CN212080011U

CN212080011U - One-way limited angle rotary damper

Info

Publication number: CN212080011U
Application number: CN202020383071.5U
Authority: CN
Inventors: 何雷; 冯垚骏
Original assignee: SHANGHAI JIEYINGTU NEW MATERIAL TECHNOLOGY CO LTD
Current assignee: SHANGHAI JIEYINGTU NEW MATERIAL TECHNOLOGY CO LTD
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-12-04
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses an one-way finite angle rotary damper, which comprises a shell and a rotating shaft which is rotatably connected inside the shell, wherein the shell is arranged on a part which can rotate around a box body connected with the shell, the shell comprises an outer barrel, an inner barrel which is coaxially arranged in the outer barrel, and an annular bottom plate which is connected between the outer barrel and the inner barrel, the outer barrel, the inner barrel and the annular bottom plate are enclosed to form an annular cavity, one end of the annular cavity is sealed by the annular bottom plate, the other end of the annular cavity is open, viscous fluid is filled in the annular cavity, a limiting column is arranged in the outer barrel, and the limiting column is connected; the pivot is including the excircle portion that is the tube-shape, locate two bumping posts of excircle portion and locate the oil groove of crossing in the middle of two bumping posts. The utility model discloses can still can keep better damping effect after closing the lid for a long time to can realize that the individual setting angle produces damping force, the no damping effect of reverse setting angle is set for little torsion effect according to the demand.

Description

One-way limited angle rotary damper

Technical Field

The utility model relates to a attenuator technical field, concretely relates to one-way finite angle rotary damper.

Background

The automobile armrest box comprises a box body used for storing articles and an upper cover connected to the box body, and in order to prevent the upper cover from being violently closed due to the weight, a damping device needs to be arranged on the automobile armrest box, so that the upper cover body can be slowly closed.

At present, the damping device of car handrail case is usually through two-way rotatory damping, and this kind of structure dress is deposited the upper cover and is not only overcome the upper cover dead weight and still overcome the damping force of damping itself at the opening in-process to closing the upper cover in-process because the upper cover focus arm of force changes, the power value that the upper cover produced is at the grow, but this kind of damping can only provide invariable damping force, thereby can appear closing the phenomenon that the process is faster and faster. Therefore, improvements in the prior art are needed.

SUMMERY OF THE UTILITY MODEL

The application provides a one-way finite angle rotary damper, can be opening the upper cover in-process and not bearing the power value that the attenuator produced to close the upper cover back damper and can provide the effect of the damping force of corresponding increase according to the change of the upper cover focus arm of force.

In order to achieve the above object, the present invention provides a one-way limited angle rotation damper, which comprises a housing and a rotating shaft rotatably connected to the inside of the housing, wherein the housing is mounted on a component capable of rotating around a box body connected with the housing;

the shell comprises an outer barrel, an inner barrel coaxially arranged in the outer barrel and an annular bottom plate connected between the outer barrel and the inner barrel, wherein an annular cavity is defined by the outer barrel, the inner barrel and the annular bottom plate, one end of the annular cavity is closed by the annular bottom plate, the other end of the annular cavity is in an open shape and is filled with viscous fluid, and a limiting column is arranged in the outer barrel and is connected with the inner wall of the outer barrel;

the rotating shaft comprises a cylindrical excircle part, two retaining columns arranged on the excircle part and an oil passing groove arranged between the two retaining columns;

the two blocking columns are matched with the two valve plates and inserted into the annular cavity, the end cover is matched with the shell outer barrel in an ultrasonic welding mode, the viscous fluid in the annular cavity generates damping force or no damping force through forward rotation or reverse rotation of the rotating shaft, and the upper cover is closed or opened under the condition that the damping force or no damping force exists.

Furthermore, the outer side of the outer cylinder is provided with an installation structure extending along the axial direction of the shell, and the shell is fixedly installed on a box body of the automobile armrest box through the installation structure.

Further, the oil passing groove is axially arranged on the outer side of the outer circle part along the outer circle part.

Furthermore, a small sealing ring is arranged at the matching position of the cylinder opening in the shell and the rotating shaft.

Furthermore, a large sealing ring is arranged at the matching position of the rotating shaft head and the end cover.

Further, the outer circle of the rotating shaft is a variable ellipse, and the torque variation realized by the viscous fluid is determined by the outer circle of the rotating shaft.

Furthermore, the valve plate is in when the rotating shaft rotates and collides with the limiting column, and the damping stops.

Furthermore, the open slot of the valve plate is matched with the open slot of the retaining column to form an oil passing slot when the rotating shaft rotates reversely, the viscous fluid flows back in the oil passing slot to realize unidirectional torque, and the size of the reverse torque is adjusted by adjusting the sizes of the open slot of the valve plate and the open slot of the retaining column.

Further, the viscous fluid is silicone oil.

Compared with the prior art, the utility model discloses a pivot drives the rotation of valve block in the viscous fluid of annular chamber internal, and viscous fluid produces damping force to valve block portion, realizes adjusting damping force value size through changing silicon oil viscosity, obtains the buffering effect of different power values; the excircle of the rotating shaft is a gradually changed ellipse, so that the effect of changing the torque force to be larger and larger can be realized when the viscous fluid is extruded in the rotating process; when the rotating shaft rotates reversely, the viscous fluid can quickly pass through the open slot of the blocking column of the rotating shaft and the open slot at one side of the valve plate to generate a very small and negligible damping force, so that the effect of no damping during reverse rotation is realized; the size of the opening groove of the rotating shaft and the valve plate can be adjusted to realize the adjustment of the size of the reverse force value.

Drawings

Fig. 1 is a schematic perspective view of the unidirectional limited angle rotary damper of the present invention;

FIG. 2 is a schematic perspective view of the housing of FIG. 1;

FIG. 3 is a schematic perspective view of the spindle of FIG. 1;

FIG. 4 is a schematic perspective view of the valve plate shown in FIG. 1;

FIG. 5 is a transverse cross-sectional view of FIG. 1;

fig. 6 is a longitudinal sectional view of fig. 1.

Reference is made to the following in corresponding reference numbers in the drawings of the specification:

the oil filter comprises a shell 1, a rotating shaft 2, a valve plate 3, an end cover 4, a large sealing ring 5, a small sealing ring 6, an outer cylinder 101, an inner cylinder 102, a limiting column 103, an annular bottom plate 104, an annular cavity 105, a mounting structure 106, a retaining column 201, an outer circle part 202 and an oil passing groove 2011.

Detailed Description

In order to make the technical means, the inventive features, the objectives and the functions of the present invention easy to understand, the present invention will be further described with reference to the following specific drawings.

The utility model discloses a first embodiment provides an one-way finite angle rotary damper, wide application for example can play the effect of buffering around the rotatory part of its box that connects such as lid, handrail on, the utility model discloses use the rotary damper who is applied to on the car handrail case to explain as the example, the car handrail case is including the box that is used for the storing and connect the end cover on the box. As shown in fig. 1 and 2, the damper includes a housing 1 and a rotating shaft 2 rotatably connected to the inside of the housing 1, wherein the housing 1 can be fixedly mounted on a box body of an armrest box of an automobile through a mounting structure 106;

the casing 1 is generally an integral piece, and includes an outer cylinder 101, an inner cylinder 102 coaxially disposed in the outer cylinder 101, and an annular bottom plate 104 connected between the outer cylinder 101 and the inner cylinder 102, the outer cylinder 101, the inner cylinder 102, and the annular bottom plate 104 enclose an annular cavity 105, one end of the annular cavity 105 is closed by the annular bottom plate 104, the other end is open, viscous fluid such as silicone oil is filled in the annular cavity 105, a limiting column 103 is disposed in the outer cylinder 101, and two limiting columns 103 are symmetrically connected to the inner wall of the outer cylinder 101 along the central axis of the outer cylinder 101;

as shown in fig. 3, the rotating shaft 2 includes a cylindrical outer circle portion 202, two retaining columns 201 disposed on the outer circle portion 202, and an oil passing groove 2011 disposed between the two retaining columns 201, wherein the oil passing groove 2011 is disposed outside the outer circle portion 202 along the axial direction of the outer circle portion 202;

the two retaining columns 201 are matched with the two valve plates 3 and inserted into the annular cavity 105, the end cover 4 is in ultrasonic welding fit with the outer cylinder 101 of the shell 1, viscous fluid in the annular cavity 105 generates damping force or no damping force through forward rotation or reverse rotation of the rotating shaft 2, and the end cover 4 is closed or opened under the condition of the damping force or the no damping force.

Specifically, as shown in fig. 3 to 5, when the rotating shaft 2 rotates, the non-opening side of the valve plate 3 rotates in sealing fit with the blocking column 201 of the rotating shaft 2, and the viscous fluid is stirred in the annular cavity 105 to generate a shearing force, so that the viscous fluid forms a damping force on the non-opening side of the valve plate 3, the rotating shaft 2 rotates slowly, and the upper cover is closed slowly; when the upper cover is opened, the rotating shaft 2 rotates reversely, the opening side of the valve block 3 is matched with the opening of the blocking column 201 of the rotating shaft 2 to form an oil passing groove, and in the rotating process, viscous fluid in the annular cavity 105 quickly passes through the oil passing groove 2011 formed by the opening side of the blocking column and the opening side of the valve block 3, so that the damper is free of damping force in the opening process, and the upper cover is quickly opened.

In addition, the excircle 202 of the rotating shaft 2 is an elliptical gradual change structure, when the rotating shaft 2 rotates, the non-opening side of the valve plate 3 rotates in sealing fit with the baffle column 201 of the rotating shaft 2, and the excircle 202 of the rotating shaft 2 is an elliptical gradual change structure in the rotating process, so that the torque gradual change effect is realized on the extrusion of viscous fluid.

During specific installation, as shown in fig. 6, firstly, a proper amount of viscous fluid is injected into the annular cavity 105, the rotating shaft 2 is matched with the valve plate 3 and then inserted into the shell 1 provided with the small sealing ring 6 and is in rotating connection with the shell, then the large sealing ring 5 is installed with the rotating shaft 2, and finally the end cover 4 is ultrasonically welded with the shell 1. The shell 1 is mounted on the body of the armrest box of the automobile through the mounting structure 106, and finally, the upper cover of the armrest box of the automobile is connected through the rotating shaft 2.

In addition, the greater the viscosity of the viscous fluid, the greater the damping force generated, and the slower the upper cover closes. The upper covers with different weights are selected from viscous fluids with different viscosities so as to prevent the damping force generated by the fluid with low viscosity from being insufficient to resist the self weight of the upper covers and to prevent the upper covers from being closed violently due to the fact that the upper covers are too heavy; or prevent the upper cover from closing too slowly due to the damping force generated by the fluid with large viscosity because the upper cover is too light.

The utility model discloses a rotary damper of car handrail case, rational in infrastructure, simple to use can still keep better damping effect after closing the lid for a long time to can realize that the individual setting angle produces the damping force, the little torsion effect is set for according to the demand to the undamped effect of reverse setting angle.

The above description has been made of specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. A unidirectional limited angle rotation damper is characterized in that: the device comprises a shell and a rotating shaft which is rotatably connected inside the shell, wherein the shell is arranged on a part which can rotate around a box body connected with the shell;

2. The unidirectional limited angle rotation damper of claim 1, wherein: the outer side of the outer barrel is provided with an installation structure extending along the axial direction of the shell, and the shell is fixedly installed on a box body of the automobile armrest box through the installation structure.

3. The unidirectional limited angle rotation damper of claim 1, wherein: the oil passing groove is axially arranged on the outer side of the excircle part along the excircle part.

4. The unidirectional limited angle rotation damper of claim 1, wherein: and a small sealing ring is arranged at the matching position of the cylinder opening in the shell and the rotating shaft.

5. The unidirectional limited angle rotation damper of claim 1, wherein: and a large sealing ring is arranged at the matching position of the rotating shaft head and the end cover.

6. The unidirectional limited angle rotation damper of claim 1, wherein: the excircle of the rotating shaft is a variable ellipse, and the torque variation realized by the viscous fluid is determined by the excircle of the rotating shaft.

7. The unidirectional limited angle rotation damper of claim 1, wherein: the valve block is in when the rotating shaft rotates and collides with the limiting column, the damping stops.

8. The unidirectional limited angle rotation damper of claim 7, wherein: the opening groove of the valve plate is matched with the opening groove of the retaining column to form an oil passing groove when the rotating shaft rotates reversely, the viscous fluid flows back in the oil passing groove to realize unidirectional torque, and the size of the reverse torque is adjusted by adjusting the sizes of the opening groove of the valve plate and the opening groove of the retaining column.

9. The unidirectional limited angle rotation damper according to any one of claims 1 to 8, wherein: the viscous fluid is silicone oil.