阅读说明：本技术 一种旋转阻尼器 (Rotary damper ) 是由 王盛 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种旋转阻尼器,涉及阻尼器技术领域,包括：壳体、转动组件和若干个自动复位阀片；转动组件包括转轴和若干个刮片,部分转轴位于壳体内,转轴与壳体内壁之间的腔体盛装有具备粘滞力的流体；刮片设置于转轴上,刮片平行于转轴,刮片将转轴和壳体内壁之间的腔体分为多个子腔体；刮片上设置有通油孔,通油孔连通刮片两侧的子腔体；自动复位阀片中的阀片转动连接于转动组件上,自动复位阀片能够自动复位并将通油孔堵住；本发明公开的技术方案提高了阀片通断的稳定性。(The invention discloses a rotary damper, which relates to the technical field of dampers and comprises the following components: the automatic reset valve comprises a shell, a rotating assembly and a plurality of automatic reset valve plates; the rotating assembly comprises a rotating shaft and a plurality of scraping blades, part of the rotating shaft is positioned in the shell, and a cavity between the rotating shaft and the inner wall of the shell is filled with fluid with viscous force; the scraping blade is arranged on the rotating shaft and parallel to the rotating shaft, and divides a cavity between the rotating shaft and the inner wall of the shell into a plurality of sub-cavities; the scraping blade is provided with an oil through hole which is communicated with the sub-cavities on the two sides of the scraping blade; the valve plate in the automatic reset valve plate is rotationally connected to the rotating assembly, and the automatic reset valve plate can automatically reset and block the oil through hole; the technical scheme disclosed by the invention improves the stability of on-off of the valve plate.)

1. A rotary damper characterized by: the method comprises the following steps: the automatic reset valve comprises a shell, a rotating assembly and a plurality of automatic reset valve plates; the rotating assembly comprises a rotating shaft and a plurality of scraping blades, part of the rotating shaft is positioned in the shell, and a cavity between the rotating shaft and the inner wall of the shell is filled with fluid with viscous force; the scraping blade is arranged on the rotating shaft and is parallel to the rotating shaft, and the cavity between the rotating shaft and the inner wall of the shell is divided into a plurality of sub-cavities by the scraping blade; the scraping blade is provided with an oil through hole which is communicated with the sub-cavities on two sides of the scraping blade; the valve plate in the automatic reset valve plate is rotationally connected to the rotating assembly, and the automatic reset valve plate can be automatically reset and block the oil through hole.

2. The rotary damper of claim 1, wherein: two ends of one side, close to the rotating shaft, of each valve block are provided with an extending shaft along the length direction, a plurality of groups of shaft hole groups are arranged in the rotating assembly, each shaft hole group corresponds to each valve block respectively, each group of shaft hole groups comprises two shaft holes, each shaft hole is parallel to each rotating shaft, two extending shafts on each valve block are matched with two shaft holes in each shaft hole group respectively, and the extending shafts are inserted into the shaft holes and can rotate.

3. The rotary damper of claim 2, wherein: each scraping piece is connected to the rotating shaft in a buckling mode, two first semi-cylindrical grooves are formed in one end, facing the rotating shaft, of each scraping piece, a plurality of second semi-cylindrical grooves are formed in the rotating shaft, each second semi-cylindrical groove is formed corresponding to each first semi-cylindrical groove, and each corresponding second semi-cylindrical groove and each corresponding first semi-cylindrical groove are buckled to form each shaft hole.

4. The rotary damper of claim 3, wherein: and one end of each scraping blade, which faces one side of the rotating shaft, is provided with a buckling position strip, the rotating shaft is provided with a buckling position groove corresponding to the buckling position hole, and the buckling position strip is hung in the buckling position groove.

5. The rotary damper of claim 3, wherein: the automatic reset valve plate comprises the valve plate and an elastic element, one end of the elastic element is arranged on the rotating assembly, the other end of the elastic element is arranged on the valve plate, and the elastic element applies elastic force to the valve plate, wherein the elastic force moves towards the oil through hole.

6. The rotary damper of claim 5, wherein: the elastic element is a spring, a cylindrical groove is formed in the rotating shaft from the outer side wall inwards in the radial direction of the rotating shaft, and one end of the spring extends into the cylindrical groove from the opening of the cylindrical groove and abuts against the bottom of the cylindrical groove; the valve plate is provided with a limiting bulge coaxial with the cylindrical groove, and the other end of the spring is sleeved on the limiting bulge.

