CN111288109A - Damping piston assembly - Google Patents
Damping piston assembly Download PDFInfo
- Publication number
- CN111288109A CN111288109A CN202010224534.8A CN202010224534A CN111288109A CN 111288109 A CN111288109 A CN 111288109A CN 202010224534 A CN202010224534 A CN 202010224534A CN 111288109 A CN111288109 A CN 111288109A
- Authority
- CN
- China
- Prior art keywords
- damping
- piston
- sliding sleeve
- piston assembly
- cover
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
- F16F9/5123—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity responsive to the static or steady-state load on the damper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
- F16F9/5126—Piston, or piston-like valve elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
Abstract
The invention discloses a damping piston assembly, which comprises a piston body, a sliding sleeve and an elastic part, wherein the piston body is provided with a damping channel communicated with an upper cavity and a lower cavity of an outer cylinder, the bottom of the damping channel is provided with a plurality of groups of lower liquid passing holes which are arranged along the axial direction and communicated with the lower cavity of the outer cylinder, the sliding sleeve can be sleeved on the piston body in a vertically sliding manner, the elastic part provides elastic force for limiting the sliding sleeve to slide upwards, and when the piston assembly moves downwards in the outer cylinder, the sliding sleeve is driven by damping liquid in the lower cavity of the outer cylinder to move upwards relative to the piston body so as to close the lower liquid passing holes one by one from bottom; the damping piston assembly can change the damping in the damper in a self-adaptive manner according to the road condition, has good adaptability to the road condition, gradually increases the damping force in the damping process, has smooth change of the damping force, improves the damping effect and the riding comfort, and can effectively prevent the piston assembly from touching the bottom in the outer cylinder in a bumpy road condition.
Description
Technical Field
The invention belongs to the technical field of automobile manufacturing, and relates to a damping piston assembly.
Background
In order to quickly attenuate the vibration of a frame and a vehicle body and improve the smoothness and the comfort of the running of an automobile, shock absorbers are arranged on an automobile suspension system, and a bidirectional barrel type shock absorber is widely adopted on the automobile. The damping effect of the shock absorber directly influences the running stability of an automobile and the service life of other parts, the damping of the current commonly used bidirectional-acting cylinder shock absorber is usually constant, and the shock absorber has poor self-adaptability to different driving road conditions and poor damping effect.
Therefore, based on the above problems, there is a need for a damping piston assembly that can gradually change damping in a shock absorber based on road condition adaptation, has good adaptability to road conditions, and improves a damping effect.
Disclosure of Invention
In view of this, the invention provides a damping piston assembly, which can gradually change damping in a shock absorber based on road condition self-adaptation, has good adaptability to road conditions, and improves the damping effect.
The damping piston assembly comprises a piston body, a sliding sleeve and an elastic part, wherein the piston body is provided with a damping channel communicated with an upper cavity and a lower cavity of an outer cylinder, the bottom of the damping channel is provided with a plurality of groups of lower liquid passing holes which are axially arranged and communicated with the lower cavity of the outer cylinder, the sliding sleeve can be sleeved on the piston body in an up-and-down sliding manner, the elastic part provides elastic force for limiting the sliding sleeve to slide upwards, and when the piston assembly moves downwards in the outer cylinder, the sliding sleeve is driven by damping liquid in the lower cavity of the outer cylinder to move upwards relative to the piston body so as to close the lower liquid passing holes one by one from bottom to.
Furthermore, the piston body includes the piston cover of lower extreme open-ended, installs the damping rod in the piston cover, and the damping rod passes piston cover upper end and is used for connecting on the traveller, and the sliding sleeve overcoat is on the damping rod and with damping rod sliding seal cooperation, and the damping passageway is seted up on the damping rod.
Further, the lower end of the damping rod is provided with a limiting flange which protrudes outwards in the radial direction.
Furthermore, a damping gap is formed between the outer circle of the sliding sleeve and the inner circle of the piston cover.
Further, the excircle of the piston cover is of a stepped structure with a small upper part and a large lower part, and the excircle of the large circular section of the piston cover is used for being in sealing sliding fit with the excircle of the outer barrel.
Further, the inner circle of the piston outer cover is of a stepped structure with a small top and a large bottom, and the sliding sleeve is positioned in the large-diameter section of the inner cavity of the piston cover.
