CN111779776A

CN111779776A - Extremely-simple hydraulic rotary buffer

Info

Publication number: CN111779776A
Application number: CN202010782776.9A
Authority: CN
Inventors: 王治恭
Original assignee: Xiamen Jingyi Industry And Trade Co ltd
Current assignee: Xiamen Jingyi Industry And Trade Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2020-10-16

Abstract

The invention discloses a very simple hydraulic rotary buffer which is only provided with a shaft sleeve, a rotating shaft, a gland and a sealing ring, wherein the shaft sleeve is symmetrically provided with two separation ribs connected with the bottom surface of a cavity; the convex ring and the inner shaft section of the rotating shaft are sleeved in the oil cavity, two convex strips are symmetrically arranged on the inner shaft section, each convex strip is provided with an elastically flexible oil-flexible wing, and the oil-flexible wings are spaced from the wall of the oil cavity or elastically pressed and contacted with the arc-shaped table section; the gland is fixedly pressed with the oil cavity opening, the convex ring is sleeved in a step hole of the inner end surface of the gland, the inner side surface of the convex ring is flush with the inner end surface and contacts with the top surface of the spacer rib, and the flexible oil wing is in contact sliding fit with the inner end surface; the shaft sleeve and the gland are sealed by a sealing ring, and the flexible oil wing, the oil cavity wall and the arc-shaped platform section form a one-way oil passing switch for controlling the rotating speed of the rotating shaft; the invention has smart design, can realize the functions of unidirectional damping rotation, automatic pressure regulation and overload protection, does not need to add other parts, and has simple and reliable structure function and low production and manufacturing cost.

Description

Extremely-simple hydraulic rotary buffer

Technical Field

The invention relates to a hydraulic one-way damper for a toilet cover plate hinge, in particular to a very simple hydraulic rotary buffer.

Background

The existing toilet seat cover plate hinges are mostly provided with hydraulic damping rotary buffers, the hydraulic damping rotary buffers basically comprise a cylinder filled with damping oil and a rotating shaft inserted into the cylinder for sealing and scratching the oil, in order to enable the cover plate to rapidly turn downwards to a certain angle and then generate hydraulic damping to brake the cover plate to slowly fall down, the basic design is that at least one part is additionally arranged in the sealing section of the cylinder and the rotating shaft to construct an oil check valve, the oil check valve is closed after the rotating shaft rotates for a stroke relative to the cylinder, and the oil pressure damping brake rotating shaft is generated in the cylinder to slowly rotate.

For example, chinese utility model patent (CN205729235U) discloses a damper, it includes axle housing 5 that the inner wall is equipped with fender muscle 55 and the axle core 7 that the footpath face is equipped with protruding muscle 74, blade groove 75 on every protruding muscle 74 increases and installs a blade 6, make to constitute the oiliness check valve between axle core 7 and the axle housing 5 inner wall, blade groove 75's setting needs to increase protruding muscle 74 in the ascending thickness of turning round, so that blade 6 has the swing space, the increase of protruding muscle 74 turning round thickness will make the rotation range of protruding muscle 74 between two fender muscle 55 in axle housing 5 diminish, the biggest angle that makes the turnover of squatting pan apron reduce, apron turnover angle is not big enough and will lead to the focus to lean on and stand unstably.

For example, a damping mechanism with a backward-leaning silencing function disclosed in the chinese utility model patent (CN210265675U) includes a housing 20 filled with damping oil, a rotating shaft 10 hermetically and rotatably engaged with the housing 20 to disturb the damping oil, and a swinging paddle 22 provided on one of the rotating shaft 10 and the housing 20 to form an oil-passing check valve between the rotating shaft 10 and the inner wall of the housing 20; the structure of the rotating shaft 10, the shell 20 and the shifting piece 22 of the damping mechanism is complex, the assembly is inconvenient, and the manufacturing cost and the assembly cost are high.

For another example, a damper disclosed in the chinese invention patent (CN106937842A) comprises a shaft housing 1 and a shaft core 2, wherein one end of the shaft core 2 is inserted into the shaft housing 1 and can rotate relative to the shaft housing 1, the inner wall of the shaft housing is provided with at least one inner protruding strip 1-3, the outer wall of the shaft core is provided with at least one separating rib 3-3, the shaft housing 1 is filled with damping fluid, the end of the shaft core 3 in the shaft housing 1 is additionally provided with a blade 2 rotating relative to the shaft core 3, through the matching of the differential coupling of the blades 2 and the shaft core 3, the blades 2 generate rotary differential when the shaft core 3 rotates in one direction, the staggered gaps generate oil passing to realize the undamped rotation function, when the blades 2 rotate in the opposite direction, the differential motion is not generated in the shaft core 3, so that damping oil of the blades 2 and the shaft core 3 cannot pass through or slowly pass through, and the hydraulic damping brake is generated in the shaft shell to slowly rotate the shaft core 3 and the blades 2, so that the damping rotation function is realized; the damper shaft shell 1 is internally provided with the blades 3 arranged at the shaft end of the shaft core 2 to construct an oil passing one-way valve, so that the production cost and the assembly cost are increased, and the structure is not simple enough.

Disclosure of Invention

In order to solve the problems of the hydraulic damping rotary buffer, the invention aims to provide a very simple hydraulic rotary buffer, wherein the principle of a one-way valve, a throttle valve and a pressure stabilizing valve is comprehensively utilized in an oil cavity in which a rotating shaft is in rotating fit with a shaft sleeve, the matching structure of the rotating shaft and the oil cavity in the rotating direction is directly designed into a one-way oil passing self-regulating oil pressure switch, and a part is not required to be additionally arranged on the rotating shaft or the oil cavity wall in the oil cavity, so that oil is deflected within a rotating angle amplitude of the rotating shaft to generate oil pressure to brake the rotating shaft to slowly rotate, and the one-way hydraulic damping rotary function of the rotating shaft; the invention has the advantages of simple structure, reliable performance and low manufacturing and assembling cost.

In order to achieve the above object, the present invention provides a very simple hydraulic rotary damper, which comprises a shaft sleeve, a rotating shaft, a gland and a sealing ring, and is characterized in that: two partition ribs connected with the bottom surface of the oil cavity are symmetrically arranged on the wall of the oil cavity on the shaft sleeve, and two arc-shaped table sections are arranged on the wall of the oil cavity on one symmetrical side of the two partition ribs; the oil cavity is sleeved with the convex ring and the inner shaft section on the rotating shaft, the inner shaft section is arranged between the two separating ribs, the inner shaft section is symmetrically provided with two convex strips, each convex strip is provided with an elastically flexible oil-scratching wing, the oil-scratching wings are matched with the wall of the oil cavity at intervals, and the oil-scratching wings move to the arc-shaped platform section to be matched with the arc-shaped platform section in an elastic pressure contact manner; the inner end face of the gland is provided with a step hole, the gland is fixedly connected with the oil cavity opening in a compression mode, the convex ring is sleeved into the step hole to be matched in a rotating mode, the inner side face of the convex ring is flush with the inner end face and contacts with the top face of the partition rib, and the oil flexible wing is in contact sliding fit with the inner end face; the sealing ring is sleeved on the outer side of the convex ring and forms sealing fit with the gland; the flexible oil wing, the oil cavity wall and the arc-shaped table section are matched to form a one-way oil passing switch which can automatically adjust the oil pressure of the oil cavity so as to control the rotating speed of the rotating shaft.

The top end of the convex strip is connected with the inner side surface of the convex ring, and the top end of the flexible oil wing is locally connected with the inner side surface of the convex ring; scratching the radial bulge loop that exposes of oil wing, the bulge loop medial surface is connected with the local top of scratching the oil wing at sand grip top end, can improve the joint strength who scratches oil wing and interior shaft section, scratches the radial bulge loop that exposes of oil wing, makes to scratch the oil wing and have the space of scratching interior elastic deformation radially outward at the bulge loop.

The oil scratching wing is provided with at least one concave surface for scratching oil, a top edge surface which is attached to the inner end surface, and a wing end which is matched with the arc-shaped platform section in an elastic press contact manner; the top edge surface of the flexible oil wing can slide and flex elastically on the inner end surface of the gland; the concave surface of the flexible oil wing can deform the flexible oil wing when being pressed by oil pressure, the wing end of the flexible oil wing is separated from the arc table section, the oil pressure is increased, the gap between the wing end and the arc table section is increased by the flexible oil wing, namely the gap between the wing end and the arc table section is changed to automatically adapt to the change of the oil pressure, thereby stabilizing the damping oil pressure.

The flexible oil wing is internally provided with a cavity for increasing the flexibility and the deformation elasticity of the flexible oil wing, and the flexible oil wing with the cavity has better elasticity and more sensitive response to the flexibility and the deformation of the flexible oil wing.

