DE102008042251B3 - Steam valve for vibration damper in vehicle, has noise suppression unit formed by annular inertial flow channel that is assigned to passage channel, where flow channel is formed by helical-like pipe - Google Patents
Steam valve for vibration damper in vehicle, has noise suppression unit formed by annular inertial flow channel that is assigned to passage channel, where flow channel is formed by helical-like pipe Download PDFInfo
- Publication number
- DE102008042251B3 DE102008042251B3 DE102008042251A DE102008042251A DE102008042251B3 DE 102008042251 B3 DE102008042251 B3 DE 102008042251B3 DE 102008042251 A DE102008042251 A DE 102008042251A DE 102008042251 A DE102008042251 A DE 102008042251A DE 102008042251 B3 DE102008042251 B3 DE 102008042251B3
- Authority
- DE
- Germany
- Prior art keywords
- flow channel
- valve
- inertial flow
- damping
- channel
- 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
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
-
- 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
- F16F9/341—Special valve constructions; Shape or construction of throttling passages comprising noise-reducing or like features, e.g. screens
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Die Erfindung betrifft einen Schwingungsdämpfer gemäß dem Oberbegriff von Patentanspruch 1.The The invention relates to a vibration damper according to the preamble of claim 1.
Ein konventioneller Schwingungsdämpfer setzt kinetische Energie in Wärmeenergie um. Dabei wird Dämpfmedium durch mindestens einen Durchtrittskanal eines Dämpfventils verdrängt, wodurch ein Ventilkörper eine Austrittsöffnung des Durchtrittskanals freigibt. Während des Dämpfbetriebs können insbesondere bei höheren Anregungsfrequenzen Geräusche auftreten, die im Fahrzeuginnenraum deutlich hörbar sind.One conventional vibration damper sets kinetic energy into heat energy around. This is damping medium displaced by at least one passage channel of a damping valve, whereby a valve body an outlet opening the passage opens. During the damping operation, in particular at higher Excitation frequencies noises occur that are clearly audible in the vehicle interior.
Bisher
wurden Maßnahmen
am Dämpfventil durchgeführt, indem
z. B. spezielle Ventilscheiben zum Einsatz kamen. Eine weitere Maßnahme ist
z. B. aus der
Eine
andere Möglichkeit
besteht darin, dass man einen frequenzabhängigen Schwingungsdämpfer einsetzt,
bei dem eine schwingfähige
Masse einen Bypasskanal zum Dämpfventil
ansteuert. Beispielhaft wird auf die
Aus
der gattungsbildenden
Die Aufgabe der vorliegenden Erfindung besteht darin, eine weitere Variante eines Schwingungsdämpfers mit minimierter Geräuschbildung zu realisieren, wobei die Dämpfkraftcharakteristik des Schwingungsdämpfers möglichst unbeeinflusst bleiben soll.The Object of the present invention is a further variant a vibration damper with minimized noise to realize, with the damping force characteristic of the vibration damper preferably should remain unaffected.
Erfindungsgemäß wird die Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst.According to the invention Problem solved by the features of claim 1.
Versuche haben die geräuschunterdrückende Wirkung des Trägheitsströmungskanals bestätigt. Der große Vorteil besteht darin, dass man am Ventilkörper oder an den Ventilscheiben keinerlei Veränderungen durchführen muss, also weiterhin auf bewährte Standardbauteile zurückgreifen kann. Daraus ergibt sich die Möglichkeit, erst dann, wenn ein Geräuschproblem festgestellt wurde, den Trägheitsströmungskanal zu verwenden.tries have the noise-suppressing effect the inertial flow channel approved. Of the size The advantage is that you on the valve body or on the valve discs no changes carry out must, therefore, continue to be proven Resort to standard components can. This results in the possibility only when a noise problem has been detected, the inertial flow channel to use.
