CN213606083U - Damping mechanism and toilet stool cover plate with same - Google Patents

Abstract

The utility model discloses a damping mechanism and have its stool pot apron, which comprises a housin, the apparatus further comprises an oil sealing sheet which is movably arranged in the casing and is used for opening and closing the connecting channel; the pivot is equipped with spacing portion, and at the in-process of the relative pivot activity of piston, the oil blanket can be with spacing cooperation in spacing portion and then make connecting channel keep the open mode to can realize that the apron does not have the damping before closing half way, half back way has damped effect, under the prerequisite that satisfies current damping effect, with higher speed the apron closure.

Description

Damping mechanism and toilet stool cover plate with same

Technical Field

The utility model relates to a damping mechanism to and adopt this damping mechanism's stool pot apron.

Background

The existing damper generally adopts a hydraulic structure, realizes a slow descending function through the oil passing gap difference of opening and closing, is mature in technology, stable and reliable, is widely applied to the overturning of a small flip cover, a gift box, a car window safety handle, a ground plug and the like, can effectively reduce the noise generated when a product is used, and improves the safety of the product.

The existing dampers applied to the toilet lid basically achieve no damping during the opening process of the lid and have a damping effect during the closing process, but the existing dampers have damping during the whole closing process of the lid, which results in a time-consuming closing process of the lid.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned problem, provide a damping mechanism, can realize that the apron that adopts this damping mechanism does not have the damping in the first half journey of closing, and latter half journey has the damping, under the prerequisite that satisfies current damping effect, the apron is closed with higher speed.

In order to achieve the above object, the utility model adopts the following technical scheme:

a damping mechanism comprises a shell, a rotating shaft and a piston, wherein the rotating shaft is in relative rotating fit with the shell, the piston is in transmission fit with the rotating shaft, the piston is movably mounted in the shell along the axial direction of the shell under the driving of the rotating shaft and divides an inner cavity of the shell into a first cavity and a second cavity along the axial direction of the shell, damping oil flows between the first cavity and the second cavity when the piston moves along the axial direction of the shell, a connecting channel for communicating the first cavity with the second cavity is arranged on the piston and/or the rotating shaft, and the damping mechanism further comprises an oil sealing sheet which is movably arranged in the shell and used for opening and closing the connecting channel; the rotating shaft is provided with a limiting part, and in the process that the piston moves relative to the rotating shaft, the oil sealing sheet can be in limiting fit with the limiting part so that the connecting channel is kept in an open state.

Preferably, the piston can be separated from the oil sealing sheet to open the connecting channel in the process of moving towards the first direction along the axial direction of the shell, the piston can be matched with the oil sealing sheet to close the connecting channel in the process of moving towards the second direction along the axial direction of the shell, and when the piston moves towards the first direction, the limiting part abuts against the oil sealing sheet to enable the oil sealing sheet and the piston to have an idle stroke so as to enable the connecting channel to keep an open state.

Preferably, when the piston moves in the first direction along the axial direction, the oil sealing sheet opens the connecting channel under the action of oil pressure; when the piston moves towards the second direction along the axial direction, the piston slides relative to the shell after the idle stroke, the piston is abutted with the oil sealing sheet to close the connecting channel, and/or the oil sealing sheet closes the connecting channel under the action of oil pressure.

Preferably, the oil sealing sheet is movably arranged on the piston along the axial direction of the shell, and when the piston moves towards a first direction along the axial direction of the shell, the oil sealing sheet moves towards a second direction along the axial direction of the shell relative to the piston, so that the connecting channel can be opened; when the piston moves in the second direction along the axial direction of the shell, the oil sealing sheet moves in the first direction relative to the piston, and the connecting channel can be closed.

Preferably, one side of the piston, which is away from the oil sealing sheet, defines the second chamber, one side of the oil sealing sheet, which is away from the piston, defines the first chamber, and during the movement of the piston in the second direction, the end surface of the oil sealing sheet closes the connecting channel when the end surface of the oil sealing sheet is attached to one side of the piston, which is close to the oil sealing sheet; and in the process that the piston moves along the first direction, the connecting channel is opened when the oil sealing sheet is far away from one side of the piston close to the oil sealing sheet.

Preferably, the oil sealing sheet is provided with an adjusting channel for adjusting the oil passing speed between the first cavity and the second cavity, and an adjusting piece is further arranged in the shell and is in relative rotating fit with the oil sealing sheet so as to adjust the flow area of the adjusting channel.

Preferably, the flow area of the adjusting channel gradually changes along the circumferential direction; when the adjusting piece rotates forwards along the circumferential direction of the shell, the flow area of the adjusting channel is gradually increased; when the adjusting piece rotates along the circumferential direction of the shell in the opposite direction, the flow area of the adjusting channel is gradually reduced.

Preferably, the adjusting member includes an adjusting cover and an adjusting valve seat, the adjusting valve seat is rotatably attached to the housing, the adjusting cover is circumferentially limited and axially movably limited on the adjusting valve seat, and the adjusting valve seat is rotated to drive the adjusting cover to rotate relative to the oil sealing sheet, so as to adjust the flow area of the adjusting passage.

Preferably, the adjusting cover can move along with the oil sealing sheet along the axial direction, and further keeps a joint state with the oil sealing sheet; the adjusting cover and the oil sealing sheet are kept attached through the following steps: an elastic piece for providing elastic force for the adjusting cover is arranged, and the adjusting cover is abutted against the oil sealing sheet under the action of the elastic piece; or the adjusting cover is propped against the oil sealing sheet under the action of oil pressure.

Preferably, the oil filter further comprises an oil passing channel connecting the first chamber and the second chamber; the gap between the piston and the rotating shaft forms the oil passing channel, or the gap between the piston and the shell forms the oil passing channel, or the rotating shaft/the shell is provided with the oil passing channel.

Preferably, the rotating shaft and the piston are in transmission fit through a cam structure, or in transmission fit through a thread structure, or in transmission fit through a worm and gear structure.

In addition, the utility model also provides a stool pot apron, it includes above-mentioned arbitrary damping mechanism.

The utility model has the advantages that:

(1) the utility model discloses a pivot is equipped with spacing portion the piston is relative the in-process of pivot activity, the oil blanket can with spacing cooperation and then make in position of spacing portion the interface channel keeps the open mode. Therefore, the toilet cover plate adopting the damping mechanism can realize the effect that the cover plate has no damping in the front half stroke and has damping in the rear half stroke when the cover plate is closed, and the cover plate is closed in an accelerating way on the premise of meeting the existing damping effect. (2) The oil sealing sheet of the utility model is provided with the adjusting cover which can rotate and move, and the oil sealing sheet and the adjusting cover rotate relatively to form the adjusting channel, so as to adjust the oil mass, thereby accurately controlling the closing details of the adjusting channel, saving labor in operation and adjusting accurately;

(3) the adjusting cover of the utility model can move along the axial direction along with the oil sealing sheet, and further keep a laminating state with the oil sealing sheet, so that the adjusting force of the adjusting piece directly acts on the oil sealing sheet, and the adjusting reliability and precision are better;

(4) the utility model discloses a set up the oil blanket between first cavity and second cavity to establish the regulation passageway at the oil blanket, through rotating the regulating part, make regulating part and oil blanket normal running fit and then adjust the flow area of regulation passageway relatively, realize the damping and adjust, practice thrift the axial space, be favorable to miniaturization, the compactification design of product.

(5) The utility model discloses a set up a pair ofly adjust the lid and provide the elastic component of elastic force, it is in to adjust the lid the effect of elastic component down the top support in the oil blanket piece, like this, when the piston suddenly during reverse toward the second direction motion toward the in-process of first direction motion, the closing that the oil blanket piece can be quick connect channel plays and in time realizes damped effect, and response speed is fast, adopts the damping mechanism of this scheme, can effectively prevent to open the problem that can't in time realize the damping effect under the condition of closing suddenly again after the apron.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic view of a three-dimensional assembly structure of a damping mechanism of the present invention;

fig. 2 is a schematic cross-sectional structural view of a damping mechanism according to the present invention;

fig. 3 is an exploded schematic view of a damping mechanism according to the present invention;

fig. 4 is a schematic view of an assembly structure of a rotating shaft and a piston of the damping mechanism of the present invention;

fig. 5 is a schematic view of a matching structure of a rotating shaft, a piston and a housing of the damping mechanism of the present invention;

FIG. 6 is a schematic view of a matching structure of an adjusting valve seat, an adjusting cover and an oil seal sheet of the damping mechanism of the present invention;

FIG. 7 is a schematic view of a structure of the damping mechanism of the present invention for matching the adjusting cover and the oil seal sheet;

fig. 8 is a sectional view of the relative position of the rotating shaft and the piston (the rotating shaft rotates 120 °) when the first chamber and the second chamber of the damping mechanism of the present invention are in a communicated state;

FIG. 9 is a schematic diagram of the relative positions of the rotating shaft and the housing in FIG. 8;

fig. 10 is a cross-sectional view of the relative position of the rotating shaft and the piston (the rotating shaft rotates 60 °) of the first chamber and the second chamber of the damping mechanism of the present invention in a closed state;

FIG. 11 is a schematic diagram showing the relative positions of the rotating shaft and the housing in FIG. 10;

fig. 12 is a cross-sectional view of the relative position of the rotating shaft and the piston (the rotating shaft rotates 0 °) of the first chamber and the second chamber of the damping mechanism of the present invention in a closed state;

FIG. 13 is a schematic view of the relative positions of the rotating shaft and the housing in FIG. 12;

FIG. 14-1 is a cross-sectional view of a damping mechanism according to the present invention with the adjustment passage fully open;

fig. 14-2 is a cross-sectional view of a damper mechanism according to the present invention with the adjustment passage partially open;

fig. 14-3 are cross-sectional views of a damper mechanism according to the present invention in a fully closed state of the adjustment passage;

in the figure:

10-a housing; 11-a first chamber; 12-a second chamber; 13-oil passing channel;

20-a rotating shaft; 21-an outer end; 22-a middle section; 23-an inner end portion;

30-a piston; 40-connecting channels; 50-oil sealing sheet; 51-a modulation channel;

60-an adjusting part; 61-adjusting the cover; 611-sector; 62-adjusting the valve seat; 63-elastic member (compression spring);

a-closed position; b-open position.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 3, a damping mechanism of the present invention includes a housing 10, a shaft 20, a piston 30, the rotating shaft 20 is in relative rotation fit with the shell 10, the piston 30 is in transmission fit with the rotating shaft 20, the piston 30 is movably attached in the housing 10 along the axial direction of the housing 10 under the driving of the rotating shaft 20 and divides the inner cavity of the housing 10 into a first chamber 11 and a second chamber 12 along the axial direction of the housing 10, the piston 30 causes damping oil to flow between the first chamber 11 and the second chamber 12 when moving axially along the housing 10, the piston 30 and/or the rotating shaft 20 are provided with a connecting passage 40 for communicating the first chamber 11 with the second chamber 12, and further comprise an oil seal sheet 50 movably arranged in the housing 10 for opening and closing the connecting passage 40; the rotating shaft 20 is provided with a limiting portion, and in the process that the piston 30 moves relative to the rotating shaft 20, the oil sealing sheet 50 can be in limiting fit with the limiting portion so as to keep the connecting channel 40 in an open state. Specifically, the limiting portion is a step arranged on the rotating shaft 20. Therefore, the toilet cover plate adopting the damping mechanism can realize the effect that the cover plate has no damping in the front half stroke and has damping in the rear half stroke when the cover plate is closed, and the cover plate is closed in an accelerating way on the premise of meeting the existing damping effect.

In this embodiment, the piston 30 can be separated from the oil seal sheet 50 to open the connection channel 40 in the process of moving in the first direction along the axial direction of the housing 10, the piston 30 can be matched with the oil seal sheet 50 to close the connection channel 40 in the process of moving in the second direction along the axial direction of the housing 10, and when the piston 30 moves in the first direction, the limiting portion abuts against the oil seal sheet 50, so that an idle stroke is formed between the oil seal sheet 50 and the piston 30, and the connection channel 40 is kept in an open state. The idle stroke is the maximum clearance between the end surface of the oil seal piece 50 and the end surface of the piston 30 close to the oil seal piece 50.

Wherein, when the piston 30 moves in the first direction along the axial direction, the oil seal piece 50 opens the connecting passage 40 under the action of oil pressure; when the piston 30 moves in the second direction along the axial direction, after the piston 30 slides relative to the housing 10 by the idle stroke, the piston 30 abuts against the oil seal piece 50 to close the connecting passage 40, and/or the oil seal piece 50 closes the connecting passage 40 under the action of oil pressure.

Specifically, as shown in fig. 4 and 5, the oil seal 50 is disposed between the rotating shaft 20 and the piston 30. The rotating shaft 20 and the piston 30 are in transmission fit through a cam structure, or in transmission fit through a thread structure, or in transmission fit through a worm and gear structure.

In this embodiment, the oil-passing channel 13 is further included to connect the first chamber 11 and the second chamber 12; the gap between the piston 30 and the rotating shaft 20 forms the oil passing channel 13, or the gap between the piston 30 and the housing 10 forms the oil passing channel 13, or the rotating shaft 20/the housing 10 is provided with the oil passing channel 13; the oil passage 13 is one or more tapered grooves.

The rotating shaft 20 and the piston 30 of the present embodiment are connected through a thread structure, specifically, the thread structure may be formed by multiple threads, the multiple threads (multiple threads) are formed by two or more axially equidistantly distributed spiral threads, and the present embodiment employs double threads such as rectangular threads or trapezoidal threads. The rotary motion of the rotary shaft 20 is converted into the axial reciprocating motion of the piston 30 through a threaded connection, and the rotary shaft 20 and the piston 30 form a threaded pair connection. The oil sealing sheet 50 is assembled and jointed with a regulating cover 61 which can rotate and move, the oil sealing sheet 50 and the regulating cover 61 rotate relatively to form an oil passing channel 13, so that the size of the regulating channel 51 is regulated, and the closing time of the regulating channel is accurately controlled; through the oil sealing piece 50 with adjust the lid 61 cooperation, but constitute an axial displacement's oil sealing and oil passing mechanism, during the laminating, slowly oil permeability when realizing the high pressure, oil passing fast during the separation.

The oil sealing sheet 50 is provided with an adjusting passage 51 for adjusting the oil passing speed between the first chamber 11 and the second chamber 12, an adjusting piece 60 is further arranged in the shell 10, and the adjusting piece 60 is in relative rotation fit with the oil sealing sheet 50 so as to adjust the flow area of the adjusting passage 51.

As shown in fig. 6 and 7, the adjusting member 60 includes an adjusting cover 61 and an adjusting valve seat 62, the adjusting valve seat 62 is rotatably attached to the housing 10, the adjusting cover 61 is circumferentially limited and axially movably limited on the adjusting valve seat 62, and the flow area of the adjusting passage 51 is adjusted by rotating the adjusting valve seat 62 to rotate the adjusting cover 61 relative to the oil seal 50. The flow area of the adjusting channel 51 is gradually changed along the circumferential direction; when the adjusting piece 60 rotates in the circumferential direction of the housing 10, the flow area of the adjusting channel 51 is gradually increased; when the adjusting element 60 rotates in the circumferential direction of the housing 10 in the opposite direction, the flow area of the adjusting channel 51 becomes smaller. The adjusting cover 61 is provided with a sector 611 corresponding to the adjusting channel 51, as shown in fig. 14-3, when the sector 611 completely covers the adjusting channel 51, the adjusting channel 51 is closed; as shown in fig. 14-2, when the sector 611 partially blocks the regulation passage 51, the regulation passage 51 is partially opened; as shown in fig. 14-1, when the sector 611 is circumferentially displaced from the regulation passage 51, the regulation passage 51 is fully opened and the flow area reaches the maximum.

As shown in fig. 3 and 6, the adjusting cover 61 can move along with the oil seal sheet 50 in the axial direction, and further keep a joint state with the oil seal sheet 50; the adjusting cover 61 is attached to the oil sealing sheet 50 by: an elastic member 63 is arranged between the adjusting valve seat 62 and the adjusting cover 61 in an abutting manner, and the adjusting cover 61 abuts against the oil sealing sheet 50 under the action of the elastic member 63; alternatively, the adjusting cover 61 is pressed against the oil sealing sheet 50 under the action of oil pressure. In this embodiment, the elastic member 63 is a compression spring. Through setting up right it provides the elastic component of elastic force to adjust the lid, it is in to adjust the lid the top supports under the effect of elastic component in the oil blanket piece, like this, when the piston moves toward the second direction in-process suddenly backward direction of first direction motion, the closing that the oil blanket piece can be quick connect channel plays in time and realizes damped effect, and response speed is fast, adopts the damping mechanism of this scheme, can effectively prevent to open the problem that can't in time realize the damping effect under the condition of suddenly closing again after the apron.

As shown in fig. 8, the oil seal 50 is movably disposed on the piston 30 along the axial direction of the housing 10, and when the piston 30 moves in the axial direction of the housing 10 toward the first direction, the oil seal 50 moves in the axial direction of the housing 10 toward the second direction relative to the piston 30, so that the connection passage 40 can be opened; when the piston 30 moves in the second direction along the axial direction of the housing 10, the oil seal 50 moves in the first direction relative to the piston 30, so that the connection passage 40 can be closed.

In this embodiment, a side of the piston 30 facing away from the oil seal 50 defines the second chamber 12, a side of the oil seal 50 facing away from the piston 30 defines the first chamber 11, and during the movement of the piston 30 in the second direction, an end surface of the oil seal 50 is engaged with a side of the piston 30 close to the oil seal 50 to close the connecting passage 40; during the movement of the piston 30 in the first direction, the oil seal 50 is away from the side of the piston 30 close to the oil seal 50 to open the connecting passage 40.

As shown in fig. 2 and fig. 3, the rotating shaft 20 includes an outer end portion 21, an inner end portion 23, and a middle section portion 22, the outer end portion 21 extends out of the housing 10, the middle section portion 22 is provided with a telescopic cam structure or a thread structure and is in transmission fit with the piston 30, and the inner end portion 23 is in sleeve fit with the oil sealing sheet 50, the adjusting cover 61, and the adjusting valve seat 62 in sequence.

As shown in fig. 8 and 9, when the rotating shaft 20 rotates in a first circumferential direction, for example, clockwise by 120 °, the piston 30 is driven to move in a first axial direction (for example, axially outward) by the transmission cooperation between the threaded section of the rotating shaft 20 and the piston 30, and at this time, the oil-sealing piece 50 is in limited cooperation with the rotating shaft, so as to keep opening the connecting passage 40, and the oil in the second chamber 12 rapidly flows to the first chamber 11.

As shown in fig. 10 to 13, when the rotating shaft 20 rotates in the second circumferential direction, for example, counterclockwise, the piston 30 is driven to move in the second axial direction (for example, axially inward) by the transmission cooperation between the threaded section of the rotating shaft 20 and the piston 30, at this time, after the piston 30 slides relative to the housing 10 by the idle stroke, the piston 30 abuts against the oil-sealing sheet 50 to close the connecting passage 40, and/or the oil-sealing sheet 50 closes the connecting passage 40 under the action of oil pressure, so that the oil in the first chamber 11 slowly flows to the second chamber 12, thereby achieving the damping effect.

In addition, the utility model also provides a stool pot apron, it includes above-mentioned arbitrary damping mechanism. The damping mechanism comprises two and is symmetrically arranged at two sides of the rotating end of the toilet cover plate. The toilet cover plate includes an upper cover and a seat ring, one of the housing 10 of the damping mechanism and the rotating shaft 20 (outer end portion 21) is connected to the upper cover, and the other is connected to the seat ring.

The specific working process is as follows:

the cover plate is closed in the first half: referring to fig. 8 and 10, the state where the cover is opened 120 degrees with respect to the toilet seat is the initial state (see fig. 8). The closing cover plate drives the rotating shaft 20 to rotate in the forward direction, the piston 30 is further driven to move towards the second direction along the axial direction of the shell 10 for the idle stroke, in the process that the piston 30 moves for the idle stroke, the oil sealing sheet 50 can be in limit fit with the limiting part to enable the connecting channel 40 to keep an open state, the damping oil flows to the second chamber 12 from the first chamber 11 through the connecting channel 40, the oil passing speed of the cover plate in the first half closing process is high, no damping is realized, and the cover plate is closed quickly.

The cover plate is closed in the latter half: referring to fig. 10 and 12, after the rotating shaft continues to rotate in the forward direction, after the piston 30 slides relative to the housing 10 by the idle stroke, the piston 30 abuts against the oil seal 50 to close the connecting passage 40, and/or the oil seal 50 closes the connecting passage 40 under the action of oil pressure. The oil speed is slow after the cover plate is closed, damping is achieved, the cover plate slowly falls, and noise is reduced.

The cover plate opening process comprises the following steps: referring to fig. 12 and 8, the rotating shaft 20 rotates in the opposite direction to drive the piston 30 to move in the first direction along the axial direction of the housing 10, the oil sealing plate 50 opens the connecting channel 40 under the action of the damping oil, the oil passing speed between the first chamber 11 and the second chamber 12 is increased, the cover plate is opened without damping, and a user can open the cover plate easily.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (12)

1. A damping mechanism comprises a shell, a rotating shaft and a piston, wherein the rotating shaft is in relative rotating fit with the shell, the piston is in transmission fit with the rotating shaft, the piston is movably mounted in the shell along the axial direction of the shell under the driving of the rotating shaft and divides an inner cavity of the shell into a first cavity and a second cavity along the axial direction of the shell, damping oil flows between the first cavity and the second cavity when the piston moves along the axial direction of the shell, a connecting channel for communicating the first cavity with the second cavity is arranged on the piston and/or the rotating shaft, and the damping mechanism further comprises an oil sealing sheet which is movably arranged in the shell and used for opening and closing the connecting channel; the oil seal structure is characterized in that the rotating shaft is provided with a limiting part, and in the process that the piston moves relative to the rotating shaft, the oil seal piece can be in limiting fit with the limiting part so as to enable the connecting channel to be kept in an open state.

2. The damping mechanism of claim 1, wherein: the piston can be separated from the oil sealing sheet along the axial direction of the shell to open the connecting channel in the process of moving towards the first direction, the piston can be matched with the oil sealing sheet to close the connecting channel along the axial direction of the shell to move towards the second direction, and when the piston moves towards the first direction, the limiting part abuts against the oil sealing sheet to enable the oil sealing sheet to have an idle stroke between the oil sealing sheet and the piston so that the connecting channel is kept in an open state.

3. The damping mechanism of claim 2, wherein: when the piston moves towards the first direction along the axial direction, the oil sealing sheet opens the connecting channel under the action of oil pressure; when the piston moves towards the second direction along the axial direction, the piston slides relative to the shell after the idle stroke, the piston is abutted with the oil sealing sheet to close the connecting channel, and/or the oil sealing sheet closes the connecting channel under the action of oil pressure.

4. The damping mechanism of claim 1, wherein: the oil sealing sheet is movably arranged on the piston along the axial direction of the shell, and when the piston moves towards a first direction along the axial direction of the shell, the oil sealing sheet moves towards a second direction of the axial direction of the shell relative to the piston, so that the connecting channel can be opened; when the piston moves in the second direction along the axial direction of the shell, the oil sealing sheet moves in the first direction relative to the piston, and the connecting channel can be closed.

5. The damping mechanism of claim 4, wherein: the side of the piston, which is far away from the oil sealing sheet, defines the second chamber, the side of the oil sealing sheet, which is far away from the piston, defines the first chamber, and in the process that the piston moves along the second direction, the connecting channel is closed when the end surface of the oil sealing sheet is attached to the side, which is close to the oil sealing sheet, of the piston; and in the process that the piston moves along the first direction, the connecting channel is opened when the oil sealing sheet is far away from one side of the piston close to the oil sealing sheet.

6. The damping mechanism of claim 1, wherein: the oil sealing sheet is provided with an adjusting channel for adjusting the oil passing speed between the first cavity and the second cavity, an adjusting piece is further arranged in the shell, and the adjusting piece is in relative rotating fit with the oil sealing sheet so as to adjust the flow area of the adjusting channel.

7. The damping mechanism of claim 6, wherein: the flow area of the adjusting channel gradually changes along the circumferential direction; when the adjusting piece rotates forwards along the circumferential direction of the shell, the flow area of the adjusting channel is gradually increased; when the adjusting piece rotates along the circumferential direction of the shell in the opposite direction, the flow area of the adjusting channel is gradually reduced.

8. The damping mechanism of claim 6, wherein: the adjusting piece comprises an adjusting cover and an adjusting valve seat, the adjusting valve seat is rotatably mounted on the shell, the adjusting cover is circumferentially limited and axially movably limited on the adjusting valve seat, and the adjusting cover is driven to rotate relative to the oil sealing sheet by rotating the adjusting valve seat so as to adjust the flow area of the adjusting channel.

9. The damping mechanism of claim 8, wherein: the adjusting cover can move along with the oil sealing sheet along the axial direction, and further keeps a joint state with the oil sealing sheet; when the adjusting cover is kept attached to the oil sealing sheet, the oil sealing sheet passes through the following steps: an elastic piece for providing elastic force for the adjusting cover is arranged, and the adjusting cover is abutted against the oil sealing sheet under the action of the elastic piece; or the adjusting cover is propped against the oil sealing sheet under the action of oil pressure.

10. The damping mechanism according to any one of claims 1 to 9, characterized in that: the oil passing channel is connected with the first chamber and the second chamber; the gap between the piston and the rotating shaft forms the oil passing channel, or the gap between the piston and the shell forms the oil passing channel, or the rotating shaft/the shell is provided with the oil passing channel.

11. The damping mechanism according to any one of claims 1 to 9, characterized in that: the rotating shaft is in transmission fit with the piston through a cam structure, or in transmission fit through a thread structure, or in transmission fit through a worm and gear structure.

12. A toilet cover characterized by comprising the damping mechanism of any one of claims 1 to 11.

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