The diameter end of the oil separation rib is an oil separation surface, the surface of the inner shaft section is provided with an eccentric shaft surface and a concentric shaft surface which are connected, the inner shaft section and the oil separation rib are separated to pass oil when the oil separation surface is matched with the eccentric shaft surface, and the inner shaft section and the oil separation rib are attached to seal oil when the oil separation surface is matched with the concentric shaft surface; in this way, the oil passing and sealing matching of the spacer ribs and the inner section shaft surface is realized.

The bottom end faces of the inner shaft section, the convex strip and the flexible oil wing are flat and are in contact with the bottom surface of the cavity, and the bottom surface of the cavity is provided with a quick oil passing groove and an oil saving groove which are matched with and connected with the bottom end face of the flexible oil wing; when scratching the oil wing and grazing the quick oil groove, the damping oil is scratched the oil wing both sides fast, when scratching the oil wing and grazing the festival oil groove, diminishes through the damping oil mass of scratching the oil wing both sides, seals oil when scratching oil wing and bottom face and not having the clearance, blocks the damping oil at the chamber bottom surface of oil pocket and passes through scratching the oil wing both sides.

The clearance fit amplitude of the oil separation surface and the eccentric shaft surface, the clearance fit amplitude of the flexible oil wing and the oil cavity wall and the quick oil passing groove correspond to the same rotation angle of the rotating shaft; namely, the rotating shaft rotates for an angle, so that the oil passing and scratching wings of the spacer ribs and the inner shaft section and the oil passing groove are synchronous in oil passing. The structures which are synchronously matched with the oil can ensure that the rotating shaft cannot block an oil way in the oil cavity to form a hydraulic oil cavity, so that the rotating shaft can rotate quickly without damping.

The fit amplitude of the oil separation surface and the concentric shaft surface and the press-contact fit amplitude of the flexible oil wing and the arc-shaped platform section correspond to the same rotating angle of the rotating shaft. Namely, the rotating shaft rotates by an angle, so that oil sealing and oil sealing of the partition rib and the inner shaft section are synchronous with oil sealing of the arc-shaped table section on the wall of the oil cavity, and the oil sealing and oil sealing of the partition rib and the inner shaft section are synchronous with oil sealing of the arc-shaped table section on the wall of the oil cavity, so that the oil sealing and oil sealing of the oil sealing and sealing of the partition rib, the arc-shaped table section, the concentric shaft surface and the partition rib are realized in the rotating direction of the rotating shaft, oil pressure difference is formed on two sides of the oil sealing and sealing of the partition rib, gap oil seepage is formed.

The bottom surface of the cavity is provided with a central hole, the center of the bottom end of the inner shaft section is provided with a reducing pivot, and the pivot is in inserted connection with the central hole and is in rotating fit with the central hole; the bottom end of the rotating shaft is connected with the bottom of the oil cavity of the shaft sleeve in a centering and rotating manner through the insertion of the pivot and the central hole.

The outer side of the convex ring is an outer shaft section of the rotating shaft, a rubber ring groove is arranged on the outer shaft section, and the rubber ring is sleeved in the rubber ring groove; the pressing cover is provided with a shaft hole communicated with the step hole, the outer shaft section is in sleeve joint and rotating fit with the shaft hole, and the sealing ring is pressed against the inner wall of the shaft hole for sealing; therefore, the sealing of the oil cavity opening and the rotating shaft of the shaft sleeve is realized, and the transfer connection of the rotating shaft and the top end of the shaft sleeve is realized.

The invention has the beneficial effects that:

firstly, the invention skillfully designs the shaft sleeve, the rotating shaft and the gland so that the rotating shaft is sleeved in the sealing flexible oil of the shaft sleeve, namely the one-way damping rotation function of the rotating shaft is realized;

the oil pressure difference at two sides of the flexible oil wing is stabilized through the elastic matching switch of the flexible oil wing and the arc-shaped table section and the stabilizing valve structure for automatically adjusting the opening degree, so that the slow rotating speed of the flexible oil wing braking rotating shaft is stabilized;

the invention does not need to add any other parts in the oil cavity, so that the structure function is simpler and more reliable, the production and the assembly are easy, and the manufacturing cost is low.

Drawings

Fig. 1 is an exploded view of the three-dimensional assembly structure of the present invention.

Fig. 2 is an exploded view of the three-dimensional assembly structure of the present invention.

Fig. 3 is an exploded view of the three-dimensional assembly structure of the present invention.

Fig. 4 is a schematic view of the structure of the shaft sleeve and the rotating shaft of the present invention.

Fig. 5 is an exploded perspective view of the gland of the present invention assembled with the shaft sleeve after being attached to the rotating shaft.

Fig. 6 is a structural sectional view of the present invention.

Fig. 7 is a schematic view of the working principle of undamped fast rotation of the invention during the whole process of turning over the cover plate.

FIG. 8 is a schematic view showing the operation principle of the cover plate rotating fast and slowly during the cover plate turning down process.

Fig. 9 is an exploded view of a three-dimensional assembly structure according to another embodiment of the present invention.

Fig. 10 is an exploded view of another embodiment of the three-dimensional assembly structure of the present invention.

Fig. 11 is a structural sectional view of another embodiment of the present invention.

Fig. 12 is a schematic view of an undamped fast rotation of the present invention during the entire process of flipping over the cover plate according to another embodiment.

FIG. 13 is a schematic view showing the cover plate rotating forward and backward slowly during the process of turning down according to another embodiment of the present invention.

The figures in the drawings are identified as: 10. a shaft sleeve; 11. an oil chamber; 12. a cavity floor; 13. separating ribs; 131. the top surface of the spacer bar; 132. oil separating surface; 14. an arc-shaped table section; 15. a central bore; 16. rapidly passing through an oil groove; 17. an oil saving groove; 20. a rotating shaft; 21. a convex ring; 201. an outer shaft section; 22. an inner shaft section; 23. a convex strip; 24. scratching oil wings; 241. a concave surface; 242. a top edge surface; 243. a wing tip; 244. a cavity; 25. a rubber ring groove; 26. a pivot; 30. a gland; 31. a shaft hole; 32. a stepped bore; 33. an inner end surface; 40. and (5) sealing rings.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example one (flexible oil wing without cavity, single concave).

A very simple hydraulic rotary damper shown in fig. 1 and 2 is constructed by assembling only a sleeve 10, a shaft 20, a gland 30 and a packing 40.

As shown in fig. 1 to 5, the shaft sleeve 10 of the present invention is formed by injection molding, the shaft sleeve 10 has an oil cavity 11, two spacer ribs 13 connected to a cavity bottom surface 12 are symmetrically disposed on the wall of the oil cavity 11, the axial top end of the spacer rib 13 is a top surface 131 of the spacer rib, and the radial end of the spacer rib 13 is an oil separating surface 132; two arc-shaped table sections 14 are arranged on the wall of the oil cavity 11 on the symmetrical side of the two partition ribs 13, a central hole 15 is formed in the cavity bottom surface 12 of the oil cavity 11, and a quick oil passing groove 16 and an oil saving groove 17 which are connected with each other are arranged on the cavity bottom surface 12.

As shown in fig. 1 to 5, the rotating shaft 20 of the present invention is integrally injection molded, the rotating shaft 20 has a protruding ring 21, an outer shaft section 201 of the rotating shaft 20 is arranged outside the protruding ring 21, and the outer shaft section 201 is provided with a rubber ring groove 25; the inner side of the convex ring 21 is provided with an inner shaft section 22 of the rotating shaft 20, the center of the bottom end of the inner shaft section 22 is provided with a reduced-diameter pivot 26, the inner shaft section 22 is symmetrically provided with two convex strips 23, and the surface of the inner shaft section 22 between the two convex strips 23 is symmetrically provided with an eccentric shaft surface 221 and a concentric shaft surface 222 which are connected with each other; each convex strip 23 is provided with an oil-flexible wing 24 which can be elastically bent; the top end of the convex strip 23 is connected with the inner side surface of the convex ring 21, the top end of the flexible oil wing 24 is locally connected with the inner side surface of the convex ring 21, and the flexible oil wing 24 radially exposes out of the convex ring 21; the oil-flexibilizing wing 24 has an oil-flexibilizing concave surface 241, a top edge surface 242, and a wing end 243.

As shown in fig. 1 to 3, 5 and 6, the gland 30 of the present invention is integrally injection molded, a stepped hole 32 is formed on an inner end surface 33 of the gland 30, and the gland 30 has a shaft hole 31 communicating with the stepped hole 32.

The assembly of the present invention is described in detail below.

As shown in fig. 1 to fig. 3, the sealing ring 40 is firstly sleeved in the sealing ring groove 25 on the outer shaft section 201 of the rotating shaft 20 and fixed, as shown in fig. 3, fig. 5 and fig. 6, the concave surface 241 of the oil-flexible wing 24 faces the arc-shaped platform section 14, the convex ring 21 and the inner shaft section 22 on the rotating shaft 20 are sleeved in the oil cavity 11, damping oil is injected and filled in the oil cavity 11, then the gland 30 is sleeved on the outer shaft section 201 of the rotating shaft 20 and is pressed and sleeved in the oil cavity 11 of the shaft sleeve 10 for sealing, and then the wave soldering is used for welding and fixing the gland 30 and the shaft sleeve 10, thus completing the rapid assembly of the invention.

