CN107476695A - A kind of damper with overload protection arrangement - Google Patents
A kind of damper with overload protection arrangement Download PDFInfo
- Publication number
- CN107476695A CN107476695A CN201710820235.9A CN201710820235A CN107476695A CN 107476695 A CN107476695 A CN 107476695A CN 201710820235 A CN201710820235 A CN 201710820235A CN 107476695 A CN107476695 A CN 107476695A
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- damper
- cavity
- housing
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013016 damping Methods 0.000 claims abstract description 14
- 230000003139 buffering effect Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 230000001360 synchronised effect Effects 0.000 claims abstract description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of damper with overload protection arrangement; including housing, rotating shaft and piston; wherein; piston is rotatably arranged in housing; it can be sheathed on vertically moving in rotating shaft with rotating shaft synchronous axial system and relative rotating shaft simultaneously and the gap for thick liquid flowing is provided between rotating shaft; rotating shaft collectively forms closed cavity with housing; filling damping oil in cavity; it is characterized in that; described rotating shaft is provided with the pressure relief opening and pressure release passage communicated with cavity, and flexible buffering piece is provided with pressure release passage.The present invention can greatly reduce impulsive torque under non-normal use state using said structure and, to being damaged caused by damper, lift the service life of damper.
Description
Technical field
The present invention relates 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 user quickly applies the non-normal use of active force in damping direction
Situation, in this case, Damping rotation shaft are severely affected moment of torsion, while damper housing is also by very big internal hydraulic pressure
Power.This easily causes the rotating shaft of damper to be broken, and the damage that outer casing rupture etc. can not recover, has a strong impact on making for damper
Use the life-span.
Therefore, said structure is further improved.
The content of the invention
It is an object of the invention to provide a kind of damper with overload protection arrangement, non-normal use can be greatly reduced
Impulsive torque lifts the service life of damper to being damaged caused by damper under state.
To achieve these goals, technical scheme is as follows：
A kind of damper with overload protection arrangement, including housing, rotating shaft and piston, wherein, piston is rotatably arranged in shell
In vivo, while it can be sheathed on vertically moving in rotating shaft with rotating shaft synchronous axial system and relative rotating shaft and be provided between rotating shaft for viscous
The gap of thick liquid flowing, rotating shaft and housing collectively form closed cavity, filling damping oil in cavity, and rotating shaft be provided with
The pressure relief opening and pressure release passage that cavity communicates, pressure release passage is interior to be provided with flexible buffering piece.
Preferably, described rotating shaft includes footstalk, drive section and connection footstalk and the linkage section of drive section, described flexibility
Bolster is provided with trip bolt at the footstalk of rotating shaft on the outside of flexible buffering piece.
Using such scheme, the present invention, by the deformation of elastomer, is absorbed by setting overcurrent protection structure at rotating shaft
The pressure of inside cavity extends the service life of damper so as to avoiding the risk of rotating shaft fracture and outer casing rupture.
Brief description of the drawings
Fig. 1 is the integrally-built cross-sectional schematic of the present invention.
Fig. 2 is cross-sectional schematic of the present invention in use state.
Fig. 3 is working state figure when trip bolt of the invention is located at location A.
Fig. 4 is working state figure when trip bolt of the invention is located at B location.
Fig. 5 is no overload protection and the damper for having overload protection, and 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 accompanying drawing, technical scheme and beneficial effect are described in detail.
As shown in figure 1, a kind of damper with overload protection arrangement, including housing 1, rotating shaft 2 and piston 3.
Wherein, piston 3 is provided with external screw thread, and the inwall of housing 1 is at least partly provided with internal thread, and piston 3 is located in housing 1 simultaneously
With the threaded engagement of housing 1.Rotating shaft 2 collectively forms closed cavity with housing 1, and damping oil is filled in cavity.Rotating shaft 2 includes footstalk
21st, drive section 22 and connection footstalk 21 and the linkage section 23 of drive section 22, rotating shaft 2 pass through piston 3, and its drive section 22 is used to drive
Piston 3 is with respect to the helical rotation of housing 1, and drive section 22 was additionally provided with beam hanger 24.Crossing the axially arranged of beam hanger 24 has gradual change type oblique
Groove.The gradual change type skewed slot is used for controlling flowing velocity of the damping oil in cavity.
The gap for being available for damping oil to flow is equipped between above-mentioned housing 1, rotating shaft 2 and piston 3.
When rotating shaft 2 produces relative rotation with respect to housing 1, piston 3 produces straight skidding, now, damping oil with respect to rotating 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 provided with the pressure release passage 211 communicated with cavity, and rotating 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 suppressed under operating mode by quickly, damping oil is flowed from higher-pressure region 10 to low-pressure area 20, high pressure
The pressure of area 10 sharply increases, because cavity and pressure release passage 211 communicate so that the hydraulic pressures in pressure release passage 211 drastically increase
Add, promote flexible buffering piece 4 to deform, flexible buffering piece 4 absorbs impact energy, so as to limit the increase of the pressure of higher-pressure region 10
Degree, and then protect cavity and rotating shaft 2 not to suffer damage.
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, damper can be changed to the feedback from shaft load, so as to obtain different rotary speeies, user couple can be met
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.
The technological thought of above example only to illustrate the invention, it is impossible to protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any improvement done on the basis of technical scheme and equivalent substitution, this hair is each fallen within
Within bright protection domain.
Claims (2)
1. a kind of damper with overload protection arrangement, including housing, rotating shaft and piston, wherein, piston is rotatably arranged in
In housing, while it can be sheathed on vertically moving in rotating shaft and be provided between rotating shaft with rotating shaft synchronous axial system and relative rotating shaft and supply
The gap of thick liquid flowing, rotating shaft collectively form closed cavity with housing, damping oil are filled in cavity, it is characterised in that
Described rotating shaft is provided with the pressure relief opening and pressure release passage communicated with cavity, and flexible buffering piece is provided with pressure release passage.
2. a kind of damper with overload protection arrangement as claimed in claim 1, it is characterised in that described rotating shaft includes
Footstalk, drive section and connection footstalk and the linkage section of drive section, for described flexible buffering piece at the footstalk of rotating shaft, flexibility is slow
Trip bolt is provided with the outside of stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820235.9A CN107476695A (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 |
|---|---|---|---|
| CN201710820235.9A CN107476695A (en) | 2017-09-13 | 2017-09-13 | A kind of damper with overload protection arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107476695A true CN107476695A (en) | 2017-12-15 |
Family
ID=60583939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710820235.9A Pending CN107476695A (en) | 2017-09-13 | 2017-09-13 | A kind of damper with overload protection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107476695A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547884A (en) * | 2018-06-14 | 2018-09-18 | 广东东箭汽车科技股份有限公司 | The damper and a kind of electric tail gate strut of a kind of overload protection |
| CN110141149A (en) * | 2019-06-27 | 2019-08-20 | 泉州科发卫浴有限公司 | A kind of adjustable damper with overload protection function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092126A1 (en) * | 2001-01-16 | 2002-07-18 | Teh-Tien Chen | Damper for a pivot door |
| US20050246860A1 (en) * | 2004-05-10 | 2005-11-10 | Tan-Cheng Huang | Door closer |
| CN102472072A (en) * | 2009-07-24 | 2012-05-23 | 多玛两合有限公司 | Door closer |
| CN202266141U (en) * | 2011-08-29 | 2012-06-06 | 广州澳森液压元件有限公司 | Unidirectional rotation type adjustable buffer of semi-automatic sliding door |
| CN102587778A (en) * | 2012-01-17 | 2012-07-18 | 李飞勇 | Variable resistance damper |
| CN103527027A (en) * | 2013-09-18 | 2014-01-22 | 陈朝朗 | Rotary damper capable of adjusting torque force |
| CN105041092A (en) * | 2015-08-25 | 2015-11-11 | 厦门德浦精密科技有限公司 | Plunger type damper and rotating shaft thereof |
| CN207260825U (en) * | 2017-09-13 | 2018-04-20 | 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 CN201710820235.9A patent/CN107476695A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092126A1 (en) * | 2001-01-16 | 2002-07-18 | Teh-Tien Chen | Damper for a pivot door |
| US20050246860A1 (en) * | 2004-05-10 | 2005-11-10 | Tan-Cheng Huang | Door closer |
| CN102472072A (en) * | 2009-07-24 | 2012-05-23 | 多玛两合有限公司 | Door closer |
| CN202266141U (en) * | 2011-08-29 | 2012-06-06 | 广州澳森液压元件有限公司 | Unidirectional rotation type adjustable buffer of semi-automatic sliding door |
| CN102587778A (en) * | 2012-01-17 | 2012-07-18 | 李飞勇 | Variable resistance damper |
| CN103527027A (en) * | 2013-09-18 | 2014-01-22 | 陈朝朗 | Rotary damper capable of adjusting torque force |
| CN105041092A (en) * | 2015-08-25 | 2015-11-11 | 厦门德浦精密科技有限公司 | Plunger type damper and rotating shaft thereof |
| CN207260825U (en) * | 2017-09-13 | 2018-04-20 | 厦门德浦精密科技有限公司 | A kind of damper with overload protection arrangement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547884A (en) * | 2018-06-14 | 2018-09-18 | 广东东箭汽车科技股份有限公司 | The damper and a kind of electric tail gate strut of a kind of overload protection |
| CN108547884B (en) * | 2018-06-14 | 2023-08-08 | 广东东箭汽车科技股份有限公司 | Overload protection damper and electric tail gate stay bar |
| CN110141149A (en) * | 2019-06-27 | 2019-08-20 | 泉州科发卫浴有限公司 | A kind of adjustable damper with overload protection function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107939897B (en) | A kind of method and damper of the adjustable speed limit of shear thickening damper | |
| US9926918B2 (en) | Energy-recuperating fluid vibration damper | |
| CN107476695A (en) | A kind of damper with overload protection arrangement | |
| KR20160119820A (en) | Cylinder device | |
| CN106438815B (en) | A kind of automatically controlled adaptive damping rotating hydraulic damper | |
| CN104564603A (en) | Adjusting device for an adjusting piston of a variable clearance space of a reciprocating compressor | |
| WO2018171069A1 (en) | Bottom foot for household appliance, and household appliance | |
| CN207260825U (en) | A kind of damper with overload protection arrangement | |
| CN107327242A (en) | A kind of assistance type damper, damper assembly and cover board arrangement | |
| CN101975006B (en) | Multifunctional floor spring | |
| CN106979181A (en) | The energy-efficient hydraulic servo-cylinder controlled with bidirectional buffering and accurate power | |
| CN102913506B (en) | A kind of ball strand is built in piston rod type oil hydraulic cylinder | |
| CN106192930B (en) | A kind of elastic water sealed device of down-the-hole plane gate two-way water stop vibration damping | |
| CN105299126B (en) | A kind of two-stage buffer with temperature-detecting device | |
| CN201547065U (en) | Soft start valve | |
| AU2013354562B2 (en) | Hydraulic cylinder with end position damping | |
| US20150075361A1 (en) | Telescopic actuator | |
| CN107109961B (en) | Actuating drive for a control valve, in particular a steam turbine control valve, and method for operating the actuating drive | |
| CN107052283A (en) | A kind of crystallizer vibration control device | |
| CN215950224U (en) | Buffer capable of rotationally adjusting damping | |
| CN205370877U (en) | Fluid machinery | |
| CN109667876A (en) | A kind of oil-pressure damper piston and oil-pressure damper | |
| CN201908835U (en) | Variable-displacement vortex compressor | |
| CN103263957B (en) | Impact rack adjusting device and impact crusher | |
| CN207275939U (en) | A kind of buffer unit being installed in stair shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171215 |
|
| WD01 | Invention patent application deemed withdrawn after publication |