Das wendelförmige Rohr lässt sich sehr einfach an eine Trennscheibe zum Sammelraum befestigten. Diese Trennscheibe kann z. B. an einer Kolbenstange fixiert sein.The helical Tube leaves very easily attached to a cutting disc to the collection room. This blade can z. B. to be fixed to a piston rod.
Gemäß einem vorteilhaften Unteranspruch ist dem Dämpfventil in Reihe ein Sammelraum zugeordnet, der den Trägheitsströmungskanal mit dem Dämpfventil verbindet. Der Sammelraum erleichtert die Verwendung eines Standard-Dämpfventils, indem sich der Sammelraum dem Trägheitsströmungskanal anschließt.According to one advantageous subclaim is the damping valve in series a collecting space associated with the inertial flow channel with the damping valve combines. The plenum facilitates the use of a standard damping valve, by the collecting space the inertial flow channel followed.
Eine besonders bauraumsparende Variante zeichnet sich dadurch aus, dass der Trägheitsströmungskanal an einer Anschlagfeder ausgeführt ist. Sollte der Trägheitsströmungskanal aufgrund der Deformation der Anschlagfeder eingeschränkt oder gar ganz verschlossen sein, so spielt dieser Umstand keine Rolle, da bei diesen Anregungen die Wirkung des Trägheitsströmungskanals nicht benötigt wird.A particularly space-saving variant is characterized by the fact that the inertial flow channel executed on a stop spring is. Should the inertial flow channel Limited or due to the deformation of the stop spring even be completely closed, this circumstance does not matter since with these suggestions the effect of the inertial flow channel is not needed.
Der Trägheitsströmungskanal kann in beliebiger Bauform einer Anschlagfeder ausgeführt sein, beispielsweise in einer rohrförmigen Schraubendruckfeder oder auch in einem Elastomerkörper.Of the Inertial flow channel can be designed in any shape of a stop spring, for example in a tubular Helical compression spring or in an elastomer body.
Anhand der folgenden Figurenbeschreibung soll die Erfindung näher erläutert werden.Based The following description of the figures, the invention will be explained in more detail.
Die
Der
Kolben
Die
zylindrische Hülse
Bei
einer gewöhnlichen
Anregungsfrequenz von beispielsweise 15 hz wird Dämpfmedium
bei einer Kolbenstangenausfahrbewegung aus dem kolbenstangenseitigen
Arbeitsraum
Bei
sehr hohen Frequenzen, z. B. 200 Hz, wirkt sich die Massenträgheit der
in dem Trägheitsströmungskanal
Es
gilt:
Widerstand F⊤ an der Kolbenstange von
dem Trägheitsströmungskanal:
- ρ
- = Dichte des Dämpfmediums
- f
- = Frequenz (z. B. 200 hz)
- L
- = Länge des Trägheitsströmungskanals
- A⊤
- = Querschnitt des Trägheitsströmungskanals
- F
- = Querschnitt des kolbenstangenseitigen Arbeitsraums
Resistance F ⊤ on the piston rod from the inertial flow channel :
- ρ
- = Density of the damping medium
- f
- = Frequency (eg 200 hz)
- L
- = Length of inertial flow channel
- A ⊤
- = Cross section of the inertial flow channel
- F
- = Cross section of the piston rod side working space
Bei
einer Kolbenstangeneinfahrbewegung tritt das Dämpfmedium ausgehend vom komprimierten
kolbenstangenfernen Arbeitsraum erst in den Trägheitsströmungskanal
Die
Variante nach der
Die
In
der linken Schnitthälfte
ist die wendelförmige
Nut
Im
normalen Hubbereich und einer hochfrequenten Anregung wirkt der
Trägheitsströmungskanal
- 11
- Schwingungsdämpfervibration
- 33