The following describes in detail the fitting structure of the components of the present invention.

As shown in fig. 4 to 8, the outer shaft section 201 of the rotating shaft 20 is exposed out of the gland through the shaft hole 31 on the gland 30, the sealing ring 40 is pressed and sealed between the outer shaft section 201 and the inner wall of the shaft hole 31 to realize the sealed and rotatable fit of the outer shaft section 201 and the shaft hole 31, the convex ring 21 on the rotating shaft 20 is rotatably fitted with the stepped hole 32, the inner shaft section 22 is located between the two spacer ribs 13, and the pivot 26 at the bottom end of the inner shaft section 22 is rotatably fitted with the central hole 15 on the cavity bottom surface 12; the inner side surface of the convex ring 21 and the inner end surface 33 of the gland 30 are flush and contact with the top surface 131 of the spacer rib together, so that the inner side surface of the convex ring 21 and the inner end surface 33 of the gland 30 can seal the oil chamber 11, and the inner shaft section 22 of the rotating shaft 20 is axially limited to rotate in the oil chamber 11.

As shown in fig. 4 to 8, the convex strip 23 and the oil-flexible wing 24 on the inner shaft section 22 move between the ribs 13, and the side surface of the rib 13 can block the convex strip 23 to limit the range of the rotation angle of the rotating shaft 20, and simultaneously can avoid the oil-flexible wing 24 from colliding with the rib 13; when the oil separating surface 132 is matched with the eccentric shaft surface 221, the inner shaft section 22 and the spacer 13 are separated from oil, and when the oil separating surface 132 is matched with the concentric shaft surface 222, the inner shaft section 22 and the spacer 13 are attached and sealed with oil.

As shown in fig. 4 to 8, the top edge surface 242 of the flexible oil wing 24 radially exposed out of the convex ring 21 is attached to the inner end surface 33 of the gland 30, and the top edge surface 242 can slide on the inner end surface 33 of the gland 30, so that the flexible oil wing 24 can elastically flex and deform in the rotating direction of the rotating shaft 20; the inner shaft section 22, the convex strip 23 and the bottom end surface plane of the oil scratching wing 24 are in contact sliding fit with the cavity bottom surface 12, and the oil scratching wing 24 scratches oil in the oil cavity 11 between the partition ribs 13 when the rotating shaft 20 rotates; when the bottom end surface of the oil scratching wing 24 slides between the quick oil passing groove 16 and the oil saving groove 17, the flow of the damping oil in the oil cavity 11 can be changed through the quick oil passing groove 16 and the oil saving groove 17 on the cavity bottom surface 12, and when the bottom end surface of the oil scratching wing 24 leaves the quick oil passing groove 16 and the oil saving groove 17, the damping oil at the bottom end of the oil scratching wing 24 does not pass through. The wing ends 243 of the oil scratching wings 24 are matched with the wall of the oil chamber 11 at intervals, so that damping oil can pass through, and when the oil scratching wings 24 move to the arc-shaped platform section 14, the wing ends 243 elastically press the arc-shaped platform section 14, oil is sealed elastically; the wing end 243 of the oil-flexing wing 24 is matched with the wall of the oil chamber 11 and the arc-shaped table section 14 to form a one-way oil-passing switch which can automatically adjust the oil pressure of the oil chamber 11 so as to control the rotating speed of the rotating shaft 20.