7. The rotary damper of claim 1, wherein: the automatic reset valve plate rotating assembly comprises two automatic reset valve plates, the rotating assembly comprises two scraping plates, the two scraping plates are symmetrical about the axis center of the rotating shaft, and the two automatic reset valve plates are symmetrical about the axis center of the rotating shaft.

8. The rotary damper of claim 1, wherein: the inner wall of the shell is provided with two partition columns which extend towards a central axis along the radial direction of the inner wall, and the two partition columns are symmetrically arranged around the central axis of the shell; and a gap is reserved between one end of each of the two segmentation columns, which is far away from the inner wall of the shell, and the rotating shaft.

Technical Field

The invention relates to the technical field of dampers, in particular to a rotary damper.

Background

The damping mechanism has a buffering function and is widely applied to daily life, such as on a toilet seat cover plate, a box cover or a door leaf; the existing Chinese patent application, entitled a reverse small-angle resistive damper, has a publication number of CN108679143A, and specifically introduces a reverse small-angle resistive damper, wherein an elastic element is installed between a valve plate and a doctor blade, so that the valve plate can reset and block the communication between chambers under the action of the elastic element after the valve plate rotates in a reverse small angle and stops rotating, and therefore, the reverse rotation is still performed after the rotating shaft rotates in a small angle, and the damping effect is still achieved; however, the elastic element valve plate in the technology provided by the above patent application moves in a translational manner under the action of spring force to form an on-off function, and the plane of the valve plate is easily deflected by unequal force, so that the on-off effect is abnormal; therefore, a new type of rotary damper is needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a rotary damper, which is used for solving the problems in the prior art and improving the stability of on-off of a valve plate.

In order to achieve the purpose, the invention provides the following scheme:

the present invention provides a rotary damper comprising: the automatic reset valve comprises a shell, a rotating assembly and a plurality of automatic reset valve plates; the rotating assembly comprises a rotating shaft and a plurality of scraping blades, part of the rotating shaft is positioned in the shell, and a cavity between the rotating shaft and the inner wall of the shell is filled with fluid with viscous force; the scraping blade is arranged on the rotating shaft and is parallel to the rotating shaft, and the cavity between the rotating shaft and the inner wall of the shell is divided into a plurality of sub-cavities by the scraping blade; the scraping blade is provided with an oil through hole which is communicated with the sub-cavities on two sides of the scraping blade; the valve plate in the automatic reset valve plate is rotationally connected to the rotating assembly, and the automatic reset valve plate can be automatically reset and block the oil through hole.

Preferably, two ends of one side, close to the rotating shaft, of each valve plate are provided with an extension shaft along the length direction, a plurality of groups of shaft hole groups are arranged in the rotating assembly, each shaft hole group corresponds to each valve plate respectively, each group of shaft hole groups comprises two shaft holes, each shaft hole is parallel to each rotating shaft, two extension shafts on each valve plate are matched with two shaft holes in each shaft hole group respectively, and the extension shafts are inserted in the shaft holes and can rotate.

Preferably, each of the scraping pieces is connected to the rotating shaft in a buckling manner, two first semi-cylindrical grooves are formed in one end, facing the rotating shaft, of each of the scraping pieces, a plurality of second semi-cylindrical grooves are formed in the rotating shaft, each of the second semi-cylindrical grooves corresponds to one of the first semi-cylindrical grooves, and each of the corresponding second semi-cylindrical grooves and the corresponding first semi-cylindrical groove are buckled to form each of the shaft holes.

Preferably, one end of each scraping blade facing one side of the rotating shaft is provided with a buckling position strip, the rotating shaft is provided with a buckling position groove corresponding to the buckling position hole, and the buckling position strip is hung in the buckling position groove.

Preferably, the automatic reset valve plate comprises the valve plate and an elastic element, one end of the elastic element is arranged on the rotating assembly, the other end of the elastic element is arranged on the valve plate, and the elastic element applies an elastic force to the valve plate, wherein the elastic force moves towards the oil through hole.

Preferably, the elastic element is a spring, the rotating shaft is provided with a cylindrical groove inwards along the radial direction of the rotating shaft from the outer side wall, and one end of the spring extends into the cylindrical groove from the opening of the cylindrical groove and abuts against the bottom of the cylindrical groove; the valve plate is provided with a limiting bulge coaxial with the cylindrical groove, and the other end of the spring is sleeved on the limiting bulge.

Preferably, the automatic reset valve plate comprises two automatic reset valve plates, the rotating assembly comprises two scraping blades, the two scraping blades are symmetrical about the axis center of the rotating shaft, and the two automatic reset valve plates are symmetrical about the axis center of the rotating shaft.

Preferably, the inner wall of the shell is provided with two partition columns extending along the radial direction of the inner wall towards the central axis, and the two partition columns are symmetrically arranged around the central axis of the shell; and a gap is reserved between one end of each of the two segmentation columns, which is far away from the inner wall of the shell, and the rotating shaft.

Compared with the prior art, the invention has the following technical effects:

the invention provides a rotary damper, wherein an automatic reset valve plate can automatically reset and block an oil through hole after a rotating shaft rotates at a small angle, so that the rotating shaft has resistance in the forward resetting process after rotating at a small angle in the reverse direction; in addition, the valve plate in the automatic reset valve plate is rotatably connected to the rotating assembly, so that the valve plate and the rotating assembly are connected, the rotating assembly limits the motion track of the valve plate, the valve plate can only swing along the rotation track to realize the on-off function of the valve plate, the valve plate is prevented from being skewed due to uneven stress, and the stability of on-off of the valve plate is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an exploded view of a rotary damper provided in accordance with the present invention;

FIG. 2 is a schematic structural view of the rotary damper of the present invention without the housing assembled;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a schematic structural view of a valve plate in the rotary damper according to the present invention;

FIG. 5 is a schematic structural view of a rotary shaft in the rotary damper according to the present invention;

FIG. 6 is a view in the other direction of FIG. 5;

FIG. 7 is a cross-sectional view of a rotary damper provided by the present invention;

FIG. 8 is a schematic structural view of a housing in the rotary damper provided in the present invention;

FIG. 9 is a schematic view of the structure of the wiper blade in the rotary damper according to the present invention;

in the figure: the automatic reset valve comprises a shell 1, a rotating shaft 2, a scraper 3, a valve plate 4, a spring 5, a limiting bulge 6, a cylindrical groove 7, a buckling groove 8, a partition column 9, a first semi-cylindrical groove 10, a buckling strip 11, an oil through hole 12, a second semi-cylindrical groove 13, an extending shaft 14, a rotating assembly 15 and an automatic reset valve plate 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a rotary damper, which is used for solving the problems in the prior art and improving the stability of on-off of a valve plate.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The present invention provides a rotary damper, as shown in fig. 1 to 9, comprising: the automatic reset valve comprises a shell 1, a rotating assembly 15 and a plurality of automatic reset valve plates 16; the rotating assembly 15 comprises a rotating shaft 2 and a plurality of scraping blades 3, wherein part of the rotating shaft 2 is positioned in the shell 1, and a cavity between the rotating shaft 2 and the inner wall of the shell 1 is filled with fluid with viscous force, such as grease; the scraping blade 3 is arranged on the rotating shaft 2, the scraping blade 3 rotates along with the rotating shaft 2, the scraping blade 3 is parallel to the rotating shaft 2, and the scraping blade 3 divides a cavity between the rotating shaft 2 and the inner wall of the shell 1 into a plurality of sub-cavities; the scraping blade 3 is provided with an oil through hole 12, and the oil through hole 12 is communicated with the sub-cavities at the two sides of the scraping blade 3; the valve plate 4 in the automatic reset valve plate 16 is rotatably connected to the rotating assembly 15, the automatic reset valve plate 16 can automatically reset and block the oil through hole 12, when the rotating shaft 2 rotates in the forward direction, the valve plate 4 moves in the direction away from the oil through hole 12 under the action of oil pressure, the oil through hole 12 is opened, when the rotating shaft 2 stops rotating, the valve plate 4 automatically resets and blocks the oil through hole 12, the oil through hole 12 is closed, and at the moment, when the rotating shaft 2 rotates in the reverse direction, the rotating shaft 2 can be subjected to damping force; and valve block 4 among the automatic re-setting valve block 16 rotates and connects on rotating assembly 15 for valve block 4 produces the relation of connection with rotating assembly 15, and rotating assembly 15 plays the restriction effect to the movement track of valve block 4, and valve block 4 can only move along the rotation track in order to realize the break-make function of valve block 4, prevents that valve block 4 from appearing crooked because of the atress is uneven, has improved the stability of valve block 4 break-make.

Furthermore, both ends of one side of each valve plate 4 close to the rotating shaft 2 along the length direction are provided with an extending shaft 14, a plurality of groups of shaft hole groups are arranged in the rotating assembly 15, each shaft hole group corresponds to each valve plate 4, each group of shaft hole groups comprises two shaft holes, each shaft hole is parallel to each rotating shaft 2, two extending shafts 14 on each valve plate 4 are respectively matched with two shaft holes in each shaft hole group, the extending shafts 14 are inserted in the shaft holes and can rotate, the extending shafts 14 and the valve plates 4 are integrally arranged, and the shaft holes play a role in limiting the extending shafts 14 to move except for rotation, so that the valve plates 4 can only rotate around the axes of the shaft holes, do fixed shaft swinging, and improve the movement stability of the valve plates 4.

Furthermore, each scraping blade 3 is connected to the rotating shaft 2 in a buckling manner, two first semi-cylindrical grooves 10 are formed in one end, facing the rotating shaft 2, of each scraping blade 3, a plurality of second semi-cylindrical grooves 13 are formed in the rotating shaft 2, each second semi-cylindrical groove 13 corresponds to each first semi-cylindrical groove 10, and each corresponding second semi-cylindrical groove 13 is buckled with each first semi-cylindrical groove 10 to form each shaft hole, so that field workers can assemble the rotating shaft 2, the scraping blades 3 and the valve plates 4 conveniently; specifically, after the extension shaft 14 is placed in the second semi-cylindrical groove 13, the wiper blade 3 is fastened on the rotating shaft 2, and at this time, the extension shaft 14 is limited in the shaft hole formed by the first semi-cylindrical groove 10 and the second semi-cylindrical groove 13.

Furthermore, the existing scraper 3 and the rotating shaft 2 have no occlusion effect during assembly, are easy to loosen during assembly, and can be integrated with the rotating shaft 2 after being constrained by the inner wall of the shell 1 after being assembled in the shell 1; therefore, one end of each scraping piece 3, which faces one side of the rotating shaft 2, is provided with a buckling position strip 11, the rotating shaft 2 is provided with a buckling position groove 8 corresponding to the buckling position hole, the buckling position strips 11 are hung in the buckling position grooves 8, the scraping pieces 3 can be hung on the rotating shaft 2 during assembly, and then the process of assembling the shell 1 is carried out, and when the shell 1 is installed, the scraping pieces 3 are not easy to loosen from the rotating shaft 2.

Further, in order to realize the automatic reset function of the automatic reset valve plate 16, the automatic reset valve plate 16 is configured to include the valve plate 4 and an elastic element, one end of the elastic element is disposed on the rotating assembly 15, the other end of the elastic element is disposed on the valve plate 4, the elastic element applies an elastic force to the valve plate 4, the elastic force moves towards the oil through hole 12, and under the effect of the elastic force of the elastic element, the valve plate 4 rotates towards the oil through hole 12 and blocks the oil through hole.

Furthermore, the elastic element is a spring 5, the rotating shaft 2 is provided with a cylindrical groove 7 from the outer side wall inwards along the radial direction, and one end of the spring 5 extends into the cylindrical groove 7 from the opening of the cylindrical groove and abuts against the bottom of the cylindrical groove 7; be provided with one on the valve block 4 with the coaxial spacing arch 6 of cylinder groove 7, on spacing arch 6 was located to the other pot head of spring 5, can drive spring 5 when valve block 4 rotated and take place distortion, the spring 5 after the deformation possesses the ability of resuming self shape, consequently, spring 5 can apply a resilience force for valve block 4 rotates towards oil through hole 12.

Further, the automatic reset valve plate 16 is included, the rotating assembly 15 includes two wiper blades 3, the two wiper blades 3 are symmetrical about the axis center of the rotating shaft 2, and the two automatic reset valve plates 16 are symmetrical about the axis center of the rotating shaft 2.

Further, two partition columns 9 extending along the radial direction towards the central axis are arranged on the inner wall of the shell 1, and the two partition columns 9 are symmetrically arranged around the central axis of the shell 1; a gap is reserved between one end of each of the two segmentation columns 9, which is far away from the inner wall of the shell 1, and the rotating shaft 2, so that small oil passing holes are formed.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.