Further, the outer circle of the sliding sleeve is of a stepped structure with a small top and a large bottom, the outer diameter of the large-diameter section of the sliding sleeve is smaller than the inner diameter of the large-diameter section of the piston housing and larger than the inner diameter of the small-diameter section of the piston housing, the outer diameter of the small-diameter section of the sliding sleeve is smaller than the inner diameter of the small-diameter section of the piston housing, and a damping gap is formed between the outer circle of the large-diameter section of the sliding sleeve and the inner circle of the large-.
Furthermore, the bottom of the sliding sleeve is provided with a conical guide inclined plane inclined towards the excircle of the sliding sleeve.
Further, the upper end of the sliding sleeve is provided with an annular groove which is sunken downwards and attached to and surrounds the damping rod.
Furthermore, the elastic part is positioned in the piston cover and sleeved on the damping rod, and the upper end and the lower end of the elastic part are respectively connected to the top of the piston cover and the top of the sliding sleeve.
The invention has the beneficial effects that:
the damping piston assembly can change damping in the shock absorber in a self-adaptive manner according to road conditions, has good adaptability to the road conditions, gradually increases damping force in the damping process, changes the damping force smoothly, improves the damping effect and improves riding comfort, can effectively prevent the piston assembly from touching the bottom in the outer cylinder in bumpy road conditions, can achieve the purposes of preventing touching the bottom and protecting the piston assembly from being damaged by touching the bottom, and improves the controllability, the comfort and the stability as well as the safety and the reliability.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic view of a damping piston assembly;
FIG. 2 is a schematic view of a damping piston assembly used in a shock absorber;
Detailed Description
FIG. 1 is a schematic view of a damping piston assembly; FIG. 2 is a schematic view of a damping piston assembly used in a shock absorber;
as shown in the figure: the embodiment provides a damping piston assembly, which comprises a sliding column 1, an outer cylinder 2, a piston assembly and a damping main spring 3, the sliding column is sleeved in the outer cylinder, the piston assembly is connected on the sliding column and is in axial sliding sealing fit with the inner circle of the outer cylinder, the damping main spring 3 is sleeved outside the sliding column and the outer cylinder to provide elastic damping force for the sliding column, the piston assembly comprises a piston body, a sliding sleeve 4 and an elastic piece 5, the piston body is connected on the sliding column, a damping channel 6 communicated with the upper chamber and the lower chamber of the outer cylinder is arranged on the piston body, the bottom of the damping channel is provided with a plurality of groups of lower liquid passing holes 6a which are arranged along the axial direction and communicated with the lower chamber of the outer cylinder, the sliding sleeve can be sleeved on the piston body in an up-and-down sliding manner, the elastic piece provides elastic force for limiting the sliding sleeve to slide upwards, when the damping rod moves downwards, the sliding sleeve is driven by damping fluid in the lower cavity of the outer barrel to move upwards relative to the piston body so as to close the lower fluid passing holes one by one from bottom to top. In the implementation, the up-down direction is consistent with the axial direction of the outer cylinder, the upper end of the sliding column is positioned outside the outer cylinder, the upper end of the sliding column is connected with an upper pressure plate 9, the outer cylinder 2 is connected with a lower supporting plate 10, and the damping main spring is connected between the upper pressure plate and the lower supporting plate. The damping main spring provides buffering for the up-and-down operation of the sliding column, the buffering capacity of the damping device is improved, and the damping main spring is set in the prior art and is not described in detail; an opening at the upper end of the outer cylinder is in sliding sealing fit with the sliding column, the piston assembly divides an inner cavity of the outer cylinder into two independent chambers, namely an upper chamber 2a and a lower chamber 2b, and damping liquid in the lower chamber flows to the upper chamber through a damping channel in the downward process of the sliding column relative to the outer cylinder; when the external road condition is relatively smooth, and the sliding column slowly descends, the sliding sleeve has two running states, when the pressure of damping liquid in the lower cavity cannot overcome the elastic force of the elastic part, the sliding sleeve does not slide relative to the piston body, at the moment, the damping liquid flows through all the lower liquid passing holes, and the other state is that the damping liquid pressure in the lower cavity overcomes the elastic force of the elastic part, so that the sliding sleeve slowly slides upwards relative to the piston body to gradually close the lower liquid passing holes, and the damping force is gradually increased; when external road conditions are bumpy, the sliding and sliding speed is high, the damping liquid pressure in the lower cavity is increased suddenly and drives the sliding sleeve to move upwards and close the lower liquid passing holes gradually, so that the damping force is increased gradually, when the lower liquid passing holes are closed completely, the sliding column stops moving downwards to prevent bottoming, the sliding limit sliding stroke can be adjusted by the number of the lower liquid passing holes, two groups of lower liquid passing holes are arranged in the embodiment, the aperture of the lower liquid passing holes is smaller than that of the damping channel main body, the shock absorber with the structure can change the damping according to the self-adaption of the road conditions, the adaptability to the road conditions is good, the damping force is increased gradually in the shock absorbing process, the damping force changes smoothly, the shock absorbing effect is improved, the riding comfort is improved, the shock absorber can effectively prevent the piston assembly from bottoming in the bumpy road conditions, and can achieve the purpose of preventing bottoming and protecting the piston assembly from being bumpy and, the controllability, the comfort, the stability and the safety and the reliability are improved.
In this embodiment, the piston body includes a piston cover 7 with an opening at a lower end and a damping rod 8 installed in the piston cover, an outer circle of the piston cover is in sealing sliding fit with an inner circle of the outer cylinder, the damping rod passes through the upper end of the piston cover and is connected to the sliding column, the sliding sleeve is sleeved on the damping rod and is in sliding sealing fit with the damping rod, and the damping channel is opened on the damping rod. The piston cover is of a columnar structure, the lower end of the piston cover is open, structures such as a damping rod, a sliding sleeve and an elastic piece are installed in the piston cover, a damping channel which is coaxially arranged is formed in the damping rod, two groups of lower liquid passing holes which are arranged up and down are radially formed in an excircle close to the lower middle of the damping rod, a group of upper liquid passing holes 6b are formed in an excircle close to the upper middle of the damping rod, the upper liquid passing holes are communicated with an upper cavity of an outer cylinder, the lower liquid passing holes are communicated with a lower cavity of the outer cylinder, a thread section is formed in the upper end of the damping rod, and the upper end of the damping rod is in threaded connection with the lower end of a sliding column.
In this embodiment, the lower end of the damping rod has a radially outwardly projecting limit flange 8 a. In a normal state, the sliding sleeve is pressed on the limiting flange through the elastic force of the elastic piece, and the limiting flange is used for limiting the lower end limit position of the sliding stroke of the sliding sleeve.
In this embodiment, a damping gap 11 is formed between the outer circle of the sliding sleeve and the inner circle of the piston cover. The damping clearance is beneficial to improving the damping force, and simultaneously, the sliding sleeve is also beneficial to being driven by high-pressure damping liquid in the lower cavity to slide upwards, so that the aim of gradually and linearly changing the damping force is fulfilled.
In this embodiment, the excircle of the piston cover is of a stepped structure with a small top and a big bottom, and the excircle of the large circle section of the piston cover is in sealing sliding fit with the excircle of the outer barrel. As shown in the attached drawings, the outer circle of the large-diameter section and the outer circle of the small-diameter section of the piston cover are in smooth transition, the large circular section of the piston cover serves as a smooth movable sealing structure in the outer cylinder, the manufacturing precision is high, and the small circular section of the piston cover is not matched with the inner circle of the outer cylinder, so that the manufacturing precision of the small circular section can be reduced, the manufacturing cost of the piston cover is reduced, the height of the piston cover is increased by the structure, the arrangement of parts in the piston cover is facilitated, and a sealing ring can be arranged on the large circular section of the outer circle of the piston cover to improve the sealing effect of the large circular section of the piston cover;
in this embodiment, the inner circle of the piston housing is in a stepped structure with a small top and a large bottom, and the sliding sleeve is located in the large-diameter section of the inner cavity of the piston housing. The piston outer cover is characterized in that the inner cavity small-diameter section of the piston outer cover is provided with a sliding sleeve, and the sliding sleeve is arranged on the inner cavity small-diameter section of the piston outer cover.