As shown in fig. 4 to 8, in the present invention, the clearance fit range of the oil separation surface 132 and the eccentric shaft surface 221, the clearance fit range of the flexible oil wing 24, the wall of the oil chamber 11 and the fast oil passing groove 16 all correspond to the same rotation angle of the rotating shaft 20; namely, the rotating shaft 20 rotates for an angle, so that the oil passing of the spacer ribs 12 and the inner shaft section 22, the oil deflection wing 24 and the wall of the oil chamber 11 and the oil passing through the quick oil passing groove 16 are synchronous. The synchronous matching oil passing structures can ensure that the rotating shaft 20 cannot block an oil path in the oil chamber 11 to form a hydraulic oil chamber, so that the rotating shaft can rotate rapidly without damping. In the invention, the fit amplitude of the oil separation surface 132 and the concentric shaft surface 222 and the press-contact fit amplitude of the flexible oil wing 24 and the arc-shaped platform section 14 correspond to the same rotation angle of the rotating shaft 20; that is, the rotating shaft 20 rotates by an angle, so that the oil sealing of the partition rib 13 and the inner shaft section 22, the oil sealing of the oil-bending wing 24 and the arc-shaped platform section 14 on the wall of the oil chamber 11 are synchronous, and the oil-bending wing 24, the arc-shaped platform section 14, the concentric shaft surface 222 and the partition rib 13 are sealed in the rotating direction of the rotating shaft 20 to form a hydraulic oil chamber, so that an oil pressure difference is formed on two sides of the oil-bending wing 24, the oil-bending wing 24 can elastically deform under the oil pressure on the concave surface 241, and a gap oil leakage is formed between the wing end 243 of the oil-bending wing 24 and the arc-shaped platform section 14, so that the oil pressure difference on two sides of the oil-bending wing 24 is stably leaked by the oil in the.

The operation and concrete operation of the present invention will be described in detail below.

As shown in fig. 1 and 6, a cover plate (not shown) of the toilet bowl is connected to the shaft sleeve 10, an outer shaft section 201 of the rotating shaft 20 is fixed to a top surface of the ceramic toilet bowl (not shown) through a support, specifically, the rotating direction of the rotating shaft 20 is opposite to the rotating mode of the shaft sleeve 10, damping hydraulic pressure can brake the rotating shaft 20 to rotate in a buffering mode through the oil-flexible wing 24, and correspondingly, the damping hydraulic pressure can brake the shaft sleeve 10 to rotate in a buffering mode through the partition rib 13, so that a person skilled in the art can understand the damping hydraulic pressure.

The whole process of turning the cover plate open will be described in detail below, and how the shaft sleeve 10 can rotate fast relative to the rotating shaft 20 without damping in the whole process, so that the cover plate can be turned fast.

As shown in fig. 7, fig. 1, fig. 2, and fig. 6, when the cover plate is manually lifted, the cover plate starts to be turned up, the shaft sleeve 10 rotates clockwise relative to the inner shaft section 22 of the rotating shaft, the oil separation surface 132 of the rib 13 is attached to the concentric shaft surface 222 on the inner shaft section 22 and slides clockwise, and when the flexible oil wing 24 moves along the arc-shaped platform section 14 to the inner wall of the oil cavity 11, because both sides of the flexible oil wing 24 are sealed, the rib 13 presses the damping oil to flow clockwise and presses the flexible oil wing 24 to bend and deform, the top edge surface 242 of the flexible oil wing 24 slides on the inner end surface 33 of the gland 30, and the wing end 243 is separated from the arc-shaped platform section 14 to form an oil gap, so that the damping oil quickly passes through the flexible oil wing 24 clockwise, and the oil cannot be sealed on both sides of the flexible oil wing 24 to form the oil pressure difference braking rib 13, that there is no hydraulic damping, so that the shaft sleeve 10. When the wing end 243 of the oil-scratching wing 24 reaches the inner wall section of the oil cavity 11, the wing end is elastically deformed and forms an interval with the inner wall of the oil cavity 11, the oil-separating surface 132 of the oil-scratching wing 13 synchronously reaches the eccentric shaft surface 221 to form an interval, the bottom end surface of the oil-scratching wing 24 forms a quick oil-passing interval with the bottom surface of the cavity through the quick oil-passing groove 16, so that the oil-scratching wing can freely pass through two sides of the oil-scratching wing 13 and two sides of the oil-scratching wing 24, the oil-scratching wing 13 cannot be sealed in the oil cavity 11, namely, no hydraulic damping exists, the shaft sleeve 10 can still continuously and quickly rotate clockwise until the side surface of the oil-scratching wing 13 is blocked by.

As shown in fig. 8, fig. 1, fig. 2, and fig. 6, when the cover plate is manually pulled forward to remove the forward tilt, the shaft sleeve 10 rotates counterclockwise, the oil separating surface 132 of the oil separating rib 13 forms an interval at the section of the eccentric shaft surface 221, the wing end 243 of the oil-flexing wing 24 is spaced from the inner wall of the oil cavity 11, and the bottom end surface of the oil-flexing wing 24 forms an interval with the cavity bottom surface through the rapid oil passing groove 16, so that the damping oil in the oil cavity 11 can rapidly pass through the two sides of the oil separating rib 13 and the two sides of the oil-flexing wing 24, and an oil sealing structure cannot be formed in the oil cavity 11 to form oil pressure, so that the shaft sleeve 10 rotates counterclockwise rapidly without the hydraulic damping braking oil separating rib 13, that is, when the cover plate is released, the cover plate turns up and down. When the shaft sleeve 10 rotates counterclockwise until the wing end 243 of the flexible oil wing 24 elastically presses against the arc-shaped platform section 14, the oil is blocked and sealed, the bottom surface of the flexible oil wing 24 sweeps through the oil saving groove 17 and completely contacts with the cavity bottom surface 12 to block the oil, the concentric shaft surface 222 of the inner shaft section 22 synchronously contacts with the oil blocking surface 132 of the spacer 13 to block the oil, so that the flexible oil wing 24, the arc-shaped platform section 14, the concentric shaft surface 222, the cavity bottom surface 12 and the inner end surface 33 of the gland 30 enclose a closed hydraulic oil cavity at the arc-shaped platform section 14, as the cover plate continuously turns downwards, one side of the spacer 13 and one side of the flexible oil wing 24 press oil oppositely, and due to the elasticity of the flexible oil wing 24, the damping oil pressure presses against the concave surface 241 of the flexible oil wing 24 to make the flexible oil wing 24 flex and the wing end 243 of the flexible oil wing 24 breaks away from the arc-shaped platform section 14 to form a gap through which the oil can seep and flow through the other side of the flexible oil cavity, so that the oil in the hydraulic oil in the gap formed by the wing, the oil pressure of the hydraulic oil cavity is kept to stably brake the spacer ribs 13, so that the shaft sleeve 10 slowly overturns and slowly falls after the rear half of the cover plate until the spacer ribs 13 are blocked by the convex strips on the inner shaft section 22 to stop rotating, and the slow falling buffering function of the cover plate is realized.

As shown in fig. 8, it should be particularly noted that: when the oil pressure in the oil leakage stabilizing cavity 11 is formed by the wing end 243 of the oil-flexing wing 24 and the arc-shaped platform section 14, if an external force suddenly presses the cover plate, the acceleration shaft sleeve 10 rotates, namely the partition rib 13 accelerates the compression of the hydraulic oil cavity, the oil-flexing wing 24 can increase the flexing deformation degree in response to the sudden increase of the oil pressure, so that the gap formed by the wing end 243 and the arc-shaped platform section 14 is enlarged, the flow rate of damping oil is increased, the oil pressure of the hydraulic oil cavity which is suddenly increased is released, and the oil pressure overload protection function is realized.

In addition, because the cover plate produced by the cover plate manufacturer has different weight, the buffer speed and time can be influenced by the weight of the cover plate, when the hydraulic oil cavity is formed, the oil pressure can press the flexible oil wing 24 to deform, the gap opening degree of the wing end 243 and the arc-shaped table section 14 is adaptively and elastically changed, which is equivalent to the automatic oil pressure regulation of a pressure stabilizing valve, so that the automatic oil pressure regulation function can be realized without adding other parts in or outside the oil cavity.

Example two (flexible oil wing has die cavity, biconcave).

As shown in fig. 9 to 13, the present embodiment is different from the first embodiment in that: the flexible oil wing 24 of the embodiment is provided with two concave surfaces 241 for flexible oil, a top edge surface 242 contacted with the inner end surface 33, and a wing end 243 elastically pressed and matched with the arc-shaped platform section 14, and the flexible oil wing 24 is internally provided with a cavity 244 for increasing the flexibility of the flexible oil wing; by the design, the rotating shaft 20 is inserted into the shaft sleeve 10, whether the concave surface 241 of the oil-flexible wing 24 faces the arc-shaped table section 14 is not identified, and the assembly efficiency is improved; the cavity 244 is added to the flexible oil wing 24, so that the elasticity and the elasticity sensitivity of the flexible oil wing 24 can be improved, and the shape recovery speed of the flexible oil wing is increased. Other structures, operation principles and implementation actions of this embodiment are the same as those of the first embodiment, and are not described again.

The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore, all equivalent technical solutions should also fall within the scope of the present invention, and are defined by the claims.

Claims

1. The utility model provides a rotatory buffer of very brief type hydraulic pressure, includes a axle sleeve (10), a pivot (20), a gland (30) and a sealing washer (40), its characterized in that:

two partition ribs (13) connected with the cavity bottom surface (12) are symmetrically arranged on the wall of the oil cavity (11) on the shaft sleeve (10), and two arc-shaped table sections (14) are arranged on the wall of the oil cavity (11) on one symmetrical side of the two partition ribs (13);

the oil cavity (11) is sleeved with a convex ring (21) and an inner shaft section (22) on the rotating shaft (20), the inner shaft section (22) is positioned between two separating ribs (13), two convex strips (23) are symmetrically arranged on the inner shaft section (22), an elastically flexible oil-flexible wing (24) is arranged on each convex strip (23), the oil-flexible wings (24) are matched with the wall of the oil cavity (11) at intervals, and the oil-flexible wings (24) move to the arc-shaped platform section (14) to be matched with the arc-shaped platform section in an elastic pressure contact manner;

a step hole (32) is arranged on an inner end surface (33) of the gland (30), the gland (30) is fixedly connected with an oil cavity (11) in a compression joint mode, the convex ring (21) is sleeved into the step hole (32) to be in rotating fit, the inner side surface of the convex ring (21) and the inner end surface (33) are in parallel and level contact with the top surface (131) of the spacer rib, and the oil-flexible wing (24) and the inner end surface (33) are in contact sliding fit;

the sealing ring (40) is sleeved on the outer side of the convex ring (21) and forms sealing fit with the gland (30);

the oil-flexing wing (24) is matched with the wall of the oil cavity (11) and the arc-shaped table section (14) to form a one-way oil-passing switch which can automatically adjust the oil pressure of the oil cavity (11) to control the rotating speed of the rotating shaft (20).

2. A very simple hydraulic rotary damper according to claim 1, wherein: the top end of the convex strip (23) is connected with the inner side surface of the convex ring (21), and the top end of the flexible oil wing (24) is locally connected with the inner side surface of the convex ring (21); the oil-flexible wing (24) is radially exposed out of the convex ring (21).

3. A very simple hydraulic rotary damper according to claim 1, wherein: the oil-scratching wing (24) is provided with at least one concave surface (241) for scratching oil, a top edge surface (242) which is attached to the inner end surface (33) and a wing end (243) which is elastically pressed and matched with the arc-shaped platform section (14).

4. A very simple hydraulic rotary damper according to claim 3, wherein: the flexible oil wing (24) is also internally provided with a cavity (244) for increasing the flexibility of the flexible oil wing.

5. A very simple hydraulic rotary damper according to claim 1, wherein: the diameter end of the oil separation rib (13) is provided with an oil separation surface (132), the surface of the inner shaft section (22) is provided with an eccentric shaft surface (221) and a concentric shaft surface (222) which are connected with each other, the inner shaft section (22) and the oil separation rib (13) are separated to pass oil when the oil separation surface (132) is matched with the eccentric shaft surface (221), and the inner shaft section (22) and the oil separation rib (13) are jointed and sealed when the oil separation surface (132) is matched with the concentric shaft surface (222).

6. A very simple hydraulic rotary damper according to claim 1, wherein: the bottom end faces of the inner shaft section (22), the convex strip (23) and the flexible oil wing (24) are flat and are attached to the bottom face (12) of the cavity, and the bottom face (12) of the cavity is provided with a quick oil passing groove (16) and an oil saving groove (17) which are matched with and pass through oil from the bottom end face of the flexible oil wing (24) and are connected with each other.

7. A very simple hydraulic rotary damper according to claim 5 or 6, wherein: the oil separation surface (132) and the eccentric shaft surface (221) are in clearance fit, and the oil deflection wings (24) and the oil cavity (11) wall and the rapid oil passing groove (16) are in clearance fit with the same rotating angle of the rotating shaft (20).

8. A very simple hydraulic rotary damper according to claim 5 or 6, wherein: the oil separating surface (132) and the concentric shaft surface (222) are in fit amplitude, and the oil flexible wing (24) and the arc platform section (14) are in press-contact fit amplitude which corresponds to the same rotating angle of the rotating shaft (20).

9. A very simple hydraulic rotary damper according to claim 1, wherein: the cavity bottom surface (12) is provided with a central hole (15), the bottom center of the inner shaft section (22) is provided with a reducing pivot (26), and the pivot (26) is in inserted connection and rotating fit with the central hole (15).

10. A very simple hydraulic rotary damper according to claim 1, wherein: the outer side of the convex ring (21) is provided with an outer shaft section (201) of the rotating shaft (20), the outer shaft section (201) is provided with a rubber ring groove (25), and the sealing ring (40) is sleeved in the rubber ring groove (25); the gland (30) is provided with a shaft hole (31) communicated with the stepped hole (32), the outer shaft section (201) is in sleeve joint and rotating fit with the shaft hole (31), and the sealing ring (40) is pressed against the inner wall of the shaft hole (31) for sealing.