FR2633681A1 - Hydraulic spring device - Google Patents

Hydraulic spring device Download PDF

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Publication number
FR2633681A1
FR2633681A1 FR8808724A FR8808724A FR2633681A1 FR 2633681 A1 FR2633681 A1 FR 2633681A1 FR 8808724 A FR8808724 A FR 8808724A FR 8808724 A FR8808724 A FR 8808724A FR 2633681 A1 FR2633681 A1 FR 2633681A1
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FR
France
Prior art keywords
piston
cylinder
elements
volume
liquid
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
Application number
FR8808724A
Other languages
French (fr)
Other versions
FR2633681B1 (en
Inventor
Stanislaw Pietrzyk
Jan Galinski
Jean-Michel Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COMMERCE SARL CIE
Original Assignee
COMMERCE SARL CIE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by COMMERCE SARL CIE filed Critical COMMERCE SARL CIE
Priority to FR8808724A priority Critical patent/FR2633681B1/en
Publication of FR2633681A1 publication Critical patent/FR2633681A1/en
Application granted granted Critical
Publication of FR2633681B1 publication Critical patent/FR2633681B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F16F9/003—Dampers characterised by having pressure absorbing means other than gas, e.g. sponge rubber
    • 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
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/027—Mechanical springs regulated by fluid means
    • B60G17/0272—Mechanical springs regulated by fluid means the mechanical spring being a coil spring
    • 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
    • F16F9/516—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 resulting in the damping effects during contraction being different from the damping effects during extension, i.e. responsive to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention relates to a hydraulic spring device which can be applied to all vehicles and is intended for the suspension of the wheels, the engines and the industrial mechanical equipment as well as for the bumpers. This device replaces the conventional spring and damper. The device includes a cylinder with a bottom 3 and a piston 4. The piston 4 traps inside the cylinder 3 the liquid L in which there are entirely submerged elements with three-dimensional elasticity 5. Under the action of the mechanical force P the piston 4 increases the hydraulic pressure in the cylinder 3. The thrust forces, under the action of the piston, give rise to the three-dimensional size reduction of the elements 5 with three-dimensional elasticity. With the decrease of the mechanical force P, the volume of the elements 5 increases. One variant of the device equipped with a restrictor valve replaces the conventional spring and damper. Another variant of the device is equipped with a high-pressure pump 17. This pump changes the properties of the response threshold of this device.

Description

La présente invention concerne un dlsposltlf ressort hydraulique, applicable dans les véhicules et équipements mécaniques industriels. Les forces mécaniques dans les véhicules et équipements doivent-etre équilibrées par les forces élastiques. Le dispositif , faisant objet de la pré- sente invention, a pour but la création de ces forces éla- stiques. I1 est destin particulibrement b la suspension des roues et des moteurs ainsi qu'aux tampons de choc et aux équipements industriels. Le dispositif équipé d'une vanne d'étranglement remplace en meme temps le ressort et l'amortisseur traditionels. The present invention relates to a hydraulic spring dlsposltlf, applicable in industrial vehicles and mechanical equipment. The mechanical forces in vehicles and equipment must be balanced by the elastic forces. The object of the present invention is to create these elastic forces. It is intended especially for the suspension of wheels and motors as well as shock buffers and industrial equipment. The device fitted with a throttle valve replaces the traditional spring and damper at the same time.

Jusqu'à présent il n'existe pas en principe d'équipe- ment hydraulique se caractérisant par la propriété d'élas licité et d'ammortissement. Par contre on connait des $équi- pements pneumatiques élastiques dans lequels le gaz fermé dans le cy-lindre est soumis à la pression du piston. Up to now there has not in principle been any hydraulic equipment characterized by the property of lawful elas and damping. On the other hand, elastic pneumatic equipment is known in which the closed gas in the cylinder is subjected to the pressure of the piston.

Il existe d'autre part un dispositif dans lequel le cylindre est remrtl par un plastique spéciai.Dans ce type d'équipement de plastique est fermé dans le cylindre en l'état solide. L'action du piston provoque la conversion de de plastique de l'état solide en l'état fluide. Toutefois, ce dispositif ne possédé pas de propriété d'élasticité.There is also a device in which the cylinder is replaced by a special plastic. In this type of plastic equipment is closed in the cylinder in the solid state. The action of the piston causes the conversion of plastic from the solid state to the fluid state. However, this device has no elasticity property.

Le dispositif selon l'invention possède des propriétés de ressort et d'amortisseur. Il comporte en effet un cylindre avec un fond. Dans ce cylindre est fermé, par un piston, un liquide avec des éléments d'elasticité volumique. The device according to the invention has spring and damper properties. It indeed has a cylinder with a bottom. In this cylinder is closed, by a piston, a liquid with elements of volume elasticity.

Ces éléments d'élasticité volumique sont immergés entiEre- ment dans le liquide. Comme éléments d'élasticité volumique peut etre utilisé notamment le caoutchouc le plastique et etc.These elements of volume elasticity are completely immersed in the liquid. As elements of volume elasticity can be used in particular rubber, plastic and etc.

Sous l'action de la force mécanique (du véhicule, de l'équipement, ...etc) le piston augmente la pression hydraulique Oans le cylindre. Les forces de poussée sous l'action du piston provoquent la diminution volumique des éléments d'élasticité volumique. Ru moment de diminution de le force mécanique ,les éléments d'élasticité volumique augementent son volume et le piston revent au point de son départ.  Under the action of mechanical force (of the vehicle, equipment, etc.) the piston increases the hydraulic pressure in the cylinder. The thrust forces under the action of the piston cause the volume reduction of the elements of volume elasticity. When the mechanical force decreases, the volume elasticity elements increase its volume and the piston resells at the point of departure.

Une variante de dispositif est équipée d'une vanne d'étranglement situee dans le cylindre entre IF piston et les éléments d'élasticité volumique. Cette variante de dis positif remplace le ressort et l'amortisseur. A variant of the device is equipped with a throttling valve located in the cylinder between IF piston and the elements of volume elasticity. This variant of positive device replaces the spring and the shock absorber.

Une autre variante ae dispositif est équipée d'un orifice faisant liaison entre le cylindre et la pompe de haute pression. Chaque modification de la pression dans le cylindre provoquée par la pompe a haute pression change les propriétés du seuil de réponse de ce dispositif. Another variant of the device is equipped with an orifice connecting the cylinder and the high pressure pump. Each change in the pressure in the cylinder caused by the high pressure pump changes the properties of the response threshold of this device.

Les dessins annexés illustrent l'invention.The accompanying drawings illustrate the invention.

La figure 1 représente en coupe axiale le dispo
sitif selon l'invention.Figure 1 shows in axial section the availability
sitive according to the invention.

La figure 2 représente en coupe axiale une varian
t; de dispositif équipée d'une vanne d'étranglement
La figure 3 représente en coupe axiale une varian
te de dispositif équipée o'un orifice et dune pomp
à haute pression
Les figures 4, 5, 6 représentent les courbes de dépendance e 1 force mécanique et de la translation du piston
Le figure 4 correspond au dispositif de la figure I
a figure 3 cnrrespono au dispositif de la figure 2
La figure 6 correspond au dispositif de la figure 3
Le dispositif représenté sur la figure 1 comporte un corpe (1) dans lequel se trouve un cylindre avec un 4ond(3)
Le cylindre est rempli par un liquide (L) et par des élé- ments d'élasticité volumique (Sj immergés entièrement dans ce liquide.Le liquide (L) est enfermé dans le cylindre (3) ensemble avec les éléments d'élasticité volumique (5) par un piston (4).Figure 2 shows in axial section a varian
t; device fitted with a throttle valve
Figure 3 shows in axial section a varian
device fitted with an orifice and a pump
high pressure
Figures 4, 5, 6 show the dependence curves e 1 mechanical force and the translation of the piston
Figure 4 corresponds to the device of Figure I
a figure 3 cnrrespono to the device of figure 2
Figure 6 corresponds to the device of Figure 3
The device shown in Figure 1 has a body (1) in which there is a cylinder with a 4ond (3)
The cylinder is filled with a liquid (L) and with elements of volume elasticity (Sj fully immersed in this liquid. The liquid (L) is enclosed in the cylinder (3) together with the elements of volume elasticity ( 5) by a piston (4).

Le piston (4) et la tige (7) ont un assemblage rigide. The piston (4) and the rod (7) have a rigid assembly.

La tige (7) est localisée sur un palier a glissement (19).The rod (7) is located on a sliding bearing (19).

Le palier a glissement (19) est placé sur le couvercle (2). The sliding bearing (19) is placed on the cover (2).

Le couvercle (2i est joint au corps (1) par des vis (9).The cover (2i is joined to the body (1) by screws (9).

Entre le couvercle Ft le piston se trouve un limiteur de course ta, de pistone. Les éléments d'élasticité volumique(S) possédent la fixation (6). Le corps (1) est fixé au support (10) du véhicule. Between the cover Ft the piston is a stroke limiter ta, of piston. The elements of volume elasticity (S) have the fixing (6). The body (1) is fixed to the support (10) of the vehicle.

Une variante de dispositif représentée sur la figure 2 comporte une vanne d'étranglement (13) localisée dans le
cylindre (3) entre le piston (4) et les éléments d'élasiti- cité volumique (5).A variant of the device shown in FIG. 2 includes a throttle valve (13) located in the
cylinder (3) between the piston (4) and the volume elasticity elements (5).

Une autre variante représentée sur la figure 3 comporte un orifice (15) par lequel la conduite forcée (16) fait
liaison entre le cylindre (3) et la pompe 8 haute pression
(17).Another variant shown in Figure 3 includes an orifice (15) through which the penstock (16) forms
connection between cylinder (3) and high pressure pump 8
(17).

dans le dispositif représenté sur la figure 1, le pis
ton (4) sous l'action de la force (P) sur la tige (7) pous-
se sur le liquide (L). Cette action provoque l'augmentation
de la pression dans le cylindre (3) et l'augmentation des
forces de pousse (S) sur les éléments d'élasticité volu-
mique (5). Ces éléments en conséquence diminuent leur vo
lume. En ce moment le piston (4) effectue une translation
dans le cylindre (3). La direction de la translation du
piston (4) est présentée sur la figure 4. Sur la courbe
def(P), la flèche (a) montre la direction de la translation
du piston (4).Ensuite, quand les forces de la reaction (N)
des éléments (). sont plus grandes que la force (P), les
éléments (5) augmentent leur volume. in résultat de cette
situation le piston t4) est repousse du cylindre (3). Cette
translation du piston (4) est montrée sur la figure 4 por
la flèche (C).in the device shown in Figure 1, the udder
tone (4) under the action of force (P) on the rod (7) pushes
se on the liquid (L). This action causes the increase
pressure in the cylinder (3) and the increase in
pushing forces (S) on the elastic elements
mique (5). These elements consequently decrease their vo
lume. At this moment the piston (4) performs a translation
in the cylinder (3). The direction of the translation of the
piston (4) is shown in figure 4. On the curve
def (P), the arrow (a) shows the direction of translation
piston (4). Then, when the reaction forces (N)
elements (). are greater than the force (P), the
elements (5) increase their volume. in result of this
situation the piston t4) is pushed back from the cylinder (3). This
translation of the piston (4) is shown in Figure 4 por
the arrow (C).

Le fonctionnement de la variante de dispositif équipée
d'une vanne d'étranglement représentée sur la figure 2 res
semble au fonctionnement du dispositif représente sur la
figure 1.The functioning of the variant of the equipped device
a throttle valve shown in Figure 2 res
seems to operate the device represents on the
figure 1.

Toutefois la résistance de l'écoulement du liquide (L) par
la vanne (13) dépend de la direction de l'écoulement. Ainsi,
quand le piston (4) reste poussé dans le cylindre (3),
la résistance de l'écoulement du liquide (L) est minimale.However the resistance of the liquid flow (L) by
the valve (13) depends on the direction of flow. So,
when the piston (4) remains pushed into the cylinder (3),
the resistance of the liquid flow (L) is minimal.

La direction de la translation du piston (4) est représente
sur la figure 5 sur la courbe d=f(P) par la flèche (A).The direction of translation of the piston (4) is shown
in Figure 5 on the curve d = f (P) by the arrow (A).

Au contraire, quand le piston (4) est répoussé du cylindre (3), la résistance de l'écoulement du liquide eL] est très
grande. On the contrary, when the piston (4) is pushed back from the cylinder (3), the resistance of the liquid flow eL] is very
big.

Cette dépendance est montrée sur la courbe d=f(P) de a figure 5, par la flèche (C).This dependence is shown on the curve d = f (P) of Figure 5, by the arrow (C).

Une autre variante de dispositif équipée d'un orifice et d'une pompe Q haute pression, représentée sur la figure 3 fonctionne de la meme manière que le difpositif montré sur la figure I. Toutefois, il est possible de modifier, J 1~ ou orifice, la pression et le volume du liquide (L) dans le cylindre (3) en utilisant la pompe é haute pression (17). La pression dans le cylindre (3) provoque par la pompe (17) fait apparaître en conséquence la force repulsive complementaire (F) agissant sur le piston (4). Another variant of the device equipped with an orifice and a high pressure pump Q, represented in FIG. 3 operates in the same way as the device shown in FIG. I. However, it is possible to modify, J 1 ~ or orifice, pressure and volume of liquid (L) in the cylinder (3) using the high pressure pump (17). The pressure in the cylinder (3) caused by the pump (17) consequently reveals the additional repulsive force (F) acting on the piston (4).

La force repulsive complementaire (F) coopère avec la for- ce de la reaction (N) des éléments (5). La modification de la pression dar-s le cylindre provoquée par la pompe (17) change le, propriétés du seuil de réponse de ce dispositif.The additional repulsive force (F) cooperates with the strength of the reaction (N) of the elements (5). The change in the pressure in the cylinder caused by the pump (17) changes the properties of the response threshold of this device.

Cette dépendance est présentée sur la courbe d=f(P) de la figure 6 oct le point cj représente l'état d'égalité entre la force (P1) agissant sur le tige (7) et la force repulsive (F), pour la position (d1) du piston (4).This dependence is presented on the curve d = f (P) of figure 6 oct the point cj represents the state of equality between the force (P1) acting on the rod (7) and the repulsive force (F), for the position (d1) of the piston (4).

Ce dispositif selon 1 invention est particulièrement destiné e la suspension oes roues et des moteurs de tous le véhicules aux tampons de choc et aux équipements mécaniques et industriels.  This device according to 1 invention is particularly intended for the suspension of wheels and engines of all vehicles with shock buffers and mechanical and industrial equipment.

Claims (5)

REVENDICATIONS 1) Dispositif comportant un corps constitué d'un cylindre fermé d'un côté par un fond et d'autre coté par un piston mobile, caractérisé en ce que ledit piston (4) enferme e l'intérieur du cylindre (3) un liquide (L) dans lequel ect immergé entièrement au moins un élément d'élasticité volumique (5). 1) Device comprising a body consisting of a cylinder closed on one side by a bottom and on the other side by a movable piston, characterized in that said piston (4) encloses inside the cylinder (3) a liquid (L) in which ect fully immersed at least one element of volume elasticity (5). 2) Dispositif sel on la revenoication 1, caractérisé er ce que l'élément d'élasticité volumique (5) change son volume sous pression du liquide (L) crées par le piston (4) actionné par la force (P) en appui sur ledit piston (4). 2) Salt device on revenoication 1, characterized in that the volume elasticity element (5) changes its volume under liquid pressure (L) created by the piston (4) actuated by force (P) pressing on said piston (4). 3) Dispositif selon les revendications 1 et 2 caracterise en ce qu'il comporte e l'intérieur du cylindre (3) entre le piston (4) et l'élément d'élasticité volumique (5) au moins une vanne détranglement (13). 3) Device according to claims 1 and 2 characterized in that it comprises inside the cylinder (3) between the piston (4) and the element of volume elasticity (5) at least one throttling valve (13) . 4) Dispositif selon les r-evendications 1 et 2, caractérisé en ce que le corps (1) comporte un orifice (15) faisant liaison entre le cylindre (3s et une pompe a haute pression (17). 4) Device according to claims 1 and 2, characterized in that the body (1) has an orifice (15) connecting the cylinder (3s and a high pressure pump (17). 5) Dispositif selon les revendications 1, 2 et 4, caractérisé en ce que la pompe 4 haute pression (17) en provoquant les changements de la pression et du volume du liquide (L) dans le cylinore (3) modifie le seuil de réponse dudit dispositif.  5) Device according to claims 1, 2 and 4, characterized in that the high pressure pump 4 (17) by causing changes in the pressure and volume of the liquid (L) in the cylinore (3) modifies the response threshold of said device.
FR8808724A 1988-06-29 1988-06-29 HYDRAULIC SPRING DEVICE Expired - Fee Related FR2633681B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8808724A FR2633681B1 (en) 1988-06-29 1988-06-29 HYDRAULIC SPRING DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8808724A FR2633681B1 (en) 1988-06-29 1988-06-29 HYDRAULIC SPRING DEVICE

Publications (2)

Publication Number Publication Date
FR2633681A1 true FR2633681A1 (en) 1990-01-05
FR2633681B1 FR2633681B1 (en) 1994-02-18

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1094549A (en) * 1953-11-26 1955-05-20 Hydro or oleo-pneumatic device and its applications
FR1114813A (en) * 1953-12-11 1956-04-17 Method and device for softening fluid shock absorbers
DE1159782B (en) * 1952-11-12 1963-12-19 Applic Mach Motrices Hydraulic shock absorbers, especially for motor vehicles
FR1385942A (en) * 1964-03-11 1965-01-15 Greer Hydraulics Inc Hydropneumatic spring
FR1395379A (en) * 1963-05-21 1965-04-09 Unitechnic Ag Shock absorber and oscillation damper, in particular for motor vehicles
FR1411480A (en) * 1963-10-15 1965-09-17 Wildt Mellor Bromley Ltd Improvements to trade barriers
FR1438513A (en) * 1965-03-31 1966-05-13 High compression air spring
FR1483611A (en) * 1965-06-18 1967-09-06
FR2417026A1 (en) * 1978-02-09 1979-09-07 Mercier J HYDROPNEUMATIC ACCUMULATOR WITH VARIABLE VOLUME
DE3531667A1 (en) * 1984-11-15 1986-05-15 S.I.E.T.T.E. S.p.A., Florenz/Firence Shock absorber with an insert made of elastomer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159782B (en) * 1952-11-12 1963-12-19 Applic Mach Motrices Hydraulic shock absorbers, especially for motor vehicles
FR1094549A (en) * 1953-11-26 1955-05-20 Hydro or oleo-pneumatic device and its applications
FR1114813A (en) * 1953-12-11 1956-04-17 Method and device for softening fluid shock absorbers
FR1395379A (en) * 1963-05-21 1965-04-09 Unitechnic Ag Shock absorber and oscillation damper, in particular for motor vehicles
FR1411480A (en) * 1963-10-15 1965-09-17 Wildt Mellor Bromley Ltd Improvements to trade barriers
FR1385942A (en) * 1964-03-11 1965-01-15 Greer Hydraulics Inc Hydropneumatic spring
FR1438513A (en) * 1965-03-31 1966-05-13 High compression air spring
FR1483611A (en) * 1965-06-18 1967-09-06
FR2417026A1 (en) * 1978-02-09 1979-09-07 Mercier J HYDROPNEUMATIC ACCUMULATOR WITH VARIABLE VOLUME
DE3531667A1 (en) * 1984-11-15 1986-05-15 S.I.E.T.T.E. S.p.A., Florenz/Firence Shock absorber with an insert made of elastomer

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Publication number Publication date
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