DE102008046632A1 - Gas spring accumulator for changing hydraulic pressure of suspension device in motor vehicle, has powering element formed as elastomer body arranged in hydraulic area, where powering element comprises receiving space for hydraulic fluid - Google Patents
Gas spring accumulator for changing hydraulic pressure of suspension device in motor vehicle, has powering element formed as elastomer body arranged in hydraulic area, where powering element comprises receiving space for hydraulic fluid Download PDFInfo
- Publication number
- DE102008046632A1 DE102008046632A1 DE200810046632 DE102008046632A DE102008046632A1 DE 102008046632 A1 DE102008046632 A1 DE 102008046632A1 DE 200810046632 DE200810046632 DE 200810046632 DE 102008046632 A DE102008046632 A DE 102008046632A DE 102008046632 A1 DE102008046632 A1 DE 102008046632A1
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic
- gas spring
- gas
- spring accumulator
- space
- 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- Withdrawn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
-
- 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
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
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- 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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
- F16F9/096—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall comprising a hydropneumatic accumulator of the membrane type provided on the upper or the lower end of a damper or separately from or laterally on 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
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/154—Fluid spring with an accumulator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/20—Mounting of accessories, e.g. pump, compressor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/41—Elastic mounts, e.g. bushings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/422—Links for mounting suspension elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/422—Links for mounting suspension elements
- B60G2204/4222—Links for mounting suspension elements for movement on predefined locus of, e.g. the wheel center
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/73—Rubber; Elastomers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Die Erfindung betrifft einen Gasfederspeicher zum Ändern eines hydraulischen Drucks in einer Federungseinrichtung, insbesondere eines Kraftwagens, nach dem Oberbegriff von Patentanspruch 1.The The invention relates to a gas spring accumulator for changing a hydraulic pressure in a suspension device, in particular of a motor vehicle, according to the preamble of claim 1.
Die
Um die Kennlinie solcher Gasfederspeicher derart zu optimieren, dass auch bei geringen Druckänderungen durch geringe Hydraulikflüssigkeitsvolumenströme ermöglicht werden, ist es bekannt, zusätzliche Kraftbeaufschlagungselemente vorzusehen, welche eine Membran, die den Gasraum vom Hydraulikraum trennt, mit einer entgegen der Gasdruckrichtung wirkenden Kraft beaufschlagbar ist. Solche Kraftbeaufschlagungselemente sind in der Regel als Federn ausgeführt und üben bei niedrigen Gasdrücken eine zusätzliche Gegenkraft auf die Membran aus. Die Federkennlinie des Gasfederspeichers entspricht damit einer Serienschaltung zweier Federelemente.Around to optimize the characteristic of such gas spring memory such that even at low pressure changes due to low hydraulic fluid flow rates it is known to be additional To provide Kraftbeaufschlagungselemente which a membrane, the separates the gas space from the hydraulic space, with one opposite to the gas pressure direction Acting force can be acted upon. Such Kraftbeaufschlagungselemente are usually designed as feathers and exercise at low gas pressures an additional counterforce on the membrane. The spring characteristic of the gas spring accumulator corresponds thus a series connection of two spring elements.
Nachteilig bei derartigen Gasfederspeichern ist, dass insbesondere bei im Hydraulikraum angeordneten zusätzlichen Federelementen diese einen gewissen Raumbedarf aufweisen und somit die Ausdehnung der den Hydraulikraum vom Gasraum trennenden Membran einschränken, so dass bei hohen Gasdrücken die Hydraulikflüssigkeit nicht vollständig aus dem Hydraulikraum ausgepresst werden kann.adversely in such gas spring accumulators is that in particular in the hydraulic chamber arranged additional spring elements this a certain Have space requirements and thus the extent of the hydraulic space Restrict membrane separating from the gas space, so that at high gas pressures, the hydraulic fluid is not can be completely squeezed out of the hydraulic chamber.
Es ist also Aufgabe der vorliegenden Erfindung, einen Gasfederspeicher der eingangs genannten Art zu verbessern.It So is the object of the present invention, a gas spring accumulator to improve the type mentioned.
Diese Aufgabe wird durch einen Gasfederspeicher mit den Merkmalen von Patentanspruch 1 gelöst.These Task is accomplished by a gas spring accumulator with the characteristics of Claim 1 solved.
Ein gattungsgemäßer Gasfederspeicher zum Ändern eines hydraulischen Drucks einer Federungseinrichtung insbesondere eines Kraftwagens umfasst einen Gasraum und einen Hydraulikraum, welcher mittels eines Trennelementes voneinander getrennt sind. Das Trennelement ist mittels eines in dem Gasraum herrschenden Gasdrucks zumindest bereichsweise in eine auf den Hydraulikraum hingerichtete Gasdruckrichtung bewegbar. Weiterhin ist wenigstens ein Kraftbeaufschlagungselement vorgesehen, mittels welchem das Trennelement mit einer entgegen der Gasdruckrichtung wirkenden Kraft beaufschlagbar ist.One generic gas spring storage for changing a hydraulic pressure of a suspension device in particular of a motor vehicle comprises a gas space and a hydraulic space, which separated by a separating element. The separating element is at least partially by means of a gas pressure prevailing in the gas space movable in an executed on the hydraulic chamber gas pressure direction. Furthermore, at least one force-applying element is provided, by means of which the separating element with a counter to the gas pressure direction Acting force can be acted upon.
Erfindungsgemäß ist vorgesehen, ein Kraftbeaufschlagungselement als im Hydraulikraum angeordneten Elastomerkörper auszubilden, wobei der Elastomerkörper wenigstens einen Aufnahmeraum für eine Hydraulikflüssigkeit umfasst. Der genannte Aufnahmeraum steht dabei mit der restlichen im Gasfederspeicher befindlichen Hydraulikflüssigkeit in Verbindung, so dass er im expandierten Zustand des Elastomerkörpers von dieser durchspült wird. Bei hohen Drücken wird der Elastomerkörper komprimiert, wodurch auch ein Volumen des wenigstens einen Aufnahmeraums abnimmt. In diesem befindliche Hydraulikflüssigkeit wird somit aus dem Aufnahmeraum ausgepresst und kann damit auch bei maximaler Kompression aus dem Hydraulikraum in die weiteren Komponenten der Federungseinrichtung gedrückt werden. Es wird somit im Gegensatz zu den eingangs beschriebenen Gasfederspeichern nach dem Stand der Technik kein Volumen des Hydraulikraumes durch das Kraftbeaufschlagungselement so blockiert, dass die in diesem Volumen befindliche Hydraulikflüssigkeit nicht mehr aus dem Hydraulikraum ausgepresst werden kann. Die Raumausnutzung des erfindungsgemäßen Gasfederspeichers ist somit verglichen mit dem Stand der Technik verbessert, was auch eine kompaktere und leichtere Bauweise ermöglicht.According to the invention provided, a Kraftbeaufschlagungselement than in the hydraulic chamber form arranged elastomeric body, wherein the elastomeric body at least one receiving space for a hydraulic fluid includes. The aforementioned recording room stands with the rest in the gas spring accumulator hydraulic fluid in communication, so that it is in the expanded state of the elastomer body is flushed by this. At high pressures the elastomeric body is compressed, which also causes a Volume of at least one receiving space decreases. Located in this Hydraulic fluid is thus squeezed out of the receiving space and can thus also with maximum compression from the hydraulic space be pressed into the other components of the suspension device. It is thus in contrast to the gas spring accumulators described above according to the prior art no volume of the hydraulic space through the force-applying element blocks so that in this volume Hydraulic fluid is no longer squeezed out of the hydraulic chamber can be. The space utilization of the invention Gas spring accumulator is thus compared with the prior art improved, which also allows a more compact and lighter construction.
Bevorzugt umfasst der Elastomerkörper dabei eine Mehrzahl von Aufnahmeräumen für die Hydraulikflüssigkeit. Diese Aufnahmeräume können dabei kanalartig oder taschenförmig ausgebildet sein, insbesondere ist eine schwammartige Ausprägung des Elastomerkörpers bevorzugt, um so ein maximales Aufnahmevolumen für Hydraulikflüssigkeit in den Innenräumen des Elastomerkörpers zu erzielen.Prefers the elastomeric body comprises a plurality of receiving spaces for the hydraulic fluid. These recording rooms can be channel-like or pocket-shaped in particular, is a spongy expression of Elastomer body preferred, so a maximum receiving volume for hydraulic fluid in the interiors to achieve the elastomeric body.
In Ausgestaltung der Erfindung umfasst ein Gehäuse des Gasfederspeichers weiterhin einen Anbindungsbereich für ein Kopflager zur Lagerung des Gasfederspeichers an einem Karosseriebauteil des Kraftwagens. Kopflager und Gasfederspeicher werden in aus dem Stand der Technik bekannten Federungseinrichtungen in der Regel zweiteilig ausgeführt. Die direkte Anbindung des Kopflagers an das Gehäuse des Gasfederspeichers ermöglicht dabei eine kompaktere und leichtere Bauweise.In an embodiment of the invention, a housing of the gas spring accumulator further comprises a connection area for a head bearing for supporting the Gas spring accumulator on a bodywork component of the motor vehicle. Head bearings and gas spring accumulator are usually made in two parts in known from the prior art suspension devices. The direct connection of the head bearing to the housing of the gas spring accumulator allows for a more compact and lighter design.
In weiterer Ausgestaltung der Erfindung ist das Kraftbeaufschlagungselement durch eine Feder, insbesondere durch eine metallische Feder, oder durch ein Schaummaterial oder durch eine Gasfeder mit Membran oder durch einen Kolben gebildet ist.In Another embodiment of the invention is the Kraftbeaufschlagungselement by a spring, in particular by a metallic spring, or by a foam material or by a gas spring with membrane or through a piston is formed.
Die Erfindung betrifft schließlich weiterhin einen Kraftwagen mit einem Gasfederspeicher mit den beschriebenen Merkmalen.The Finally, the invention relates to a motor vehicle with a gas spring accumulator with the features described.
Im Folgenden soll anhand der Zeichnung die Erfindung und ihre Ausführungsformen näher erläutert werden. Hierbei zeigen:in the Below is the invention and its embodiments with reference to the drawing be explained in more detail. Hereby show:
- 1010
- GasfederspeicherGas spring
- 1212
- Gasraumheadspace
- 1414
- Membranmembrane
- 1616
- Hydraulikraumhydraulic chamber
- 1818
- DurchtrittsöffnungThrough opening
- 2020
- Hydraulikleitunghydraulic line
- 2222
- Pfeilarrow
- 2424
- ElastomerfederelementElastomer spring element
- 2626
- Oberflächesurface
- 2828
- Kanälechannels
- 3030
- Gehäusecasing
- 3232
- oberer Bereichupper Area
- 3434
- Aufnahmeadmission
- 3636
- Kopflagerhead bearing
- 3838
- Lagerzapfenpivot
- 4040
- Elastomerlagerelastomeric bearings
- 4242
- Gegenlagerthrust bearing
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 10107631 A1 [0002] - DE 10107631 A1 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810046632 DE102008046632A1 (en) | 2008-09-10 | 2008-09-10 | Gas spring accumulator for changing hydraulic pressure of suspension device in motor vehicle, has powering element formed as elastomer body arranged in hydraulic area, where powering element comprises receiving space for hydraulic fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810046632 DE102008046632A1 (en) | 2008-09-10 | 2008-09-10 | Gas spring accumulator for changing hydraulic pressure of suspension device in motor vehicle, has powering element formed as elastomer body arranged in hydraulic area, where powering element comprises receiving space for hydraulic fluid |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008046632A1 true DE102008046632A1 (en) | 2009-05-07 |
Family
ID=40514570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810046632 Withdrawn DE102008046632A1 (en) | 2008-09-10 | 2008-09-10 | Gas spring accumulator for changing hydraulic pressure of suspension device in motor vehicle, has powering element formed as elastomer body arranged in hydraulic area, where powering element comprises receiving space for hydraulic fluid |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008046632A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10107631A1 (en) | 2001-02-15 | 2002-09-05 | Freudenberg Carl Kg | Method and device for controlling the suspension behavior in vehicles with hydropneumatic suspension devices and highly variable axle load ratios |
-
2008
- 2008-09-10 DE DE200810046632 patent/DE102008046632A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10107631A1 (en) | 2001-02-15 | 2002-09-05 | Freudenberg Carl Kg | Method and device for controlling the suspension behavior in vehicles with hydropneumatic suspension devices and highly variable axle load ratios |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140401 |