CN207260825U - A kind of damper with overload protection arrangement - Google Patents
A kind of damper with overload protection arrangement Download PDFInfo
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- CN207260825U CN207260825U CN201721169868.XU CN201721169868U CN207260825U CN 207260825 U CN207260825 U CN 207260825U CN 201721169868 U CN201721169868 U CN 201721169868U CN 207260825 U CN207260825 U CN 207260825U
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- shaft
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- housing
- piston
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Abstract
It the utility model is related to a kind of damper with overload protection arrangement; including housing, shaft and piston; wherein; piston is rotatably arranged in housing; it can be rotated synchronously at the same time with shaft and opposite shaft is sheathed in shaft and the gap for thick liquid flowing is equipped between shaft with vertically moving; shaft collectively forms closed cavity with housing; filling damping oil in cavity; it is characterized in that; the shaft is equipped with the pressure relief opening and pressure release passage communicated with cavity, and flexible buffering piece is equipped with pressure release passage.The utility model can greatly reduce the infringement that impulsive torque produces damper under non-normal use state using the above structure, lift the service life of damper.
Description
Technical field
It the utility model is related to bathroom field, more particularly to a kind of damper with overload protection arrangement.
Background technology
Damper is in actual use, it may occur that non-normal use of the user in damping direction fast application active force
Situation, in this case, Damping rotation shaft are severely affected moment of torsion, while damper housing is also subject to very big internal hydraulic pressure
Power.This shaft for being easy to cause damper is broken, and the damage that outer casing rupture etc. can not recover, seriously affects making for damper
Use the service life.
Therefore, said structure is further improved.
Utility model content
The purpose of this utility model is to provide a kind of damper with overload protection arrangement, can greatly reduce improper
The infringement that impulsive torque produces damper under use state, lifts the service life of damper.
To achieve these goals, the technical solution of the utility model is as follows：
A kind of damper with overload protection arrangement, including housing, shaft and piston, wherein, piston is rotationally set
In in housing, while can be rotated synchronously with shaft and opposite shaft be sheathed in shaft and is equipped between shaft with vertically moving
For the gap of thick liquid flowing, shaft collectively forms closed cavity with housing, fills damping oil in cavity, and set in shaft
There is the pressure relief opening and pressure release passage communicated with cavity, flexible buffering piece is equipped with pressure release passage.
Preferably, the shaft includes footstalk, drive section and connection footstalk and the linkage section of drive section, the flexibility
Bolster is arranged at the footstalk of shaft, and trip bolt is equipped with the outside of flexible buffering piece.
Using the above scheme, the utility model at shaft by setting overcurrent protection structure, by the deformation of elastomer,
The pressure of inside cavity is absorbed so as to avoid shaft fracture and the risk of outer casing rupture, extend damper uses the longevity
Life.
Brief description of the drawings
Fig. 1 is the integrally-built cross-sectional schematic of the utility model.
Fig. 2 is cross-sectional schematic of the utility model in use state.
Fig. 3 is located at working state figure during location A for the trip bolt of the utility model.
Fig. 4 is located at working state figure during B location for the trip bolt of the utility model.
Fig. 5 is no overload protection and the damper for having overload protection, its damping loads end is with high pressure chest pressure change
Curve comparison figure.
Fig. 6 is the linear relationship that rotary speed and damping loads are damped when trip bolt is located at location A and B location respectively
Figure.
Embodiment
Below with reference to attached drawing, the technical solution of the utility model and beneficial effect are described in detail.
As shown in Figure 1, a kind of damper with overload protection arrangement, including housing 1, shaft 2 and piston 3.
Wherein, piston 3 is equipped with external screw thread, and 1 inner wall of housing is at least partly equipped with internal thread, and piston 3 is arranged in housing 1 simultaneously
With 1 threaded engagement of housing.Shaft 2 collectively forms closed cavity with housing 1, and damping oil is filled in cavity.Shaft 2 includes footstalk
21st, drive section 22 and connection footstalk 21 and the linkage section 23 of drive section 22, shaft 2 pass through piston 3, its drive section 22 is used to drive
Piston 3 is with respect to 1 helical rotation of housing, and drive section 22 was additionally provided with beam hanger 24.Crossing the axial direction of beam hanger 24, to be provided with gradual change type oblique
Groove.The gradual change type skewed slot is used for controlling the flowing velocity of damping oil in the cavity.
The gap for damping oil flowing is equipped between above-mentioned housing 1, shaft 2 and piston 3.
When shaft 2 produces relative rotation with respect to housing 1, piston 3 produces straight skidding, at this time, damping oil with respect to shaft 2
One end of outflow is higher-pressure region, and one end that damping oil flows into is low-pressure area.
Footstalk 21 is equipped with the pressure release passage 211 communicated with cavity, and shaft 2, which is located at the linkage section 23 inside housing 1, to be set
There is the pressure relief opening 212 of connection pressure release passage 211 and cavity.Pressure release passage 211 is stepped, inside sets flexible buffering piece 4, and flexibility is slow
The outside of stamping 4 makes its spacing in pressure release passage 211 by a trip bolt 5.Specifically, flexible buffering piece 4 can be rubber
The materials such as material NBR, EPDM, silica gel or with hollow injection molding plastic part, plastics can be PP, PE,
PVC etc..
The operation principle of said structure is as follows：
As shown in Fig. 2, when damper is subject to quickly to suppress under operating mode, damping oil is flowed from higher-pressure region 10 to low-pressure area 20,
10 pressure of higher-pressure region sharply increases, because cavity and pressure release passage 211 communicate so that the hydraulic pressures in pressure release passage 211 are anxious
Increase severely and add, promote flexible buffering piece 4 to deform, flexible buffering piece 4 absorbs impact energy, so as to limit the pressure of higher-pressure region 10
Increase degree, and then protect cavity and shaft 2 not to be damaged.
In addition, because the outside of flexible buffering piece 4 has set trip bolt 5, the trip bolt 5 be as needed it is adjustable, such as
Shown in Fig. 3, Fig. 4 and Fig. 6, by adjusting the position of trip bolt 5, flexible buffering piece 4 can be made to possess different pretightning forces, from
And adaptation can be made according to the shaft strength and casing rigidity of different product.Meanwhile because change the pressure chamber of cavity
Artesian condition, can change damper to the feedback from shaft load, so as to obtain different rotary speeies, can meet user couple
The fine setting demand of damper rotary speed parameter.
It can be seen that there is the damper for adding overload protection design than the damper that no overload protection designs by Fig. 5,
Its damping loads end rotary speed is more gentle with the increased speedup of high pressure cavity pressure.
Above example is only to illustrate the technological thought of the utility model, it is impossible to the protection model of the utility model is limited with this
Enclose, it is every according to the utility model proposes technological thought, any improvement done on the basis of technical solution and equivalent substitution,
Each fall within scope of protection of the utility model.
Claims (2)
1. a kind of damper with overload protection arrangement, including housing, shaft and piston, wherein, piston is rotatably arranged in
In housing, while simultaneously opposite shaft can be rotated synchronously with shaft and is sheathed on vertically moving in shaft and confession is equipped between shaft
The gap of thick liquid flowing, shaft collectively form closed cavity with housing, damping oil are filled in cavity, it is characterised in that
The shaft is equipped with the pressure relief opening and pressure release passage communicated with cavity, and flexible buffering piece is equipped with pressure release passage.
2. a kind of damper with overload protection arrangement as claimed in claim 1, it is characterised in that the shaft includes
Footstalk, drive section and connection footstalk and the linkage section of drive section, the flexible buffering piece are arranged at the footstalk of shaft, and flexibility is slow
Trip bolt is equipped with the outside of stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169868.XU CN207260825U (en) | 2017-09-13 | 2017-09-13 | A kind of damper with overload protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169868.XU CN207260825U (en) | 2017-09-13 | 2017-09-13 | A kind of damper with overload protection arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207260825U true CN207260825U (en) | 2018-04-20 |
Family
ID=61920601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721169868.XU Active CN207260825U (en) | 2017-09-13 | 2017-09-13 | A kind of damper with overload protection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207260825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476695A (en) * | 2017-09-13 | 2017-12-15 | 厦门德浦精密科技有限公司 | A kind of damper with overload protection arrangement |
-
2017
- 2017-09-13 CN CN201721169868.XU patent/CN207260825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476695A (en) * | 2017-09-13 | 2017-12-15 | 厦门德浦精密科技有限公司 | A kind of damper with overload protection arrangement |
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