CN212465841U

CN212465841U - a rotary buffer

Info

Publication number: CN212465841U
Application number: CN202021830381.3U
Authority: CN
Inventors: 兰花
Original assignee: Xiamen Xiaojixi Technology Co ltd
Current assignee: Unique Xiamen Smart Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-02-05
Anticipated expiration: 2030-08-27

Abstract

The utility model provides a rotary buffer, comprising: a shaft sleeve, a rotating shaft, an oil-passing space, a blade and an adjusting member, the blade is rotatably matched with the end of the rotating shaft, and the side of the blade is provided with fins, the fins It cooperates with the rotor plate to switch between a closed state and an open state to allow the damping oil to flow, and a limiting structure is provided between the vane and the rotating shaft. The application adopts the cooperation of the fin and the rotor plate to switch between the closed state and the open state, so as to drive the damping oil to flow in the damped state or the non-damping state. The overall thickness of the machine increases the angle at which the shaft can be rotated; thereby achieving a larger opening angle of the toilet cover. The adjustment piece can cooperate with the blade structure to realize the adjustment of the slow fall time of the buffer. At the same time, the damping oil circulation channel formed by the way of staggering the vane and the rotor plate is larger, which can realize the rapid return of the oil circuit.

Description

Rotary buffer

Technical Field

The utility model relates to a hydraulic damper technical field that squatting pan apron was used particularly, relates to a rotatory buffer.

Background

The toilet bowl generally includes a ceramic seat, a hinge device fixed to the ceramic seat, and a cover plate hinged to the hinge device. The toilet bowl needs to open the cover plate in the using process, and the cover plate is closed when the toilet bowl is not used. At present, a toilet bowl is provided with a damper on a hinge device, and a cover plate is connected to the damper; when the cover plate falls by taking the hinge device as a rotation center, the damper can enable the cover plate to slowly fall, so that the cover plate can be prevented from falling on the ceramic seat.

In the prior art, the damper applied to the cover plate consists of an axis, a shaft sleeve and a damping part positioned between the axis and the shaft sleeve, damping oil is positioned in a cavity formed by the rotating shaft and the shaft sleeve, and the forward slow descending and reverse oil passing effects of the damper are realized by controlling a damping oil flowing gap between the shaft sleeve and the rotating shaft. However, in the damper in the prior art, the two rotary wing plates of the rotating shaft are respectively sleeved with the oil passing valve plate to realize the one-way control of the flow of the damping oil, the thickness of the rotary wing plate is large, so that the rotating angle of the rotating shaft is smaller under the limit of the oil separation rib on the inner wall of the shaft sleeve, namely the opening angle of the cover plate is smaller, and the oil passing channel of the oil passing valve plate is smaller during the non-damping rotation, so that the damper is not beneficial to realizing the rapid flow of the damping oil. In view of this, the utility model has been particularly proposed after studying the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a damper aims at improving prior art, and pivot turned angle is less so that the less problem of angle is opened to the apron.

In order to solve the above technical problem, the utility model provides a rotary buffer, include:

the oil-separating device comprises a shaft sleeve, a bearing seat and a bearing seat, wherein an inner cavity for loading damping oil is arranged in the shaft sleeve, and an oil-separating rib is arranged on the wall of the inner cavity of the shaft sleeve; the rotating shaft is rotatably arranged in the inner cavity of the shaft sleeve and comprises a main body section provided with a rotor plate; an oil passing space through which the damping oil flows between the pressure chamber and the back pressure chamber; the buffer further comprises:

the blade is rotatably matched on the rotating shaft under the driving of the rotating shaft, a wing piece corresponding to the rotary wing plate is arranged on the blade, and the wing piece and the rotary wing plate are matched and switched between a closed state and an open state so as to enable the damping oil to flow.

And when the wing panel and the rotor wing plate are in an opening state, the limiting structure limits the opening angle of the wing panel and the rotor wing plate so that the damping oil flows between the wing panel and the rotor wing plate.

In the preferred embodiment of the present invention:

as a one-step improvement, the improved structure further comprises an adjusting piece, wherein an adjusting hole is formed in the bottom of the shaft sleeve, the adjusting piece is installed in the adjusting hole and forms a first oil passing groove communicated with the inner cavity of the shaft sleeve with the blades, and the adjusting piece moves up and down relative to the adjusting hole to adjust the size of the first oil passing groove.

As a one-step improvement, an oil passing gap communicated with the inner cavity of the shaft sleeve is formed between the tail end of the blade and the adjusting hole, and the first oil passing groove is communicated with the inner cavity of the shaft sleeve through the oil passing gap.

As a further improvement, the tail end of the blade is provided with a rotating column which is positioned in the adjusting hole, the top of the adjusting piece is provided with an installation groove, and the rotating column is rotatably arranged on the installation groove.

As a one-step improvement, the adjusting piece is an adjusting knob in threaded fit with the adjusting hole and comprises a threaded section and a sealing section, and a sealing piece matched with the adjusting hole is arranged on the sealing section.

As a further improvement, when the wing panel and the rotor wing panel are in a closed state, the damping oil is driven to flow integrally through the cooperation of the inclined surfaces.

As a further improvement, the blade is movable along the central axis of the shaft.

As a further improvement, the tail end of the rotating shaft is provided with a rotating column, and the blade is provided with a containing groove for containing the rotating column; the limiting structure comprises a limiting notch positioned on the accommodating groove, and the rotor plate is limited in the limiting notch by the notch to rotate.

As a further improvement, the oil passing space comprises a second oil passing groove arranged on the outer side wall of the shaft core of the rotating shaft and the outer side wall of the shaft core of the blade, and the second oil passing groove is formed in one side of the opening direction of the rotary wing plate and the wing plate, so that after the rotating shaft rotates to a non-damping state relative to the shaft sleeve along the opening direction, damping oil on two sides of the oil separating rib flows through the second oil passing groove;

and the second oil passing groove has a smaller damping oil flowing space along the direction far away from the rotor wing plate and the wing plate.

As a step improvement, the concave depth of the second oil passing groove becomes gradually shallow along the direction far away from the rotor plate and the wing.

By adopting the technical scheme, the utility model discloses can gain following technological effect:

this application adopts fin and rotor plate cooperation to be in closed state drive damping oil and flows or stagger mutually and be in the open mode and open damping oil circulation passageway, structure about being between this rotor plate and the fin, provides a brand-new one-way oily structure of crossing to change the one-way oily structure of crossing of one-way oily valve of crossing of tradition adoption cover on the rotor plate, and then reduce the whole thickness of rotor plate part, promote the pivot can pivoted angle. Thereby achieving a greater toilet lid opening angle. Meanwhile, a damping oil circulation channel formed in a mode that the wing pieces and the rotor plate are staggered and are in an open state is larger, and quick oil return of an oil way can be realized.

Furthermore, still come through the regulating part with the regulation hole of axle sleeve bottom the bottom of blade forms the first oil groove of crossing of adjustable, through the size regulation to first oil groove of crossing the size of oil mass of can controlling unit interval, and then when rotatory buffer is in the damping state, control damping oil flow velocity and then control the damping size of buffer to realize the slow-falling time of buffer and adjust. The adjusting piece is installed in the adjusting hole, is sensitive to adjustment and is simple in structure.

Furthermore, in the conventional rotary damper, the upper end and the lower end of the rotor plate of the rotating shaft must be attached to the upper cavity wall and the lower cavity wall of the inner cavity of the shaft sleeve, so that the requirement on the height precision of the rotor plate and the inner cavity of the shaft sleeve is high during manufacturing and welding, and in the application, the wing plate is matched with the inclined surface of the rotor plate through the wing plate, and the blades can move along the central axis of the rotating shaft; thereby the buffer gets into the damping state, and rotor plate belt moving blade rotates, and pushes down the blade through damping oil's reaction force and inclined plane sliding fit on axle sleeve inner chamber diapire. Therefore, but mutual position, the position at the axle sleeve inner chamber automatically regulated of rotor wing board and fin in this application, and then to the high accuracy requirement reduction of rotor wing board and fin, the high accuracy requirement that simultaneously to main part of the axle section and blade also reduces to reduce manufacturing cost, the manufacturing degree of difficulty.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a rotary damper according to an embodiment of the present invention;

FIG. 2 is a schematic view of the exploded structure of FIG. 1;

FIG. 3 is an exploded view of the shaft sleeve, the vane and the adjusting member according to the embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of FIG. 1;

FIG. 5 is a schematic view of the adjusting member of FIG. 4 adjusted to define a clearance for oil flow;

FIG. 6 is a schematic view of a portion of the structure of FIG. 1;

FIG. 7 is a top cross-sectional view of the bushing and vane of the condition of FIG. 6;

FIG. 8 is a schematic view of the blade of FIG. 7 in an initial state;

fig. 9 is an exploded view of the shaft and the blade.

The labels in the figure are:

the oil-gas separation device comprises a shaft sleeve 1, an oil separation rib 11, a fourth oil passing groove 12, an adjusting hole 13, a rotating shaft 2, a rotary wing plate 21, a second oil passing groove 22, a third oil passing groove 23, a rotating column 24 and a rotating ring 25; the blade 3, the wing panel 31, the rotating column 32, the accommodating groove 33 and the limiting notch 34; the adjusting piece 4, the annular side wall mounting groove 41, the L-shaped notch part 5, the pressing ring 61, the sealing ring 62 and the gasket 63; a pressure receiving chamber 71, a back pressure chamber 72, and a first oil passing groove 8.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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 should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

referring to fig. 1 to 9, the present embodiment provides a rotary damper, which includes a shaft sleeve 1, a rotating shaft 2, an oil passing space, a vane 3 and a limiting structure.

An inner cavity for loading damping oil is arranged in the shaft sleeve 1, and two oil separation ribs 11 are arranged on the side wall of the inner cavity of the shaft sleeve 1. The rotating shaft 2 is rotatably arranged in the inner cavity of the shaft sleeve 1, and the rotating shaft 2 comprises a main body section provided with two rotary wing plates 21 and a connecting section protruding out of the shaft sleeve 1. In other embodiments, the connecting portion of the rotating shaft 2 may also be a connecting slot recessed in the main body section.

This main part section can carry out along opening direction or closed direction rotation in the inner chamber of axle sleeve 1, can be equivalent to axle sleeve 1 relatively along clockwise rotation or two not equidirectional rotations of anticlockwise rotation to the pterygoid lamina 21 of pivot 2 can be spacing by oil removal muscle 11 after rotating certain angle.

The oil passing space serves to provide a passage through which the damping oil flows between the pressure chamber 71 and the back pressure chamber 72. Referring to fig. 6 and 7, in the present embodiment, the pressure receiving cavity 71 is a cavity located between the counterclockwise side of the rotor plate 21 and the oil isolating rib 11 when rotating counterclockwise, and receives the pressure of the damping oil driven by the rotor plate 21 but only allows the damping oil to flow out at a small flow rate; the back pressure chamber 72 is a chamber between the counterclockwise side of the rotor plate 21 and the oil barrier 11, and receives damping oil from the pressure chamber 71, so that the rotation of the rotary shaft 2 can be continued.

It should be understood that the concept of the pressure chamber 71 and the back pressure chamber 72 in the damper buffer is not described herein in detail.

The blade 3 is rotatably fitted on the rotating shaft 2 and is driven by the rotating shaft 2. The blades 3 have fins 31 on both sides corresponding to the rotor plates, and the fins 31 and the rotor plates 21 cooperate to switch between a closed state and an open state to flow the damping oil.

In other embodiments, the oil separation rib 11 on the inner cavity wall of the shaft sleeve 1 may have one, the rotor plate 21 on the rotating shaft 2 may have one, and the vane 31 of the blade 3 may have one. Or the oil separation rib 11 on the inner cavity wall of the shaft sleeve 1 has three, the rotor plate 21 on the rotating shaft 2 has three, the fins 31 of the blades 3 have three, etc., which is not limited herein.

In the initial state, this corresponds to the state in which the fin 31 and the rotor plate 21 are restored. The wing pieces 31 are attached to the rotor plate 21, that is, the wing pieces 31 are closed with the rotor plate 21, so that there is no gap between the wing pieces 31 and the rotor plate 21 through which damping oil passes, or there is only a small gap between the wing pieces 31 and the rotor plate 21 through which damping oil passes. The damping force to avoid the damping state is too small.

When the rotating shaft 2 rotates along the opening direction relative to the shaft sleeve 1, please refer to fig. 7, which is equivalent to that the rotating shaft 2 rotates clockwise relative to the shaft sleeve 1 in this embodiment. The rotating shaft 2 rotates relative to the blade 3 to shift the wing panel 31 and the rotor panel 21, so that the wing panel 31 and the rotor panel 21 are switched to an open state, and the damper enters a non-damping state. In the non-damping state, a large amount of damping oil can pass between the wing 31 and the rotor plate 21 after the wing 31 and the rotor plate 21 are misaligned, and thus a force generated by damping is small.

In other embodiments, the rotating shaft 2 rotates in the opening direction relative to the shaft sleeve 1, or the rotating shaft 2 rotates counterclockwise relative to the shaft sleeve 1, which is not limited herein.

The present embodiment further includes a limiting structure, when the wing panel 31 and the rotor plate 21 are in the open state, the limiting structure will limit the wing panel 31 and the rotor plate 21 within a specific opening angle range, so that the damping oil flows through the staggered channels of the wing panel 31 and the rotor plate 21 quickly; and through the limitation of a specific opening angle, when the wing panel 31 is staggered to the specific opening angle with the rotor panel 21, the limiting structure can limit the synchronous rotation of the blade 3 along with the rotating shaft 2.

That is, the limiting structure will limit the wing 31 to rotate only a certain angle relative to the rotor plate 21, and when the angle is exceeded, the rotating shaft 2 will continue to rotate in the original direction, and will drive the wing 31 to rotate together. The rotating shaft 2 is at the limit position of rotation when rotating relative to the shaft sleeve 1 until the rotor plate 21 is abutted against the oil separation rib 11.

In the embodiment, the opening angle is 30 degrees, so when the rotary damper is applied to a toilet lid, the gap between the swing plate 21 and the wing 31 is larger between 0 degree and 30 degrees of the flip-up lid, the lifting is easier, and when the angle is 30 degrees, the oil passing channel between the swing plate 21 and the wing 31 is at the maximum, so that the toilet lid can continue to open with easy force.

In other embodiments, the limiting structure may also limit the rotation of the wing 31 to only 15 degrees, 20 degrees, 25 degrees, 28 degrees, 33 degrees, 35 degrees, 40 degrees, etc. relative to the rotor plate 21, and no specific numerical limitation is made on the basis of the staggering of the wing 31 and the rotor plate 21 and the resetting and fitting of the wing 31 and the rotor plate 21 during the rotation. The person skilled in the art will be able to determine the specific values according to the actual requirements.

When the rotating shaft 2 rotates along the closing direction relative to the shaft sleeve 1, the rotating shaft 2 rotates relative to the blades 3 to enable the rotor wing plate 21 and the wing pieces 31 to reset, and the buffer enters a damping state. This is because when the vanes 31 and the rotor plate 21 are returned, the vanes 31 and the rotor plate 21 are in a closed state, and the damping oil cannot pass through or can pass through the vanes 31 and the rotor plate 21 only in a small amount, thereby generating a large resistance.

This application adopts fin 31 and rotor plate 21 phase to cooperate and drive damping oil together and flow or stagger mutually and open damping oil circulation passageway's fin 31, structure about being between this rotor plate 21 and the fin 31, a brand-new one-way oily structure of crossing is provided, thereby change the tradition and adopt the structure of establishing one-way oily valve of crossing of cover on rotor plate 21, thereby reduce the whole thickness of rotor plate 21 part, promote 2 pivoted angles of pivot, realize bigger toilet cover plate and open the angle.

Specifically, in practice, other versions of the damper for the toilet can only rotate to about 110 degrees due to the limitation of the thickness of the rotary wing plate 21, and the rotary buffer in the form of the blade 3 can rotate to a cover opening angle of 130 degrees or more, so that the effect of increasing the cover opening angle is remarkable, and the use function is not influenced.

Meanwhile, the damping oil flow channel is larger and the oil way can be rapidly reflowed in a mode that the fin 31 is staggered with the rotor plate 21 and is switched to the open state.

Referring to fig. 2, fig. 3, fig. 6 and fig. 9, in the present embodiment, when the wing panel 31 and the rotor plate 21 are in the closed state, the damping oil is driven to flow integrally by the inclined surface. The inclined surface of the fin 31 and the rotor plate 21 opens the damping oil flow path more quickly, so that the cover plate can be easily lifted.

And the cooperation of inclined plane mutually can promote 2 relative axle sleeves 1 of pivot when rotatory along the closed direction, can promote the leakproofness when fin 31 and the laminating of rotor plate 21 to and the convenience is when the damping state, the stress surface of damping oil is on rotor plate 21 and fin this moment, and rotor plate 21 directly drives fin 31 through the cooperation of inclined plane and rotates, thereby increases blade 3's life.

Further, the blade is movable along a central axis of the shaft. That is, the blade 3 is slidably engaged with the rotating shaft 2 along the central axis direction of the rotating shaft 2, and the upper portion of the fin 31 is obliquely engaged with the lower portion of the swing plate 21, wherein the oblique surface of the fin 31 is located on the closing direction side, and the oblique surface of the swing plate 21 is located on the opening direction side.

In the traditional rotary buffer, the upper end and the lower end of a rotary wing plate 21 of a rotating shaft 2 must be attached to the upper cavity wall and the lower cavity wall of an inner cavity of a shaft sleeve 1, so that the requirement on the height precision of the rotary wing plate 21 and the inner cavity of the shaft sleeve 1 is high during manufacturing and welding, in the application, a wing plate 31 is matched with the rotary wing plate 21 in an inclined plane, and the inclined plane of the wing plate 31 is positioned on one side in the closing direction; therefore, the buffer enters a damping state, the rotor wing plate 21 drives the blades 3 to rotate, and the blades 3 are pressed down to the bottom wall of the inner cavity of the shaft sleeve 1 through the inclined plane sliding fit under the action of the reverse pressure of the damping oil.

Therefore, the mutual positions of the rotor wing plate 21 and the wing plate 31 and the position of the inner cavity of the shaft sleeve can be automatically adjusted, the height precision requirements on the rotor wing plate 21 and the wing plate 31 are reduced, and meanwhile, the height precision requirements on the main body section of the rotating shaft 2 and the blades 3 are also reduced, so that the manufacturing cost and the manufacturing difficulty are reduced.

Further, the upper part of the fin 31 is provided with an L-shaped notch 5, and the inclined plane of the fin 31 is the vertical plane of the L-shaped notch 5; the lower part of the rotor plate 21 is provided with an L-shaped notch part 5, and the inclined surface of the rotor plate 21 is the vertical surface of the L-shaped notch part 5. That is, there is also a horizontal plane through the bottom end of the vertical plane.

Further, the horizontal plane of the wing 31 has a certain clearance from the horizontal plane of the rotor plate 21, so that the damping oil flow path between the wing 31 and the rotor plate 21 is opened when the rotary shaft 2 is initially rotated clockwise.

In other embodiments, the inclined surface of the wing 31 and the vertical cross section of the inclined surface of the rotor plate 21 form a right triangle, so that the rotating shaft 2 can open the damping oil flow channel between the wing 31 and the rotor plate 21 when initially rotating in the opening direction relative to the shaft sleeve 1.

Referring to fig. 2 and 3, and fig. 4 and 5, in the present embodiment, an adjusting member 4 is further included.

The bottom of axle sleeve 1 is equipped with regulation hole 13, regulating part 4 install in regulation hole 13, and with blade 3 forms the first oil groove 8 of crossing with axle sleeve 1 inner chamber intercommunication, regulating part 4 is through relative regulating hole 13 reciprocates and adjusts the size of first oil groove 8 of crossing.

When the vanes 31 and the rotor plate 21 drive the damping oil to flow, the damping oil can flow in different cavities in the shaft sleeve 1 through the first oil passing groove 8, so that the resistance of the rotary damper is reduced, and particularly the resistance of the rotary damper in a damping state is reduced. Therefore, the adjusting member 4 can control the resistance of the rotary damper in the damping state by adjusting the size of the first oil passing groove 8, thereby realizing the slow-down time adjustment of the damper.

The first oil passing groove 8 is communicated with the inner cavity of the shaft sleeve 1 in various ways, for example, an oil passing channel communicated with the adjusting hole 13 is formed at the bottom of the inner cavity of the shaft sleeve 1.

In this embodiment, an oil passing gap communicating with the inner cavity of the shaft sleeve 1 is formed between the tail end of the vane 3 and the adjusting hole 13, so that the first oil passing groove 8 is communicated with the inner cavity of the shaft sleeve 1 through the oil passing gap. Therefore, the first oil passing groove 8 can be communicated with the inner cavity of the shaft sleeve 1 through simple structural design.

The specific oil passing clearance can be formed in a way that the diameter of the shaft core of the blade 3 is smaller than the inner diameter of the adjusting hole 13, and the fin 31 of the blade 3 abuts against the bottom of the inner cavity of the shaft sleeve 1, so that the oil passing clearance which can be directly communicated with the inner cavity of the shaft sleeve 1 is formed.

The structural design of the adjusting piece 4 is various, so as to control the size of the first oil passing groove 8 formed with the blade 3. For example, the tail end of the blade 3 is provided with a cross groove or a groove shaped like a Chinese character 'mi' to communicate with each chamber channel, the adjusting piece 4 is provided with a corresponding cross protrusion or a protrusion shaped like a Chinese character 'mi', and can move up and down relative to the shaft sleeve 1 to adjust the size of the oil passing channel of the first oil passing groove 8 formed at the tail end of the blade 3, and the adjusting piece 4 can rotate along with the tail end of the blade 3.

In this embodiment, the end of the blade 3 has a rotating column 32 located in the adjusting hole 13, the top of the adjusting member 4 is provided with an installation groove 41, and the rotating column 31 is rotatably arranged on the installation groove 41. Thereby control regulating part 4 and adjust hole 13 relatively and reciprocate relatively axle sleeve 1 promptly, can fill into different sizes with first oil groove 8, and then realize the regulation of damping oil flow passage size.

The mode that the top through setting up blade 3 end for rotating post 32 and regulating part 4 is mounting groove 41 for regulating part 4 need not to follow blade 3 and rotates, reduces the frictional resistance interference between regulating part 4 and the axle sleeve 1, makes the adjustable damping scope of rotatory buffer bigger, and it is more convenient to use.

The adjusting element 4 can be moved up and down relative to the adjusting hole 13, i.e. relative to the sleeve 1, in different ways, such as by interference fit of the adjusting element 4 with the sleeve 1.

In this embodiment, the adjusting member 4 is an adjusting knob which is in threaded fit with the adjusting hole 13, so that the adjustment is simpler and more convenient.

Referring to fig. 2, in order to prevent damping oil from flowing out from between the shaft sleeve 1 and the adjusting member 4, the damping oil seal includes a threaded section and a sealing section, and a sealing member fitted with the adjusting hole is disposed on the sealing section. In this embodiment, a sealing ring is provided on the side wall of the sealing section of the adjusting piece 4.

The blade 3 is rotatably engaged with the end of the shaft 2, and the connection manner that the blade can be slidably engaged with the end of the shaft 2 along the axial direction is various, for example, the end of the shaft 2 has a circular groove, and the blade 3 has a circular protrusion corresponding to the groove.

In this embodiment, the end of the rotating shaft 2 has a rotating column 24 with a diameter smaller than the shaft core, and the vane 3 has a receiving groove 33 for receiving the rotating column 24. The outer diameter of the shaft core of the blade 3 is the same as that of the shaft core of the rotating shaft 2, so that the oil separation rib 11 is convenient to arrange.

The rotor plate 21 extends to the upper portion of the rotary column 24, and the limiting structure is a limiting notch 34 located on the upper side wall of the accommodating groove 33, so that the rotor plate 21 is limited in the limiting notch 34 to rotate.

Further, the rotary column 24 has two steps with decreasing diameters, the inner wall of the receiving groove 33 corresponds to the rotary column 24, and the rotary wing plate 21 extends to the first step.

Referring to fig. 9, the oil passing space includes a second oil passing groove 22 disposed on the outer side wall of the shaft core of the rotating shaft 2 and the outer side wall of the shaft core of the vane 3, and the second oil passing groove 22 is opened on one side of the opening direction of each of the rotor wing plate 21 and the vane 31, which is also the clockwise side in this embodiment, so that after the rotating shaft 2 rotates clockwise relative to the shaft sleeve 1 by a certain angle, the damping oil on both sides of the oil separating rib 11 flows freely through the second oil passing groove; thereby making the rotary damper easier after rotating clockwise to a certain angle.

Preferably, after the rotating shaft 2 rotates clockwise 55-85 degrees relative to the shaft sleeve 1, the second oil passing groove 22 becomes a flow channel of the damping oil on both sides of the oil separating rib 11 until the rotating shaft 2 rotates clockwise to a limit position relative to the shaft sleeve 1.

In a preferred embodiment, after the rotating shaft 2 rotates by 70 degrees clockwise relative to the shaft sleeve 1, the second oil passing groove 22 becomes a flow passage of the damping oil at both sides of the oil separating rib 11. Assume that the limit angle of the limit structure is 30 degrees in this embodiment. Therefore, when the toilet cover plate is opened, the toilet cover plate is easier to lift within the range of the initial 30 degrees; a certain light looseness is kept between 30 degrees and 70 degrees, and when the looseness is over 70 degrees, the second oil passing groove 22 is simultaneously acted, so that the looseness is easier and more labor-saving to open.

When the toilet lid is closed, the angle of the downward reverse rotation reaches the maximum limit of the limit structure, which is 30 degrees in this embodiment, and the wing 31 and the rotary wing plate 21 are restored to the damping state. The damping oil can pass through the second oil passing groove 22 and the oil passing gap and pass through, thereby offsetting the gravity of the toilet lid plate which is partially turned down. When the cover plate and the barrel body are turned downwards at 70 degrees, the second oil passing groove 22 does not provide a damping oil flow channel on two sides of the oil separating rib 11 any more, the damping force of the rotary buffer is further increased, the gravity of the downward turning of the toilet cover plate is further counteracted, and the downward turning of the toilet cover plate is controlled better.

Further, the second oil passing groove 22 is far from the direction of the rotor plate 21 and the fin 31, and the damping oil flowing space of the second oil passing groove 22 becomes smaller. That is, when the rotary shaft 2 rotates in the opening direction with respect to the sleeve 1, the larger the opening angle of the cover plate, the larger the passage through which the damping oil flows to the respective chambers. When the rotating shaft 2 rotates along the closing direction relative to the shaft sleeve 1, that is, when the toilet lid is turned down, the damping oil flow channels on the two sides of the oil separation rib 11 provided by the second oil passing groove 22 are smaller and smaller until the damping oil flow channels disappear, so that the effect of gradually offsetting more gravity of the toilet lid turning down is realized, and the process of controlling the toilet lid turning down by a user is smoother.

In a specific implementation, the depth of the recess of the second oil passing groove becomes gradually shallower along a direction away from the rotor plate and the vane, so that the control of the smaller flowing space of the damping oil is realized.

In other preferred embodiments, the oil passing space further includes a third oil passing groove 23 and a fourth oil passing groove 12, and the third oil passing groove 23 is located on the lower surface of the rotating ring 25 of the rotating shaft 2 and is disposed on the same side as the second oil passing groove 22; the fourth oil passing groove 12 is formed in the bottom of the inner cavity of the shaft sleeve 1 and is formed in the anticlockwise side of each oil separating rib 11. By providing the third oil sumps 23 and the fourth oil sumps 12 at different positions of the rotary damper, a function of increasing the effect which the second oil sumps 22 are intended to achieve is performed.

In other embodiments, the bottom of the inner cavity of the shaft sleeve 1 is provided with an oil discharge groove, and the oil discharge groove is used for forming a damping oil flow passage communicated with the fins 31 when the rotating shaft 2 rotates in a damping state. Thereby assisting the oil clearance control of the maximum damping amount of the damping state.

In this embodiment, the shaft sleeve 1 further includes a pressing ring 61, a sealing ring 62 and a gasket 63, the pressing ring 61 is used for sealing the main body segment of the rotating shaft 2 in the shaft sleeve 1, and the sealing ring 62 and the gasket 63 are located below the pressing ring 61 and above the rotating ring 25 of the rotating shaft 2. In other embodiments, the main body section of the shaft 2 may be sealed by other structures.

The utility model also provides a closestool, including staving, apron and as above rotatory buffer, the apron passes through rotatory buffer articulate in on the staving.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary damper comprising:

the oil-separating device comprises a shaft sleeve, a bearing seat and a bearing seat, wherein an inner cavity for loading damping oil is arranged in the shaft sleeve, and an oil-separating rib is arranged on the wall of the inner cavity of the shaft sleeve;

the rotating shaft is rotatably arranged in the inner cavity of the shaft sleeve and comprises a main body section provided with a rotor plate;

an oil passing space through which the damping oil flows between the pressure chamber and the back pressure chamber; characterized in that the buffer further comprises:

the blade is rotatably matched on the rotating shaft under the driving of the rotating shaft, a wing panel corresponding to the rotary wing panel is arranged on the blade, and the wing panel and the rotary wing panel are matched and switched between a closed state and an open state so as to enable the damping oil to flow;

2. The rotary damper according to claim 1, further comprising an adjustment member,

the bottom of the shaft sleeve is provided with an adjusting hole, the adjusting piece is installed in the adjusting hole and forms a first oil passing groove communicated with the inner cavity of the shaft sleeve with the blades, and the adjusting piece can move up and down relative to the adjusting hole to adjust the size of the first oil passing groove.

3. The rotary damper according to claim 2, wherein an oil passing gap communicating with the inner cavity of the sleeve is formed between the end of the vane and the adjusting hole, and the first oil passing groove communicates with the inner cavity of the sleeve through the oil passing gap.

4. The rotary damper according to claim 2 or 3,

the tail end of the blade is provided with a rotating column which is positioned in the adjusting hole, the top of the adjusting piece is provided with an installation groove, and the rotating column is rotatably arranged on the installation groove.

5. The rotary damper according to claim 4, wherein said adjustment member is an adjustment knob threadably engaged with said adjustment aperture and including a threaded section and a sealing section, said sealing section having a seal engaged with said adjustment aperture.

6. The rotary damper according to claim 1, wherein the vane and the rotor plate cooperate to integrally drive the flow of the damping oil in a closed state.

7. The rotary damper according to claim 6, wherein the vane is movable along a central axis of the spindle.

8. The rotary damper according to claim 1, wherein the rotary shaft has a rotary post at an end thereof, and the vane has a receiving groove for receiving the rotary post;

the limiting structure comprises a limiting notch positioned on the accommodating groove, and the rotor plate is limited in the limiting notch to rotate by the limiting notch.

9. The rotary damper according to claim 1, wherein the oil passing space includes a second oil passing groove provided on an outer side wall of the shaft core of the rotary shaft and an outer side wall of the shaft core of the vane, and the second oil passing groove is opened on one side of the opening direction of the rotary wing plate and the vane, so that the damping oil on both sides of the oil separating rib flows through the second oil passing groove after the rotary shaft rotates to a non-damping state in the opening direction relative to the shaft sleeve;

10. The rotary damper according to claim 9, wherein the depression depth of the second oil passing groove becomes gradually shallower in a direction away from the rotor plate and the vane.