Extremely-simple hydraulic rotary buffer
阅读说明：本技术 一种极简型液压旋转缓冲器 (Extremely-simple hydraulic rotary buffer ) 是由 王治恭 于 2020-08-06 设计创作，主要内容包括：本发明公开的一种极简型液压旋转缓冲器,仅有轴套、转轴、压盖和密封圈各一,轴套对称设置两与腔底面连接的隔筋,两隔筋相对称的一侧的油腔壁上设有两个弧形台段；转轴的凸环及内轴段套入油腔,内轴段上对称设有两根凸条,各凸条上设一可弹性挠曲的挠油翼,挠油翼与油腔壁间隔或与弧形台段弹性压触；压盖与油腔口压接固定,凸环套入压盖内端面的台阶孔,凸环内侧面与内端面平齐地贴触于隔筋的顶面,挠油翼与内端面贴触滑移配合；轴套与压盖间用密封圈密封,挠油翼与油腔壁、弧形台段构成一控制转轴转速的单向过油开关；本发明设计巧妙,可实现单向阻尼转动、自动调压和过载保护功能,不需增加其它部件,使得结构功能简单可靠,生产制造成本低。(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.)
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.
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
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.
- 上一篇：一种医用注射器针头装配设备
- 下一篇：一种用于铁轨吊装的吊装车防止失速伤人机构