DE3502479A1 - Hydraulically damped elastic mount - Google Patents
Hydraulically damped elastic mountInfo
- Publication number
- DE3502479A1 DE3502479A1 DE19853502479 DE3502479A DE3502479A1 DE 3502479 A1 DE3502479 A1 DE 3502479A1 DE 19853502479 DE19853502479 DE 19853502479 DE 3502479 A DE3502479 A DE 3502479A DE 3502479 A1 DE3502479 A1 DE 3502479A1
- Authority
- DE
- Germany
- Prior art keywords
- damping fluid
- damping
- hydraulically damped
- damped elastic
- bearing
- 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
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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of 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
- F16F9/006—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium characterised by the nature of the damping medium, e.g. biodegradable
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
Description
Hydraulisch gedämpftes elastisches LagerHydraulically damped elastic bearing
Die Erfindung bezieht sich auf hydraulisch gedämpfte elastische Lager, insbesondere Motorlager in Kraftfahrzeugen, mit einer durch Verformungen eines Gummi-Federelementes innerhalb des Lagergehäuses verdrängten Füllung einer Dämpfungsflüssigkeit.The invention relates to hydraulically damped elastic bearings, in particular engine mounts in motor vehicles, with a deformation of a rubber spring element inside the bearing housing displaced filling of a damping fluid.
Es ist seit langem übliche Praxis, die im Fahrbetrieb oder auch schon durch Unwuchten des Antriebsmotors hervorgerufenen Schwingungen elastischer Motorlager durch Verdrängen und gedrosseltes Uberströmen einer Flüssigkeit in einer mit dem Lager baulich zusammenhängenden Dämpfungsvorrichtung zum schnellen Abklingen zu bringen. Da die Cämpfungsvorrichtung andererseits aber auch wieder die Geräuschübertragung begünstigt, ist es erwünscht, die Dämpfung nach Belieben vorübergehend ausschalten zu können, in welchem Zustand die Lager dann mit dem deutlich niedrigeren Geräuschpegel eines rein elastischen ungedämpften Lagers wirksam sind. Zu diesem Zweck kann gemäß einem nicht zum Stand der Technik gehörenden Vorschlag die Dämpfungsflüssigkeit einem relativ zur Atmosphäre reduzierten Unterdruck ausgesetzt werden, worauf die in der Folge sich entwickelnden Dampfblasen die Gämpfungswirkung der Flüssigkeit praktisch aufheben. Wenn sich die Funktionsfähigkeit dieses Abschaltsystems inzwischen auch schon in der Praxis im Grunde erwiesen hat, traten verschiedentlich doch noch Störungen auf, weil das auf den Fahrzeugen verfügbare Vakuum nicht immer ausreichte, die notwendige Dampfblasen- bzw. Vakuolenbildung in der Dämpfungsflüssigkeit zu erzeugen. Der Erfindung liegt'demge- mäß als Aufgabe zugrunde, den Ubergang vom gedämpften auf den ungedämpften Schwingungszustand der Lager schon mit der Anwendung verhältnismäßig niedriger Unterdruckwerte im Größenordnungsbereich von Grobvakuum sicherzustellen.It has long been common practice that while driving or even before Vibrations in elastic motor bearings caused by imbalances in the drive motor by displacing and throttled overflow of a liquid in one with the Bearing structurally coherent damping device for rapid decay too bring. Since the Cämpfungsvorrichtung on the other hand, but also again the noise transmission favored, it is desirable to temporarily switch off the damping at will to be able to determine the condition of the bearings with the significantly lower noise level of a purely elastic undamped bearing are effective. To this end, according to a proposal not belonging to the prior art, the damping fluid are exposed to a reduced negative pressure relative to the atmosphere, whereupon the as a result, vapor bubbles develop the dampening effect of the liquid practically cancel. If the functionality of this shutdown system is meanwhile has already basically proven in practice, did occur on various occasions Malfunctions because the vacuum available on the vehicles was not always sufficient, the necessary formation of vapor bubbles or vacuoles in the damping liquid produce. The invention is therefore as a task based on the The transition from the damped to the undamped vibration state of the bearings is already possible with the use of relatively low negative pressure values in the order of magnitude ensure low vacuum.
Nach der Erfindung ist für elastische Lager der eingangs geschilderten Gattung vorgesehen, daß die Dämpfungsflüssigkeit unter der Einwirkung von Unterdruck auf den Flüssigkeitsspiegel ausdiffundierende Gase oder Gasgemische, z.B. Luft, in Lösung enthält, wobei die Dämpfungsflüsslgkeit selbst zweckmäßig ein Silikonöl ist. Die Erfindung macht sich damit die aus der Kolloidchemiebekannte Erscheinung zunutze, daß sich die Löslichkeit von Gasen in Flüssigkeiten durch Druckanwendung erhöht. Hieraus folgt umgekehrt aber, daß unter Atmosphärendruck in der Dämpfungsflüssigkeit gelöste Gase mit dem Absinken des Außendruckes sofort teilweise wieder aus der Lösung austreten - vergleichbar beispoelsweise etwa dem Öffnen einer Mineralwasserflasche, die in der Regel unter 3 bis 4 bar in die Trinkflüssigkeit eingepreßtes Kohlendioxid enthält. Die schon unter der Einwirkung grober Vakuumwerte in der Flüssigkeit sich bildenden Dampfblasen reichen volumenmäßig aber in jedem Falle aus, die Funktion der Dämpfungseinrichtung aufzuheben und das betroffene Lager auf akustische Sperre umzuschalten.According to the invention, the above-mentioned is for elastic bearings Type provided that the damping fluid under the action of negative pressure Gases or gas mixtures diffusing out onto the liquid level, e.g. air, in solution, the damping fluid itself expediently being a silicone oil is. The invention thus makes the phenomenon known from colloid chemistry take advantage of the fact that the solubility of gases in liquids is increased by the application of pressure elevated. Conversely, it follows from this, however, that the damping fluid is under atmospheric pressure dissolved gases immediately partially out of the solution again when the external pressure drops emerge - comparable, for example, to opening a mineral water bottle, the carbon dioxide, which is usually pressed into the drinking liquid under 3 to 4 bar contains. Which are already under the influence of rough vacuum values in the liquid Forming vapor bubbles suffice in terms of volume in any case, the function cancel the damping device and the affected camp on acoustic block to switch.
Hinsichtlich der erwünschten Lösungseigenschaften hat sich Silikonöl als besonders günstig erwiesen. Die Erfindung ist aber nicht auf die Verwendung eines bestimmten Füllmediums festgeschrieben, und ebensowenig sind Einsatzbeschränkungen aus der Bauart oder der Funktion der Lager herzuleiten.With regard to the desired solution properties, silicone oil has proven itself proved to be particularly favorable. The invention, however, is not intended to be used of a specific filling medium, and there are no restrictions on use either derived from the design or function of the bearings.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853502479 DE3502479A1 (en) | 1985-01-25 | 1985-01-25 | Hydraulically damped elastic mount |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853502479 DE3502479A1 (en) | 1985-01-25 | 1985-01-25 | Hydraulically damped elastic mount |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3502479A1 true DE3502479A1 (en) | 1986-07-31 |
DE3502479C2 DE3502479C2 (en) | 1989-06-08 |
Family
ID=6260767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19853502479 Granted DE3502479A1 (en) | 1985-01-25 | 1985-01-25 | Hydraulically damped elastic mount |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3502479A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4881724A (en) * | 1987-08-07 | 1989-11-21 | General Motors Corporation | Flexible mounting for engines, machine assemblies and the like |
EP0604867A1 (en) * | 1992-12-29 | 1994-07-06 | VELA S.r.L. | Antivibrating element |
CN1059623C (en) * | 1995-06-14 | 2000-12-20 | 罗伯特-博希股份公司 | Manual toolroom machine and used battery unit thereof and manual toolroom machine with battery unit |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1128586B (en) * | 1959-09-02 | 1962-04-26 | Hoesch Ag | Process for avoiding cavitation in hydraulic and hydro-pneumatic devices |
DE1174112B (en) * | 1962-07-12 | 1964-07-16 | Stabilus Ind Und Handelsgesell | Damping or control fluid for hydro-pneumatic shock absorbers, suspension strut. like |
DE2302657A1 (en) * | 1972-01-19 | 1973-08-02 | Raufoss Ammunisjonsfabrikker | ENERGY ABSORBERS |
EP0012638A1 (en) * | 1978-12-07 | 1980-06-25 | Automobiles Peugeot | Elastic mounting, particularly for the suspension of a vehicle motor |
DE2921866A1 (en) * | 1979-05-30 | 1980-12-04 | Georg Albersinger | Rubber spring with damping action - has chamber between outer frame base and member vulcanised round pipe |
DE3419851A1 (en) * | 1984-05-28 | 1985-11-28 | Continental Gummi-Werke Ag, 3000 Hannover | HYDRAULICALLY DAMPED BEARING |
-
1985
- 1985-01-25 DE DE19853502479 patent/DE3502479A1/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1128586B (en) * | 1959-09-02 | 1962-04-26 | Hoesch Ag | Process for avoiding cavitation in hydraulic and hydro-pneumatic devices |
DE1174112B (en) * | 1962-07-12 | 1964-07-16 | Stabilus Ind Und Handelsgesell | Damping or control fluid for hydro-pneumatic shock absorbers, suspension strut. like |
DE2302657A1 (en) * | 1972-01-19 | 1973-08-02 | Raufoss Ammunisjonsfabrikker | ENERGY ABSORBERS |
EP0012638A1 (en) * | 1978-12-07 | 1980-06-25 | Automobiles Peugeot | Elastic mounting, particularly for the suspension of a vehicle motor |
DE2921866A1 (en) * | 1979-05-30 | 1980-12-04 | Georg Albersinger | Rubber spring with damping action - has chamber between outer frame base and member vulcanised round pipe |
DE3419851A1 (en) * | 1984-05-28 | 1985-11-28 | Continental Gummi-Werke Ag, 3000 Hannover | HYDRAULICALLY DAMPED BEARING |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4881724A (en) * | 1987-08-07 | 1989-11-21 | General Motors Corporation | Flexible mounting for engines, machine assemblies and the like |
EP0604867A1 (en) * | 1992-12-29 | 1994-07-06 | VELA S.r.L. | Antivibrating element |
CN1059623C (en) * | 1995-06-14 | 2000-12-20 | 罗伯特-博希股份公司 | Manual toolroom machine and used battery unit thereof and manual toolroom machine with battery unit |
Also Published As
Publication number | Publication date |
---|---|
DE3502479C2 (en) | 1989-06-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: CONTINENTAL AKTIENGESELLSCHAFT, 3000 HANNOVER, DE |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |