DE102006005621B4 - Stop spring for a piston-cylinder unit - Google Patents
Stop spring for a piston-cylinder unit Download PDFInfo
- Publication number
- DE102006005621B4 DE102006005621B4 DE200610005621 DE102006005621A DE102006005621B4 DE 102006005621 B4 DE102006005621 B4 DE 102006005621B4 DE 200610005621 DE200610005621 DE 200610005621 DE 102006005621 A DE102006005621 A DE 102006005621A DE 102006005621 B4 DE102006005621 B4 DE 102006005621B4
- Authority
- DE
- Germany
- Prior art keywords
- spring
- stop
- piston
- stop spring
- hydraulic
- 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.)
- Expired - Fee Related
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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
- F16F9/32—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
-
- 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
- F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
- F16F9/585—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder within the cylinder, in contact with working fluid
Abstract
Anschlagfeder für ein Kolben-Zylinderaggregat, umfassend eine hydraulische wirksame Baugruppe, bei der durch eine axiale Kompression Dämpfmedium durch mindestens eine Drosselöffnung verdrängt wird, wo aufweist, die funktional in Reihe zur hydraulisch wirksamen Baugruppe angeordnet ist, die von einem axial elastischen Elastomerkörper gebildet wird.Stop spring for a piston-cylinder unit, comprising a hydraulically active assembly, in which damping medium is displaced by an axial compression through at least one throttle opening, which is functionally arranged in series with the hydraulically active assembly, which is formed by an axially elastic elastomer body.
Description
Die Erfindung betrifft eine Anschlagfeder für ein Kolben-Zylinderaggregat gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to a stop spring for a piston-cylinder unit according to the preamble of
Aus der
Zum einen wurde festgestellt, dass bei einer langen Anschlagfeder, die auf einer Kolbenstange geführt ist, das zwischen der Kolbenstange und der Anschlagfeder befindliche Dämpfmediumvolumen nicht ausreichend sicher abströmen kann. In der Anschlagfeder sind zwar radiale Drosselöffnungen vorhanden, doch werden diese bei einer Kompressionsbewegung zunehmend verschlossen, so dass das Dämpfmedium über die Stirnflächen entweichen muss. In den Stirnflächen sind radial verlaufende Kanäle vorhanden, doch werden diese bei der Kompression zumindest teilweise in ihrem Wirkquerschnitt reduziert, so dass der Abfluss nur sehr stark gedrosselt erfolgen kann. Damit verändert sich die Kennlinie der Anschlagfeder tendenziell in Richtung zu einem progressiven Kraftverlauf.Firstly, it was found that with a long stop spring, which is guided on a piston rod, the damping medium volume located between the piston rod and the stop spring can not flow off sufficiently safely. Although radial throttle openings are present in the stop spring, they are increasingly closed during a compression movement, so that the damping medium must escape via the end faces. In the faces radially extending channels are present, but these are at least partially reduced in the compression cross section in the effective cross-section, so that the drain can be done only very much throttled. Thus, the characteristic curve of the stop spring tends to change in the direction of a progressive force curve.
Des Weiteren wurde festgestellt, dass der Elastomerkörper ab einer bestimmten Baulänge sehr starke Setzerscheinungen aufweist, die den Einsatzpunkt der Anschlagfeder deutlich verändern.Furthermore, it was found that the elastomeric body from a certain length has very strong settling phenomena that change the starting point of the stop spring significantly.
Die
Aus der
Die nachveröffentlichte
Aufgabe der vorliegenden Erfindung ist es, eine Anschlagfeder mit einer hydraulischen Dämpfwirkung zu realisieren, bei der ein über die Lebensdauer konstantes Betriebsverhalten gewährleistet werden kann.Object of the present invention is to realize a stop spring with a hydraulic damping effect, in which a constant over the life performance can be guaranteed.
