel 301. The first cavity 131 and the second cavity 132 of the different damping cavities 130 are not connected to each other. The gradually decreasing oil gap 133 achieves the buffering effect during forward rotation.

[0044] Specifically, such as Figure 7 As shown, the stop 300 includes a first side plate 310, a second side plate 320, a third side plate 330, and a fourth side plate 340. One side of the first side plate 310 abuts against the inner wall of the housing 100. The second side plate 320 and the third side plate 330 are distributed along the axial direction of the pivot 210 on the side of the first side plate 310 away from the inner wall of the housing 100. The second side plate 320 and the third side plate 330 have grooves 350 formed on them along the relative movement direction of the second rib 230 relative to the stop 300, that is, the grooves 350 are arranged around the central axis 220 of the pivot 210. The two ends of the grooves 350 are the first end 351 and the second end 352, respectively. The fourth side plate 340 extends from the side of the first side plate 310 away from the inner wall of the housing 100 and connects the first ends 351 of the two grooves 350. The second rib 230 slides onto the groove 350, and the second rib 230 applies a radial force to the stop block 300 through the groove 350 to abut the stop block 300 against the side wall of the inner cavity 110 of the housing 100. There is a certain distance between the second rib 230 and the first side plate 310. An oil flow channel 301 is formed between the second rib 230, the first side plate 310, and the fourth side plate 340. Wherein, as... Figure 5 As shown, when the second rib 230 moves to the first position relative to the stop block 300, the second rib 230 abuts against the fourth side plate 340, thereby blocking the oil flow channel 301. As the rotating shaft 210 continues to rotate forward, the second rib 230 drags the stop block 300 relative to the housing 100 to rotate synchronously via the fourth side plate 340. Figure 6As shown, when the second rib 230 moves to the second position relative to the stop block 300, the second rib 230 abuts against the second end 352, the second rib 230 moves away from the fourth side plate 340, and the oil flow channel 301 is opened. As the rotating shaft 210 continues to reverse, the second rib 230 drags the stop block 300 to rotate synchronously relative to the housing 100 through the second end 352.

[0045] Furthermore, such as Figure 7 As shown, the fourth side plate 340 has several reinforcing ribs 360 on the side away from the first end 351, and the reinforcing ribs 360 are located in the second cavity 132. The reinforcing ribs 360 are connected to the first side plate 310, and each reinforcing rib 360 is distributed sequentially along the axial direction of the rotating shaft portion 210. The reinforcing ribs 360 are used to improve the structural strength of the fourth side plate 340. The inner cavity 110 of the housing 100 is cylindrical, and the outer side wall of the first side plate 310 is arc-shaped to match the shape of the side plate of the inner cavity 110 of the housing 100, increasing the contact area between the first side plate 310 and the inner cavity 110 and ensuring the stability of the stop block 300 relative to the housing 100.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A damping device, characterized in that, include: A hollow shell (100) has a first rib (120) inside the shell (100). A rotating assembly (200) is rotatably mounted on the housing (100) in both forward and reverse directions. The rotating assembly (200) includes a rotating shaft (210) with two radially protruding second ribs (230). A damping cavity (130) for filling damping grease is defined between the rotating shaft (210), the second ribs (230), and the inner wall of the housing (100). The first rib (120) divides the damping cavity (130) into a first cavity (131) and a second cavity (132). A circumferential surface (211) with a gradually changing distance from the central axis (220) of the rotating shaft (210) is provided on the side wall of the rotating shaft (210). A gap can be formed between the circumferential surface (211) and the first rib (120) to form an oil passage gap (133) for connecting the first cavity (131) and the second cavity (132). When the rotating assembly (200) rotates clockwise relative to the housing (100), the first cavity (131) enlarges, the second cavity (132) shrinks, and the oil passage gap (133) shrinks; When the rotating assembly (200) is reversed relative to the housing (100), the first cavity (131) shrinks, the second cavity (132) enlarges, and the oil passage gap (133) enlarges.

2. The damping device according to claim 1, characterized in that: When the rotating assembly (200) rotates clockwise relative to the housing (100), the circumferential surface (211) can move to abut against the first rib (120).

3. The damping device according to claim 1, characterized in that: The rotating assembly (200) further includes a stop (300) which is mounted on the second rib (230) and abuts against the inner wall of the housing (100). The stop (300), the rotating shaft (210), the second rib (230) and the inner wall of the housing (100) cooperate to define the damping cavity (130). The stop (300) can slide relative to the housing (100) as the rotating assembly (200) rotates.

4. The damping device according to claim 3, characterized in that: The housing (100) has two first ribs (120) symmetrically arranged inside, and two second ribs (230) are symmetrically arranged on the rotating shaft (210) along the same radial direction. The housing (100) and the rotating assembly (200) define two symmetrical damping cavities (130). Each of the first ribs (120) is paired and placed in the damping cavity (130) to separate each of the damping cavities (130) into the first cavity (131) and the second cavity (132).

5. The damping device according to claim 4, characterized in that: An oil flow channel (301) is defined between the second rib (230) and the stop (300), the oil flow channel (301) being located between the first cavity (131) of one damping cavity (130) and the second cavity (132) of the other damping cavity (130), the second rib (230) being movable relative to the stop (300) between a first position and a second position; wherein, When the rotating assembly (200) reverses relative to the housing (100), the second rib (230) moves to the second position relative to the stop (300), and the oil passage (301) connects the first cavity (131) of one damping cavity (130) and the second cavity (132) of the other damping cavity (130); When the rotating assembly (200) rotates forward relative to the housing (100), the second rib (230) moves relative to the stop (300) to the first position, and the oil passage (301) is blocked.

6. The damping device according to claim 5, characterized in that: The stop (300) includes a first side plate (310), a second side plate (320), a third side plate (330), and a fourth side plate (340). One side of the first side plate (310) abuts against the inner wall of the housing (100). The second side plate (320) and the third side plate (330) are distributed along the axial direction of the pivot (210) on the side of the first side plate (310) away from the inner wall of the housing (100). The second side plate (320) and the third side plate (330) are positioned relative to the stop (300) along the second rib (230). A chute (350) is provided in the direction of movement, with a first end (351) and a second end (352) at its two ends. A fourth side plate (340) extends from the side of the first side plate (310) away from the inner wall of the housing (100) and connects between the first ends (351) of the two chute (350). A second rib (230) slides on the chute (350), and an oil passage (301) is formed between the second rib (230), the first side plate (310), and the fourth side plate (340). When the second rib (230) moves relative to the stop (300) to the first position, the second rib (230) abuts against the fourth side plate (340) to block the oil passage (301). When the second rib (230) moves to the second position relative to the stop (300), the second rib (230) abuts against the second end (352), and the oil passage (301) is opened.

7. The damping device according to claim 6, characterized in that: The fourth side plate (340) is provided with a plurality of reinforcing ribs (360) on the side away from the first end (351). The reinforcing ribs (360) are connected to the first side plate (310), and each of the reinforcing ribs (360) is distributed sequentially along the axial direction of the rotating shaft (210).

8. The damping device according to claim 6, characterized in that: The inner cavity (110) of the housing (100) is cylindrical, and the outer side wall of the first side plate (310) is arc-shaped to match the shape of the side plate of the inner cavity (110) of the housing (100).

9. A cover plate; characterized in that: The device includes a flip cover (400), a motor (500), and a damping device as described in any one of claims 1 to 8, wherein the rotating assembly (200) is connected to the flip cover (400), and the motor (500) drives the flip cover (400) to flip.

10. A toilet seat, characterized in that: Includes the damping device as described in any one of claims 1 to 8 or the cover plate as described in claim 9.

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