- Zylindercylinder
- 55
- Kolbenstangepiston rod
- 77
- Kolbenpiston
- 9, 119 11
- DurchtrittskanälePassageways
- 13, 1513 15
- Ventilscheibenvalve discs
- 17, 1917 19
- Dämpfventildamping valve
- 2121
- kolbenstangenseitiger Arbeitsraumthe piston rod side working space
- 2323
- kolbenstangenferner Arbeitsraumpiston rod further working space
- 2525
- SchraubendruckfederHelical compression spring
- 2727
- KolbenbefestigungsmutterPiston fastening nut
- 2929
- Hülseshell
- 3131
- TrägheitsströmungskanalInertial flow channel
- 3333
- Sammelraumplenum
- 3535
- Trennscheibecutting wheel
- 3737
- Rohrpipe
- 3939
- Ringdichtungring seal
- 4141
- Nutgroove
- 4343
- Anschlagfederstop spring
- 4545
- VentilstützscheibeValve supporting disc
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008042251A DE102008042251B3 (en) | 2008-09-22 | 2008-09-22 | Steam valve for vibration damper in vehicle, has noise suppression unit formed by annular inertial flow channel that is assigned to passage channel, where flow channel is formed by helical-like pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008042251A DE102008042251B3 (en) | 2008-09-22 | 2008-09-22 | Steam valve for vibration damper in vehicle, has noise suppression unit formed by annular inertial flow channel that is assigned to passage channel, where flow channel is formed by helical-like pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008042251B3 true DE102008042251B3 (en) | 2010-04-08 |
Family
ID=41795317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008042251A Expired - Fee Related DE102008042251B3 (en) | 2008-09-22 | 2008-09-22 | Steam valve for vibration damper in vehicle, has noise suppression unit formed by annular inertial flow channel that is assigned to passage channel, where flow channel is formed by helical-like pipe |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008042251B3 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011080962A1 (en) * | 2011-08-15 | 2013-02-21 | Suspa Gmbh | damper |
CN103233970A (en) * | 2013-05-02 | 2013-08-07 | 苏州金牛精密机械有限公司 | Spring positioning jig |
EP3273088A1 (en) | 2016-07-19 | 2018-01-24 | BeijingWest Industries Co. Ltd. | Twin-tube hydraulic damper with a vibration suppressing device |
CN108027088A (en) * | 2015-09-18 | 2018-05-11 | 株式会社岛津制作所 | Pressure-control valve |
EP3351821A1 (en) | 2017-01-24 | 2018-07-25 | BeijingWest Industries Co. Ltd. | Twin-tube hydraulic damper with a vibration suppressing device |
WO2020074798A1 (en) * | 2018-10-12 | 2020-04-16 | Psa Automobiles Sa | Inertial hydraulic end-of-travel stop for a motor vehicle suspension |
FR3134154A1 (en) * | 2022-03-30 | 2023-10-06 | Psa Automobiles Sa | MOTOR VEHICLE INCLUDING AN OPTIMIZED END OF STROKE SHOCK ABSORBER |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2139942B1 (en) * | 1971-08-10 | 1972-11-09 | Fichtel & Sachs Ag, 8720 Schweinfurt | Vibration dampers, in particular for motor vehicles, with an additional damping valve that can be switched on as a function of the frequency |
DE2264139B2 (en) * | 1971-12-30 | 1976-12-09 | Monroe Belgium N.V., Sint-Truiden (Belgien) | HYDRAULIC SHOCK ABSORBER |
DE2727407A1 (en) * | 1977-06-18 | 1979-01-04 | Boge Gmbh | Vehicle shock absorber check valve - has seats in series, separated by expansion chamber to reduce noise |
DE3015596A1 (en) * | 1980-04-23 | 1981-10-29 | Fichtel & Sachs Ag, 8720 Schweinfurt | HYDRAULIC VIBRATION DAMPER WITH LOW-NOISE SHOCK VALVES |
DE8133344U1 (en) * | 1981-11-14 | 1982-04-22 | Fichtel & Sachs Ag, 8720 Schweinfurt | Hydraulic or hydropneumatic vibration damper |
DE19634014A1 (en) * | 1996-08-23 | 1998-02-26 | Mannesmann Sachs Ag | Shock absorber for vehicle or similar piston-cylinder arrangement |
DE10134122A1 (en) * | 2000-08-02 | 2002-05-16 | Zf Sachs Ag | Vibration damper for use in vehicles between chassis and wheel suspension has at least two working chambers and compensating chamber which are filled with damping fluid, flow channels between chambers producing rotational movement in fluid |
-
2008
- 2008-09-22 DE DE102008042251A patent/DE102008042251B3/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2139942B1 (en) * | 1971-08-10 | 1972-11-09 | Fichtel & Sachs Ag, 8720 Schweinfurt | Vibration dampers, in particular for motor vehicles, with an additional damping valve that can be switched on as a function of the frequency |
DE2264139B2 (en) * | 1971-12-30 | 1976-12-09 | Monroe Belgium N.V., Sint-Truiden (Belgien) | HYDRAULIC SHOCK ABSORBER |
DE2727407A1 (en) * | 1977-06-18 | 1979-01-04 | Boge Gmbh | Vehicle shock absorber check valve - has seats in series, separated by expansion chamber to reduce noise |
DE3015596A1 (en) * | 1980-04-23 | 1981-10-29 | Fichtel & Sachs Ag, 8720 Schweinfurt | HYDRAULIC VIBRATION DAMPER WITH LOW-NOISE SHOCK VALVES |
DE8133344U1 (en) * | 1981-11-14 | 1982-04-22 | Fichtel & Sachs Ag, 8720 Schweinfurt | Hydraulic or hydropneumatic vibration damper |
DE19634014A1 (en) * | 1996-08-23 | 1998-02-26 | Mannesmann Sachs Ag | Shock absorber for vehicle or similar piston-cylinder arrangement |
DE10134122A1 (en) * | 2000-08-02 | 2002-05-16 | Zf Sachs Ag | Vibration damper for use in vehicles between chassis and wheel suspension has at least two working chambers and compensating chamber which are filled with damping fluid, flow channels between chambers producing rotational movement in fluid |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011080962A1 (en) * | 2011-08-15 | 2013-02-21 | Suspa Gmbh | damper |
US8931603B2 (en) | 2011-08-15 | 2015-01-13 | Suspa Gmbh | Damper |
CN103233970A (en) * | 2013-05-02 | 2013-08-07 | 苏州金牛精密机械有限公司 | Spring positioning jig |
CN108027088A (en) * | 2015-09-18 | 2018-05-11 | 株式会社岛津制作所 | Pressure-control valve |
EP3273088A1 (en) | 2016-07-19 | 2018-01-24 | BeijingWest Industries Co. Ltd. | Twin-tube hydraulic damper with a vibration suppressing device |
US10221911B2 (en) | 2016-07-19 | 2019-03-05 | Beijingwest Industries Co., Ltd. | Twin-tube hydraulic damper with a vibration suppressing device |
EP3351821A1 (en) | 2017-01-24 | 2018-07-25 | BeijingWest Industries Co. Ltd. | Twin-tube hydraulic damper with a vibration suppressing device |
US10578183B2 (en) | 2017-01-24 | 2020-03-03 | Beijingwest Industries Co., Ltd. | Twin-tube hydraulic damper with a vibration suppressing device |
WO2020074798A1 (en) * | 2018-10-12 | 2020-04-16 | Psa Automobiles Sa | Inertial hydraulic end-of-travel stop for a motor vehicle suspension |
FR3087157A1 (en) * | 2018-10-12 | 2020-04-17 | Psa Automobiles Sa | HYDRAULIC STOPPER WITH MOTOR VEHICLE SUSPENSION LIMIT SWITCH |
FR3134154A1 (en) * | 2022-03-30 | 2023-10-06 | Psa Automobiles Sa | MOTOR VEHICLE INCLUDING AN OPTIMIZED END OF STROKE SHOCK ABSORBER |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140401 |