Erfindungsgemäß wird die Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst.According to the invention, the object is solved by the features of
Der große Vorteil besteht darin, dass man einerseits einen dauerfesten hydraulischen Anschlag und andererseits einen einfachen mechanischen Anschlag vorliegen hat, die in Kombination die gewünschte Feder-Dämpfkraftkennlinie bewirken. Setzerscheinungen und kritische Abströmungseffekte am hydraulischen Bauteil treten auch bei einem sehr langen Federweg nicht auf. Des Weiteren reduziert sich der Montageaufwand sich beträchtlich.The great advantage is that on the one hand there is a durable hydraulic stop and on the other hand a simple mechanical stop, which in combination cause the desired spring damping force curve. Settling and critical outflow effects on the hydraulic component do not occur even with a very long travel. Furthermore, the assembly effort is reduced considerably.
Im Sinn einer Gleichteilkonstruktion ist an beiden Enden der Schraubenfeder jeweils ein einteilig mit dem Elastomerkörper ausgeführter Federteller angeordnet.In the sense of a common part construction, a spring plate, which is formed integrally with the elastomeric body, is arranged at each end of the helical spring.
Gemäß einem vorteilhaften Unteranspruch weist der Elastomerkörper eine Führungshülse für die Schraubenfeder auf.According to an advantageous embodiment, the elastomeric body has a guide sleeve for the helical spring.
Damit eine zuverlässig haltende Klemmverbindung zwischen dem Federteller und der Schraubenfeder vorliegt, ist die Führungshülse auf einem Längenabschnitt axial geschlitzt ausgeführt.So that a reliably holding clamping connection between the spring plate and the coil spring is present, the guide sleeve is designed to be axially slotted on a longitudinal section.
Zusätzlich kann dass die Führungshülse mit mindestens einem axialen Mitnahmesteg für die Schraubenfeder ausgeführt sein, so dass der Federteller axial beidseitig zur Schraubenfeder fixiert ist.In addition, that the guide sleeve be designed with at least one axial carrier web for the coil spring, so that the spring plate is fixed axially on both sides of the coil spring.
Zum Schutz der hydraulischen Baueinheit vor einer Überlastung bestimmt ein Anschlag die minimale komprimierte Länge der hydraulischen Baueinheit.To protect the hydraulic assembly against overload, a stop determines the minimum compressed length of the hydraulic assembly.
Dabei ist auch der Anschlag einteilig mit dem Federteller ausgeführt.In this case, the stop is made in one piece with the spring plate.
Zusätzlich kann vorgesehen sein, dass der Anschlag radial außerhalb der komprimierbaren hydraulischen Baueinheit angeordnet ist und auch die radiale Aufweitung begrenzt wird.In addition, it can be provided that the stop is arranged radially outside the compressible hydraulic unit and also the radial expansion is limited.
Anhand der folgenden Figurenbeschreibung soll die Erfindung näher erläutert werden.The invention will be explained in more detail with reference to the following description of the figures.
Es zeigt;It shows;
Die
Bei einer Kolbenstangenausfahrbewegung wird die Anschlagfeder
Aufgrund des deutlich größeren Federwegs der Schraubenfeder
Die
Aus den
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610005621 DE102006005621B4 (en) | 2006-02-06 | 2006-02-06 | Stop spring for a piston-cylinder unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610005621 DE102006005621B4 (en) | 2006-02-06 | 2006-02-06 | Stop spring for a piston-cylinder unit |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102006005621A1 DE102006005621A1 (en) | 2007-08-16 |
DE102006005621B4 true DE102006005621B4 (en) | 2012-01-26 |
Family
ID=38265884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610005621 Expired - Fee Related DE102006005621B4 (en) | 2006-02-06 | 2006-02-06 | Stop spring for a piston-cylinder unit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006005621B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11293509B2 (en) * | 2016-10-31 | 2022-04-05 | Hitachi Astemo, Ltd. | Rebound spring structure |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5964200B2 (en) * | 2012-10-19 | 2016-08-03 | Nok株式会社 | Rebound rubber |
DE102013207130A1 (en) * | 2013-04-19 | 2014-10-23 | Zf Friedrichshafen Ag | vibration |
DE102014211372A1 (en) * | 2014-06-13 | 2015-12-17 | Bayerische Motoren Werke Aktiengesellschaft | Guide element for a rebound stop spring of a suspension damper and suspension damper |
DE102015202839A1 (en) | 2015-02-17 | 2016-08-18 | Thyssenkrupp Ag | Vibration damper with cable stop |
US9599184B2 (en) * | 2015-02-20 | 2017-03-21 | Beijing West Industries Co., Ltd. | Fluid damper assembly having a multi-functional bushing |
DE102015106709A1 (en) * | 2015-04-30 | 2016-11-03 | Thyssenkrupp Ag | vibration |
DE102016215773A1 (en) * | 2016-08-23 | 2018-03-01 | Thyssenkrupp Ag | Bump stop for a vibration damper and a vibration damper for motor vehicles |
DE102022204341A1 (en) | 2022-05-03 | 2023-11-09 | Zf Friedrichshafen Ag | Tension stop for a tension stop spring of a vibration damper and vibration damper with the tension stop |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000042335A1 (en) * | 1999-01-19 | 2000-07-20 | Miner Enterprises, Inc. | Shock attenuating apparatus |
DE102004007961A1 (en) * | 2003-04-17 | 2004-10-28 | Zf Sachs Ag | Oscillation damper with extension stop has first spring designed as elastic component and second spring designed as helical spring, whereby elastic component is bounded by sleeve n its radial diameter enlargement |
DE102004007960A1 (en) * | 2004-02-18 | 2005-09-08 | Zf Friedrichshafen Ag | Piston cylinder device, used as shock absorber, contains spring or piston damping ring support made from elastomer material |
DE102004011971A1 (en) * | 2004-03-10 | 2005-09-22 | Zf Friedrichshafen Ag | Vibration damper comprises piston mounted in cylinder, stop system on piston rod consisting of spiral spring and plate spring mounted above it, spring rate of plate spring at its deepest point being greater than that of spiral spring |
EP1593874A1 (en) * | 2004-05-03 | 2005-11-09 | DaimlerChrysler AG | Vibration damper with extension stop |
DE102004034942A1 (en) * | 2004-07-20 | 2006-03-16 | Volkswagen Ag | Vibration absorber for motor vehicle, has traction stop with bellows, which are configured such that they attain compressed condition with sealing section, against inner wall of cylinder tube or external wall of piston rod |
DE102006022490A1 (en) * | 2005-06-18 | 2007-01-18 | Thyssenkrupp Bilstein Suspension Gmbh | Shock absorber and spring element for a shock absorber |
-
2006
- 2006-02-06 DE DE200610005621 patent/DE102006005621B4/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000042335A1 (en) * | 1999-01-19 | 2000-07-20 | Miner Enterprises, Inc. | Shock attenuating apparatus |
DE102004007961A1 (en) * | 2003-04-17 | 2004-10-28 | Zf Sachs Ag | Oscillation damper with extension stop has first spring designed as elastic component and second spring designed as helical spring, whereby elastic component is bounded by sleeve n its radial diameter enlargement |
DE102004007960A1 (en) * | 2004-02-18 | 2005-09-08 | Zf Friedrichshafen Ag | Piston cylinder device, used as shock absorber, contains spring or piston damping ring support made from elastomer material |
DE102004011971A1 (en) * | 2004-03-10 | 2005-09-22 | Zf Friedrichshafen Ag | Vibration damper comprises piston mounted in cylinder, stop system on piston rod consisting of spiral spring and plate spring mounted above it, spring rate of plate spring at its deepest point being greater than that of spiral spring |
EP1593874A1 (en) * | 2004-05-03 | 2005-11-09 | DaimlerChrysler AG | Vibration damper with extension stop |
DE102004034942A1 (en) * | 2004-07-20 | 2006-03-16 | Volkswagen Ag | Vibration absorber for motor vehicle, has traction stop with bellows, which are configured such that they attain compressed condition with sealing section, against inner wall of cylinder tube or external wall of piston rod |
DE102006022490A1 (en) * | 2005-06-18 | 2007-01-18 | Thyssenkrupp Bilstein Suspension Gmbh | Shock absorber and spring element for a shock absorber |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11293509B2 (en) * | 2016-10-31 | 2022-04-05 | Hitachi Astemo, Ltd. | Rebound spring structure |
Also Published As
Publication number | Publication date |
---|---|
DE102006005621A1 (en) | 2007-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120427 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |