EP3440375A1 - Amortisseur hydraulique equipe d'une butee d'attaque présentant une loi de freinage réglable - Google Patents
Amortisseur hydraulique equipe d'une butee d'attaque présentant une loi de freinage réglableInfo
- Publication number
- EP3440375A1 EP3440375A1 EP17713740.3A EP17713740A EP3440375A1 EP 3440375 A1 EP3440375 A1 EP 3440375A1 EP 17713740 A EP17713740 A EP 17713740A EP 3440375 A1 EP3440375 A1 EP 3440375A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plug
- damper
- hydraulic
- chamber
- 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.)
- Withdrawn
Links
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
- F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
- F16F9/49—Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
- B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
- B60G13/08—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
-
- 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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid 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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
-
- 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
- F16F9/346—Throttling passages in the form of slots arranged in cylinder walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
- B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
- B60G15/061—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper with a coil spring being mounted inside the damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/20—Type of damper
- B60G2202/24—Fluid damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/10—Damping action or damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/16—Running
- B60G2800/162—Reducing road induced vibrations
-
- 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
-
- 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
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/066—Variable stiffness
Definitions
- the present invention relates to a hydraulic damper comprising a drive abutment, and a motor vehicle equipped with this type of damper.
- Motor vehicles generally comprise for each wheel a suspension comprising a suspension spring, a damper that slows the movement of the suspension, and a stop on which the body comes to support when the suspension reaches the end of the race, in order to stop this movement by avoiding a shock.
- a known type of hydraulic stop which can be integrated into a damper comprises the end of the rod of a jack comprising a piston which descends before the end of stroke of the jack in a inner tube fitted into an outer tube. The whole is contained in a body filled with a fluid.
- the outer tube has a control disposed outside the body, allowing its rotation about its main axis.
- the inner and outer tubes have a series of holes distributed axially, which according to the angular position of the outer tube can be fully aligned with each other to allow maximum fluid passage, or progressively misaligned to obtain a reduction of this passage.
- a hydraulic limit stop is obtained with a braking force that is increasingly high as a function of the progress of the piston closing an increasing number of axially distributed holes.
- the adjustment of the angular position of the outer tube gives different braking laws, which may be suitable in particular in the case of a motor vehicle damper to adapt these laws depending on the load of the vehicle.
- hydraulic dampers have a different structure, comprising a piston of a main damper connected to a rod sliding in an outer body, including limited passages of the fluid to slow the movement of this main damper.
- a hydraulic drive abutment comprises on the front side in the compression direction of the damper, a jacket extending the piston having a series of axially distributed holes, which comes before the end of travel fit around a fixed chamber .
- the annular volume between the body and the chamber is then reduced by the axial advance of the liner, which forces the fluid contained in this annular volume towards the inner volume of the liner through its axially distributed holes which slow down more and more the piston by their progressive closures.
- the fluid then passes to the rear side of the piston through the limited passages of this piston.
- the present invention is intended to avoid these disadvantages of the prior art.
- a hydraulic damper equipped with a thrust bearing comprising a piston sliding in a body to achieve the damping, the piston moving a sleeve arranged forward with holes distributed axially, this shirt coming into end of stroke of the damper fit around a fixed chamber which gradually closes these holes by reducing the fluid passage section towards the inside of the jacket, this damper being remarkable in that the chamber has additional bores , and in that this chamber receives inside a movable bushel which in its closed position or opens additional holes.
- the damper according to the invention may further comprise one or more of the following features, which may be combined with one another.
- the plug has a translational movement along the main axis of the damper, or rotation about this axis.
- the chamber has more than two additional holes, gradually discovered by the movement of the bushel. In this way it is possible to obtain different braking laws of the attack stop.
- the plug comprises an external control operable outside the body of the damper.
- the external control may include a motor.
- the plug has an internal control in the body of the damper, unrelated to the outside of this damper.
- the internal control may comprise a connection displaced by the movements of the piston of the damper, applying a force on the plug.
- the internal control comprises a device for timing or filtering the frequency of the movement of the bushel.
- the device for timing or filtering the movement of the plug comprises a servo hydraulic damper comprising the plug forming a servo piston moving in the chamber, and a calibrated nozzle forming a passage to this chamber.
- the device for delaying or filtering the movement of the plug comprises an inertia linked to this plug comprising a mass of inertia or a column of liquid.
- the device for timing or filtering the movement of the plug comprises a calibrated hydraulic valve which opens for a load threshold applied to it.
- the invention also relates to a motor vehicle comprising suspensions equipped with hydraulic dampers having driving abutments, comprising any one of the preceding features.
- FIGS. 1a and 1b are views in axial section of a hydraulic drive abutment according to the prior art, presented respectively before the work of this stop and during its work;
- FIG. 2 is a graph showing the force applied by this attack stop as a function of its stroke for different speeds
- FIG. 3 is an axial sectional view of a driving abutment according to the prior art, according to a variant
- FIGS. 4a and 4b are diagrams in axial section of a drive abutment according to the invention comprising two additional bores, respectively presented in a low braking position and strong braking;
- FIG. 5 is a diagram showing a side view, alternatively a series of additional bores of the chamber of this stop;
- FIGS. 6a and 6b are diagrams showing in cross section two positions of the movable plug for this variant
- FIG. 7 shows the sections of passage of the fluid as a function of the stroke of the piston for the end stop comprising two additional bores
- FIGS. 9, 10 and 11 are graphs established by simulations, presenting for this latter thrust the displacement of the plug for a quasi-static load variation, the displacement of the piston of the main damper in dynamics. during a taxi of the vehicle, and the displacement of the bushel obtained during this rolling.
- FIG. 1a shows a damper comprising a cylindrical outer body 2 containing a piston 4 fixed to the end of a shock absorber rod 20, sliding in this body with a seal to define a front volume 6 and a rear volume 22.
- the piston 4 has reduced passages of the fluid 8 between the two volumes before 6 and rear 22 which slow down its movement as a function of the fluid flow rate, and therefore the speed of this piston.
- the piston 4 is extended on the front side indicated by the arrow "AV", by a circular liner 10 designed to fit snugly in an annular volume 16 around a cylindrical chamber 12 of a hydraulic abutment, before the end of the stroke of this piston.
- the hydraulic chamber 12 forming a hollow tube, has its front end fixed to an end cap 14 closing the body 2 of the front side.
- the liner 10 has an annular boss 24 guiding it in the outer body 2, and a series of axially aligned radial bores 18 which have a smaller and smaller diameter going from front to rear.
- the bores 18 are gradually closed as a function of the advance of the piston 4, which reduces more and more the total cross section of the fluid passage. front volume 6 towards the inside of this shirt. The fluid then passes from the inside of the jacket 10 to the rear volume 22 through the reduced passages 8 of the piston 4.
- FIG. 2 shows the braking force of the attacking stop expressed in daN on the vertical axis, as a function of its stroke expressed in millimeters, for different speeds of displacement of the piston 4. For each speed we have a start of the race from the attack abutment to -20mm, then a braking force of this stop more and more important which comes from the progressive closure of the holes 18.
- FIG. 3 shows a jacket 10 detached from the piston, which is when this piston is moved to a rest position where it is just engaged at the beginning of the chamber 12, by a helical positioning spring 34 arranged in the front volume 6 and fixed to the end cover 14. In this way the damper can carry out normal runs without moving the liner 10 which remains in its rest position.
- the piston 4 coming near its limit switch presses on the sleeve 10 by compressing the positioning spring 34, which reduces the front volume 6 by ensuring braking of this piston.
- FIG. 4a shows a variant of the attack abutment shown in FIG. 1a, comprising additional radial bores 40a, 40b formed on the chamber 12 at different axial distances, and a plug 42 fitted in this chamber, which may according to its butcher height some additional holes.
- the internal volume 48 of the chamber 12 is placed in permanent communication with the front volume 6 of the damper, by an axial bore 44 of the plug 42.
- the plug 42 is connected to the outside by an external control 46 which passes through the end cover 14, to be moved axially by a control that can be manual or automatic.
- a control that can be manual or automatic.
- the lower additional drilling 40b which is arranged most towards the 'before.
- the main damper carries a large stroke with the lower additional drilling 40b remaining open, which gives a low braking of this damper.
- an external control 46 easy to implement through the fixed chamber 12 which allows to apply only a small movement to the plug 42, control the braking force of the attack stop.
- the external control 46 may comprise externally control by axial sliding, or by a screw-nut system which allows to apply a rotation on a rod coming out of the damper.
- These movements can be applied manually, in particular according to the mass of the vehicle to harden the attack stop when the vehicle is more loaded, or by a motor that can be actuated by a manual control, or automatic by reacting for example in function of information given by sensors indicating the load or depression of the suspension.
- FIG. 5 shows a variant of the chamber 12 comprising a series of additional bores 40 arranged diagonally, with simultaneously an axial offset and a radial offset.
- FIG. 6a shows a rotary plug 42 around the main axis of the damper, comprising two opposite recesses 56 which extend each on 90 °.
- the external control 46 of this rotary valve 42 has an axial stem extending from the end cap 14, which is rotated.
- FIG. 7 shows for a thrust bearing comprising two additional holes 40 shown in FIG. 4a, the total passage section S of the front chamber 6 towards the inside of the liner 10 as a function of the stroke C of the attack abutment , which represents by reducing the braking level of this stop.
- the curve 50 has the passage section of the single holes 18 of the liner 10, comprising at the beginning of the compression stroke of the driving abutment the maximum section S1 which is relatively small. Then, the steps 18 of the liner 10 are progressively closed in stages to reach, with the stroke C4, the closure of all these bores.
- the curve 52 has the total passage section comprising the bores 18 of the liner 10, and the additional lower boring 40b which remains fully open until the stroke C3 disposed a little before the end of stroke of the driving abutment, and which closes progressively up to curve C4. From an initial value S2, a section is obtained which up to the stroke C3 is increased by a constant additional value with respect to the single bores 18 of the liner 10 represented by the curve 50.
- Curve 52 represents a brake law of the driving abutment for a vehicle unladen, comprising a mean braking over the entire stroke.
- the curve 54 has the total passage section comprising the holes 18 of the liner 10, and the larger additional drilling 40a of large diameter which remains fully open until the stroke C1 disposed a little after the start of the stroke of the stop. 'attack.
- a very important section S3 is obtained as long as the upper additional piercing 40a remains open, until the stroke C1, then a progressive closure of this piercing until the stroke C2.
- the curve 54 joins at this point the curve 50 of the single holes 18 of the jacket 10.
- the curve 54 has a brake law of the attacking stop for a loaded vehicle including at the beginning of the race a reduced braking while the more recessed suspension works more commonly in this start of the race, and towards the end of the race a braking very important to avoid a shock at the end of the race.
- FIG. 8a shows a strike abutment similar to that shown in FIG. 4a, comprising a plug 42 forming a servo piston closing the internal volume 48 of the chamber 12, disposed along its axis with a calibrated timing nozzle 60 forming a strong limitation flow, establishing a limited connection between this interior volume and the front volume 6 of the damper.
- the plug 42 closing the inner volume 48 of the chamber 12 constitutes a servo damper.
- a servo coil spring 62 arranged for the most part in the liner 10, is fixed on one side to the bottom of this liner and the other to the plug 42.
- the servo spring 62 transmits to the plug 42 information on the average position of the piston 4 of the main damper, to obtain the displacement of this plug with a delay effect due to the very low flow through the timing nozzle 60 of the servo damper.
- Figure 9 shows on the vertical axis axial displacements expressed in meters, as a function of time expressed in seconds.
- the curve 70 has a sudden displacement of the main damper along a stroke of 15mm, produced for example with the arrival of a load in the vehicle that drives the suspensions.
- the curve 72 shows the displacement of the plug 42 in response, by the effect of the servo spring 62 transmitting a force to this plug, and the servo damper.
- the total stroke of plug 42 of 10mm ends after a duration of 8s.
- the internal control of the plug 42 by the servo spring 62 is passive, using no energy or control external to the damper.
- FIG. 10 shows, as a function of time expressed in seconds, a curve 74 showing a movement of the main damper comprising an oscillation having a total amplitude of approximately 200 mm and a period of one second.
- FIG. 11 shows, as a function of the time expressed in seconds, a curve 76 showing for the superposition of the sudden displacement of the average position of the main damper shown in FIG. 9 with the oscillation shown in FIG. 10, the resulting displacement of the plug 42.
- a servo spring 62 fixed on both sides to work both in tension and in compression, or on one side or on no side to work only in compression. In these latter cases the servo spring 62 can work only on a final part of the course of the main damper.
- a complementary compression control spring in the internal volume 48 of the chamber 12, in particular to apply an axial force upwards on the plug 42, which is added to that of a servo spring main 62 working in compression and applying on this bushel a force down.
- a mass of inertia can be placed on the plug 42 in order to make its displacement less sensitive to the oscillations at a higher frequency of the piston 4 of the main damper, in order to produce a system for retarding its movement. It is also possible to bind a column of liquid to the movement of the plug 42, the mass of the liquid forming an inert liquid.
- a device for delaying or filtering the movement of the plug 42 may comprise a calibrated hydraulic valve which opens for a load threshold applied to it, given for example by the pressure of the servo spring 62.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1653132A FR3050000B1 (fr) | 2016-04-08 | 2016-04-08 | Amortisseur hydraulique equipe d’une butee d’attaque presentant une loi de freinage reglable |
PCT/FR2017/050520 WO2017174887A1 (fr) | 2016-04-08 | 2017-03-09 | Amortisseur hydraulique equipe d'une butee d'attaque présentant une loi de freinage réglable |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3440375A1 true EP3440375A1 (fr) | 2019-02-13 |
Family
ID=56373006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17713740.3A Withdrawn EP3440375A1 (fr) | 2016-04-08 | 2017-03-09 | Amortisseur hydraulique equipe d'une butee d'attaque présentant une loi de freinage réglable |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190154103A1 (fr) |
EP (1) | EP3440375A1 (fr) |
CN (1) | CN108884895A (fr) |
BR (1) | BR112018069386A2 (fr) |
FR (1) | FR3050000B1 (fr) |
WO (1) | WO2017174887A1 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3074244B1 (fr) | 2017-11-29 | 2019-10-18 | Psa Automobiles Sa | Amortisseur hydraulique avec butee de fin de course autoreglable suivant la charge |
FR3086359B1 (fr) | 2018-09-26 | 2020-09-11 | Psa Automobiles Sa | Amortisseur hydraulique avec butee hydraulique de fin de course a positionnement auto-ajustable |
FR3086986B1 (fr) | 2018-10-04 | 2020-10-09 | Psa Automobiles Sa | Amortisseur hydraulique avec butee hydraulique de fin de course a hauteur auto-ajustable |
IT201800010763A1 (it) * | 2018-12-03 | 2020-06-03 | Sistemi Sospensioni Spa | Ammortizzatore idraulico, particolarmente per sospensione di veicolo, con tampone idraulico operante durante la corsa di compressione dell'ammortizzatore e con dispositivo di regolazione per regolare il comportamento del tampone idraulico in funzione del carico del veicolo. |
FR3092376B1 (fr) * | 2019-01-31 | 2021-05-21 | Psa Automobiles Sa | Butee hydraulique de suspension de vehicule automobile a masse inertielle |
FR3093155B1 (fr) | 2019-02-21 | 2021-02-19 | Psa Automobiles Sa | Amortisseur hydraulique equipe d’une butee de fin de course auto-adaptable |
FR3094058B1 (fr) | 2019-03-22 | 2021-03-12 | Psa Automobiles Sa | Amortisseur avec butee de fin de course auto-adaptable equipee de perçages dans la tige |
FR3094057B1 (fr) | 2019-03-22 | 2021-03-12 | Psa Automobiles Sa | Amortisseur avec butee de fin de course auto-adaptable equipee d’une chambre en avant d’un boisseau |
FR3094433B1 (fr) | 2019-03-27 | 2021-03-12 | Psa Automobiles Sa | Amortisseur avec butee de fin de course auto-adaptable equipee d’un boisseau flottant |
FR3094434B1 (fr) * | 2019-03-28 | 2021-11-19 | Psa Automobiles Sa | Amortisseur avec butee de fin de course equipee d’un clapet de limitation de pression |
ES2832888B2 (es) * | 2019-12-11 | 2022-04-07 | Kyb Europe Gmbh Sucursal En Navarra | Dispositivo de control hidraulico de carga variable |
CN111765194B (zh) * | 2020-06-24 | 2021-12-07 | 北京京西重工有限公司 | 液压阻尼器组件 |
CN112879479B (zh) * | 2021-02-23 | 2022-03-22 | 上海交通大学 | 一种用于冲击试验装置的流体阻尼器 |
CN113201978B (zh) * | 2021-05-08 | 2022-07-19 | 中电建路桥集团有限公司 | 一种适用于隧道的减震防沉降地铁轨道 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191500023A (en) * | 1915-01-01 | 1915-09-09 | Thomas George Clark | Improvements in Portable Devices for Cleaning Carpets and the like. |
JPS5612428Y2 (fr) * | 1977-12-13 | 1981-03-23 | ||
SU1190112A1 (ru) * | 1983-11-21 | 1985-11-07 | Днепропетровский Ордена Трудового Красного Знамени Институт Инженеров Железнодорожного Транспорта Им.М.И.Калинина | Гидропневматический амортизатор |
DE4311626A1 (de) * | 1993-04-08 | 1994-10-13 | Stabilus Gmbh | Dämpfungskraftveränderbarer Schwingungsdämpfer |
GB2310023B (en) * | 1996-02-09 | 2000-02-02 | Acg Deutschland Gmbh | Hydraulic damper |
US5720368A (en) * | 1997-03-03 | 1998-02-24 | Caterpillar Inc. | Snubber for a hydraulic cylinder |
JP4195141B2 (ja) * | 1999-02-08 | 2008-12-10 | 不二ラテックス株式会社 | ショックアブソーバ |
AT414033B (de) * | 2001-01-09 | 2006-08-15 | Blum Gmbh Julius | Dämpfer, insbesondere für möbel |
US6648109B2 (en) * | 2001-09-13 | 2003-11-18 | Meritor Heavy Vehicle Technology, Llc | Adjustable shock absorber |
DE10213726B4 (de) * | 2002-03-26 | 2005-11-03 | Weforma Dämpfungstechnik GmbH | Stoßdämpfer |
FR2902850B1 (fr) | 2006-06-21 | 2012-04-27 | Soben | Dispositif a butee hydraulique, notamment pour amortisseur reglable |
FR2917371B1 (fr) * | 2007-06-15 | 2009-11-20 | Messier Dowty Sa | Amortisseur pour atterisseur d'aeronef |
NO327011B1 (no) * | 2007-07-18 | 2009-04-06 | Eab Engineering As | Stotdemper |
CN201779206U (zh) * | 2010-07-13 | 2011-03-30 | 沈阳长城液压机械制造有限公司 | 电磁变力减振器 |
FR2973853A1 (fr) * | 2011-04-11 | 2012-10-12 | Peugeot Citroen Automobiles Sa | Amortisseur hydraulique en particulier pour vehicule automobile |
US8950499B2 (en) * | 2011-07-26 | 2015-02-10 | Chevron U.S.A. Inc. | Pipe-in-pipe apparatus, and methods and systems |
CN203906638U (zh) * | 2014-05-14 | 2014-10-29 | 北京京西重工有限公司 | 具有液压止挡结构的液压阻尼器 |
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2016
- 2016-04-08 FR FR1653132A patent/FR3050000B1/fr not_active Expired - Fee Related
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2017
- 2017-03-09 EP EP17713740.3A patent/EP3440375A1/fr not_active Withdrawn
- 2017-03-09 US US16/091,166 patent/US20190154103A1/en not_active Abandoned
- 2017-03-09 BR BR112018069386A patent/BR112018069386A2/pt not_active IP Right Cessation
- 2017-03-09 CN CN201780021729.9A patent/CN108884895A/zh active Pending
- 2017-03-09 WO PCT/FR2017/050520 patent/WO2017174887A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
FR3050000B1 (fr) | 2018-09-07 |
BR112018069386A2 (pt) | 2019-01-22 |
US20190154103A1 (en) | 2019-05-23 |
FR3050000A1 (fr) | 2017-10-13 |
CN108884895A (zh) | 2018-11-23 |
WO2017174887A1 (fr) | 2017-10-12 |
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