In this embodiment, the outer circle of the sliding sleeve is of a stepped structure with a small top and a large bottom, the outer diameter of the large-diameter section of the sliding sleeve 4 is smaller than the inner diameter of the large-diameter section of the piston housing and larger than the inner diameter of the small-diameter section of the piston housing, the outer diameter of the small-diameter section of the sliding sleeve is smaller than the inner diameter of the small-diameter section of the piston housing, and a damping gap is formed between the outer circle of the large-diameter section of the sliding sleeve and the inner circle of the. When the sliding sleeve slides upwards, the small-diameter section of the sliding sleeve can slide into the small-diameter section of the inner cavity of the piston outer cover, the shaft shoulder of the sliding sleeve abuts against the shaft shoulder of the inner cavity of the piston outer cover to form positioning, the limiting position of the upward sliding stroke of the sliding sleeve can be positioned, the sliding precision of the sliding sleeve is improved, and when the sliding sleeve slides to the uppermost end of the sliding stroke, the sliding sleeve is completely closed and the lower liquid passing hole is formed.
In this embodiment, the bottom of the sliding sleeve has a tapered guide slope 4a inclined toward the outer circumference of the sliding sleeve. In the descending process of the sliding column, the conical guide surface is beneficial to guiding the damping liquid, so that the damping liquid flows to the damping gap, and meanwhile, the sliding sleeve is subjected to radial component force by the conical guide surface, and the stability of the sliding sleeve is improved.
In this embodiment, the upper end of the sliding sleeve has a downwardly concave annular groove 4b that fits around the damping rod. The laminating is the annular groove and the laminating of damping rod around the damping rod meaning, combine the figure to show, the annular groove is by the radial fleshing of the inner circle of sliding sleeve and forms, this annular groove can regard as the guiding gutter, when the relative damping rod of sliding sleeve upwards slides and closes down the liquid hole, down cross the liquid hole and be located this recess, do benefit to the downthehole flow of crossing the liquid of the downward of damping liquid, also form less cavity around the lower liquid hole of crossing of waiting to close simultaneously, do benefit to down the closing of crossing the liquid hole.
In this embodiment, the elastic member is located in the piston cover and externally sleeved on the damping rod, and the upper end and the lower end of the elastic member are respectively connected to the top of the piston cover and the top of the sliding sleeve. The elastic part is a cylindrical spiral spring, and can also be an elastic structure such as a disc spring or a wave spring, and the like, which is not described in detail, so that the directional operation of the elastic part is facilitated through the structure, and the operation precision and reliability of the elastic part are improved.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A damping piston assembly, characterized by: the damping device comprises a piston body, a sliding sleeve and an elastic part, wherein a damping channel used for being communicated with an upper cavity and a lower cavity of an outer barrel is arranged on the piston body, a plurality of groups of lower liquid passing holes which are arranged along the axial direction and used for being communicated with the lower cavity of the outer barrel are formed in the bottom of the damping channel, the sliding sleeve can be sleeved on the piston body in a sliding mode up and down, the elastic part provides elastic force for limiting the sliding sleeve to slide upwards, and when the piston assembly moves downwards in the outer barrel, the sliding sleeve is driven by damping liquid in the lower cavity of the outer barrel to move upwards relative to the piston body and further.
2. The shock absorbing piston assembly as set forth in claim 1, wherein: the piston body includes the piston cover of lower extreme open-ended, installs the damping rod in the piston cover, and the damping rod passes piston cover upper end and is used for connecting on the traveller, and the sliding sleeve overcoat is on the damping rod and with damping rod sliding seal cooperation, and the damping passageway is seted up on the damping rod.
3. The shock absorbing piston assembly as set forth in claim 2 wherein: the lower end of the damping rod is provided with a limiting flange which protrudes outwards in the radial direction.
4. The shock absorbing piston assembly as set forth in claim 2 wherein: a damping gap is formed between the outer circle of the sliding sleeve and the inner circle of the piston cover.
5. The shock absorbing piston assembly as set forth in claim 4 wherein: the excircle of the piston cover is of a stepped structure with a small upper part and a big lower part, and the excircle of the large circular section of the piston cover is used for being in sealing sliding fit with the inner circle of the outer barrel.
6. The shock absorbing piston assembly as set forth in claim 4 wherein: the inner circle of the piston outer cover is of a stepped structure with a small upper part and a large lower part, and the sliding sleeve is positioned in the large-diameter section of the inner cavity of the piston cover.
7. The shock absorbing piston assembly as set forth in claim 6 wherein: the outer circle of the sliding sleeve is of a stepped structure with a small top and a large bottom, the outer diameter of the large-diameter section of the sliding sleeve is smaller than the inner diameter of the large-diameter section of the piston housing and larger than the inner diameter of the small-diameter section of the piston housing, the outer diameter of the small-diameter section of the sliding sleeve is smaller than the inner diameter of the small-diameter section of the piston housing, and a damping gap is formed between the outer circle of the large-diameter section of the sliding sleeve and the inner circle of the large.
8. The shock absorbing piston assembly as set forth in claim 6 wherein: the bottom of the sliding sleeve is provided with a conical guide inclined plane inclined towards the excircle of the sliding sleeve.
9. The shock absorbing piston assembly as set forth in claim 7 wherein: the upper end of the sliding sleeve is provided with an annular groove which is sunken downwards and attached to and surrounds the damping rod.
10. The shock absorbing piston assembly as set forth in claim 3, wherein: the elastic piece is positioned in the piston cover and sleeved on the damping rod, and the upper end and the lower end of the elastic piece are connected to the top of the piston cover and the top of the sliding sleeve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224534.8A CN111288109B (en) | 2020-03-25 | 2020-03-25 | Damping piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224534.8A CN111288109B (en) | 2020-03-25 | 2020-03-25 | Damping piston assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111288109A true CN111288109A (en) | 2020-06-16 |
| CN111288109B CN111288109B (en) | 2021-11-09 |
Family
ID=71021959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010224534.8A Active CN111288109B (en) | 2020-03-25 | 2020-03-25 | Damping piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111288109B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT266644B (en) * | 1964-12-16 | 1968-11-25 | Schweiz Wagons Aufzuegefab | Hydraulic speed limiter |
| EP0066154A1 (en) * | 1981-06-02 | 1982-12-08 | Boge GmbH | Hydraulic shock absorber with temperature-regulated valve unit |
| FR2625539A1 (en) * | 1987-12-31 | 1989-07-07 | Pons Lechart Raphael | Oscillation damper, without valves, whose adjustment varies as a function of the load and of the amplitude of these oscillations |
| US6352145B1 (en) * | 1998-10-07 | 2002-03-05 | Tenneco Automotive Inc. | Stroke dependent damping |
| CN1867786A (en) * | 2003-09-15 | 2006-11-22 | 坦尼科汽车操作有限公司 | Stroke dependent damping |
| ES2267338A1 (en) * | 2004-02-17 | 2007-03-01 | Miguel Angel Rioja Calvo | Shock absorber for furniture doors or drawers comprises piston and cylinder unit, piston having coaxial extension on working chamber side with flattened sections on opposite sides and sliding within sleeve inside cylinder |
| CN101048607A (en) * | 2004-10-27 | 2007-10-03 | 田纳科汽车营运公司 | Stroke dependent damping |
| DE102008009543B3 (en) * | 2008-02-16 | 2009-07-02 | Zf Friedrichshafen Ag | Vibration damper, has slider opening forming valve with piston axially moved between front surface and limiting surface, where slider opening is provided in sliding sleeve axially moved to piston rod, and piston shifted relative to sleeve |
| CN102575738A (en) * | 2009-10-09 | 2012-07-11 | 株式会社东芝 | Shock absorber of operation mechanism for opening and closing device and method for lubricating same |
| CN103225665A (en) * | 2013-05-13 | 2013-07-31 | 南阳淅减汽车减振器有限公司 | Recovery damping valve for shock absorber |
| CN103591206A (en) * | 2012-08-14 | 2014-02-19 | 株式会社万都 | Valve assembly of shock absorber |
| CN104265822A (en) * | 2014-09-11 | 2015-01-07 | 重庆小康工业集团股份有限公司 | Damp-adjustable vibration damper for automobile |
| CN105556163A (en) * | 2013-09-20 | 2016-05-04 | Ｋｙｂ株式会社 | Damping device |
| CN106763454A (en) * | 2017-03-06 | 2017-05-31 | 太仓德力高机电科技有限公司 | A kind of adjustable industrial buffer |
-
2020
- 2020-03-25 CN CN202010224534.8A patent/CN111288109B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT266644B (en) * | 1964-12-16 | 1968-11-25 | Schweiz Wagons Aufzuegefab | Hydraulic speed limiter |
| EP0066154A1 (en) * | 1981-06-02 | 1982-12-08 | Boge GmbH | Hydraulic shock absorber with temperature-regulated valve unit |
| FR2625539A1 (en) * | 1987-12-31 | 1989-07-07 | Pons Lechart Raphael | Oscillation damper, without valves, whose adjustment varies as a function of the load and of the amplitude of these oscillations |
| US6352145B1 (en) * | 1998-10-07 | 2002-03-05 | Tenneco Automotive Inc. | Stroke dependent damping |
| CN1867786A (en) * | 2003-09-15 | 2006-11-22 | 坦尼科汽车操作有限公司 | Stroke dependent damping |
| ES2267338A1 (en) * | 2004-02-17 | 2007-03-01 | Miguel Angel Rioja Calvo | Shock absorber for furniture doors or drawers comprises piston and cylinder unit, piston having coaxial extension on working chamber side with flattened sections on opposite sides and sliding within sleeve inside cylinder |
| CN101048607A (en) * | 2004-10-27 | 2007-10-03 | 田纳科汽车营运公司 | Stroke dependent damping |
| DE102008009543B3 (en) * | 2008-02-16 | 2009-07-02 | Zf Friedrichshafen Ag | Vibration damper, has slider opening forming valve with piston axially moved between front surface and limiting surface, where slider opening is provided in sliding sleeve axially moved to piston rod, and piston shifted relative to sleeve |
| CN102575738A (en) * | 2009-10-09 | 2012-07-11 | 株式会社东芝 | Shock absorber of operation mechanism for opening and closing device and method for lubricating same |
| CN103591206A (en) * | 2012-08-14 | 2014-02-19 | 株式会社万都 | Valve assembly of shock absorber |
| CN103225665A (en) * | 2013-05-13 | 2013-07-31 | 南阳淅减汽车减振器有限公司 | Recovery damping valve for shock absorber |
| CN105556163A (en) * | 2013-09-20 | 2016-05-04 | Ｋｙｂ株式会社 | Damping device |
| CN104265822A (en) * | 2014-09-11 | 2015-01-07 | 重庆小康工业集团股份有限公司 | Damp-adjustable vibration damper for automobile |
| CN106763454A (en) * | 2017-03-06 | 2017-05-31 | 太仓德力高机电科技有限公司 | A kind of adjustable industrial buffer |
Non-Patent Citations (1)
| Title |
|---|
| 宋光伟等: "行程相关变阻尼油压减振器的理论模型研究", 《现代制造工程》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111288109B (en) | 2021-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104696420B (en) | frequency-sensitive shock absorber | |
| EP2233775B1 (en) | Hydraulic suspension damper | |
| US8132654B2 (en) | Hydraulic damper with compensation chamber | |
| US10030735B2 (en) | Pressure damping device | |
| US9388877B2 (en) | Pressure shock absorbing apparatus | |
| EP1925845B1 (en) | A hydraulic suspension damper | |
| US9546707B2 (en) | Hydraulic suspension damper with a position dependent damping assembly | |
| US10029530B2 (en) | Pressure damper and damping force generation mechanism | |
| CN109404472B (en) | Shock absorber assembly | |
| US4819773A (en) | Valve structure for hydraulic damper | |
| EP2828546A1 (en) | Hydraulic damper with adjustable rebound valve assembly | |
| CN101555924A (en) | Valve apparatus of shock absorber | |
| CN111322343B (en) | Automobile shock absorber | |
| CN111288109B (en) | Damping piston assembly | |
| CN108916290B (en) | Hydraulic buffering structure of shock absorber | |
| CN112268091B (en) | Automobile shock-absorbing device | |
| US7240776B2 (en) | Bottom valve apparatus of hydraulic shock absorber | |
| US20210164534A1 (en) | Hydraulic damper and a piston for the hydraulic damper assembly | |
| CN115681383A (en) | Fluid damper comprising a switching piston, method for manufacturing a fluid damper, drive device comprising a fluid damper | |
| CN209115591U (en) | A kind of adjustable new-energy automobile damper of shock-stiffness | |
| JP2008240745A (en) | Hydraulic shock absorber | |
| US20230117340A1 (en) | Hydraulic damper with a hydraulic compression stop assembly | |
| EP4170197A1 (en) | Hydraulic damper with a hydraulic compression stop assembly | |
| KR20070049795A (en) | Valve apparatus of shock absorber | |
| KR20110000769A (en) | Piston valve assembly of shock absorber |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |