DE102010060865A1 - Pneumatic spring-damper-unit for e.g. wheel suspension in motor vehicle, has concentric support ring including working surface, where wall of bellows lies at surface under pressure application and emerges from clamping point of bellows - Google Patents
Pneumatic spring-damper-unit for e.g. wheel suspension in motor vehicle, has concentric support ring including working surface, where wall of bellows lies at surface under pressure application and emerges from clamping point of bellows Download PDFInfo
- Publication number
- DE102010060865A1 DE102010060865A1 DE201010060865 DE102010060865A DE102010060865A1 DE 102010060865 A1 DE102010060865 A1 DE 102010060865A1 DE 201010060865 DE201010060865 DE 201010060865 DE 102010060865 A DE102010060865 A DE 102010060865A DE 102010060865 A1 DE102010060865 A1 DE 102010060865A1
- Authority
- DE
- Germany
- Prior art keywords
- bellows
- support ring
- piston rod
- damper
- housing
- 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.)
- Ceased
Links
- 239000000725 suspension Substances 0.000 title description 3
- 238000005096 rolling process Methods 0.000 claims abstract description 29
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims 6
- 229920001971 elastomer Polymers 0.000 abstract 1
- 239000000806 elastomer Substances 0.000 abstract 1
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/0454—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane
-
- 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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
Abstract
Description
Die Erfindung bezieht sich auf eine pneumatische Feder-Dämpfer-Einheit nach dem Oberbegriff des Anspruchs 1.The invention relates to a pneumatic spring-damper unit according to the preamble of claim 1.
Pneumatische Feder-Dämpfer-Einheiten, wie Luftfeder-Dämpfer-Einheiten, der im Oberbegriff des Anspruchs 1 geschilderten Art werden vorwiegend in der Kraftfahrzeugtechnik, beispielsweise für die Radaufhängung oder auch für einen federnden Fahrersitz oder auch für eine federnde Fahrerkabine eingesetzt.Pneumatic spring-damper units, such as air spring-damper units, the type described in the preamble of claim 1 are mainly used in automotive engineering, for example, for the suspension or for a resilient driver's seat or for a springy driver's cab.
Aus der
Der Kolben teilt den Zylinderraum des Gehäuses in einen beim Einfedern sich verkleinernden und einen sich vergrößernden Druckraum auf, von denen einer nach außen über einen Gehäuseanschluss mit einer Druckluftquelle und die untereinander durch eine oder mehrere, im Kolben angeordnete Stromdrosseln verbunden sind.The piston divides the cylinder space of the housing into a pressure chamber which reduces in size during compression and an enlarging pressure chamber, one of which is connected to the outside via a housing connection to a compressed air source and to one another by means of one or more flow restrictors arranged in the piston.
Werden oberes und unteres Stützlager der Gasfeder-Dämpfer-Einheit beweglich an die abzufedernden Bauteile angelenkt, kommt es zu Schwenkbewegungen der Kolbenachse gegenüber der Zylinderachse. Die Größe der Öffnung des Deckels begrenzt die Schwenkbewegung der Kolbenachse zur Zylinderachse. Bei größeren Schrägstellungswinkeln des Kolbens kann es dadurch zu Problemen kommen, wenn die Gasfeder-Dämpfer-Einheit eingefedert ist. In dieser Position kann es zu einer Verklemmung der Kolbenstange an dem Deckel kommen, durch dessen zentrische Öffnung die Kolbenstange nach außen geführt ist.If upper and lower support bearings of the gas spring-damper unit are articulated movably to the components to be spring-loaded, pivoting movements of the piston axis relative to the cylinder axis occur. The size of the opening of the lid limits the pivotal movement of the piston axis to the cylinder axis. With larger skew angles of the piston, this can cause problems when the gas spring-damper unit is compressed. In this position, it can lead to a jamming of the piston rod to the lid, through the central opening of the piston rod is guided to the outside.
Eine sehr große Schrägstellung der Kolbenachse zur Zylinderachse kann auch dazu führen, dass eine erhebliche Schrägstellung der Dämpferkolbenscheibe verursacht wird und dadurch die Abdichtung der beiden Räume nicht mehr gewährleistet ist.A very large inclination of the piston axis to the cylinder axis can also cause a significant inclination of the damper piston disk is caused and thus the sealing of the two rooms is no longer guaranteed.
Im eingefederten Zustand besteht auch die Gefahr, dass die Balginnenwand des Rollbalges gegen die axial äußere, umlaufende Kante der Öffnung des Gehäusedeckels gedrückt wird, so dass es zu Beschädigungen der empfindlichen dünnen Rollbalgwand kommen kann. Die Beschädigung der Rollbalgwand kann zu einem Ausfallen des durch den Rollbalg abgeschlossenen Druckraumes führen.In the sprung state, there is also the risk that the bellows inner wall of the rolling bellows is pressed against the axially outer, circumferential edge of the opening of the housing cover, so that it can damage the sensitive thin Rollbalgwand come. The damage of the rolling bellows wall can lead to a failure of the closed by the rolling bellows pressure chamber.
Der Erfindung liegt die Aufgabe zugrunde, bei einer eingangs geschilderten Gasfeder-Dämpfer-Einheit die Schwenkbewegungen der Kolbenachse zur Zylinderachse zu begrenzen, so dass eine Verklemmung und/oder eine Beschädigung der Rollbalgwand aufgrund übermäßiger Schwenkbewegung der Kolbenachse vermieden werden.The invention has for its object to limit the pivotal movements of the piston axis to the cylinder axis in a gas spring damper unit described above, so that jamming and / or damage to the Rollbalgwand be avoided due to excessive pivotal movement of the piston axis.
Die Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.The object is solved by the characterizing features of claim 1.
Durch die Anordnung des erfindungsgemäßen Stützringes wird eine ständig bleibende Kraft auf den Rollbalg im Bereich der oberen Einspannstelle ausgeübt, so dass sich Verschlussdeckel und Kolbenstange gegeneinander immer wieder annähernd zentrieren und ein Abstand zwischen Kolbenstange und Öffnung des Gehäusedeckels gewährleistet bleibt.Due to the arrangement of the support ring according to the invention, a permanent force is exerted on the rolling bellows in the region of the upper clamping point, so that closure cover and piston rod against each other almost always centered and a distance between the piston rod and opening of the housing cover is guaranteed.
Der Innendruck der Luftfeder erzeugt eine Flächenkraft welche durch den anliegenden Balg senkrecht auf die Kontaktfläche des Stützringes übertragen wird. Durch die Radialkraftkomponente der daraus resultierenden Reaktionskraft des Stützringes kommt es bei einer Radialkraftdifferenz aufgrund schräg stehender Längsachsen von Gehäuse und Kolben zu einem Rückstellmoment, wodurch die Längsachsen von Gehäuse und Kolben wieder einem koaxialen Zustand angenähert werden.The internal pressure of the air spring generates a surface force which is transmitted by the adjacent bellows perpendicular to the contact surface of the support ring. Due to the radial force component of the resulting reaction force of the support ring occurs at a radial force difference due to oblique longitudinal axes of the housing and piston to a restoring moment, whereby the longitudinal axes of the housing and piston are again approximated to a coaxial state.
In vorteilhafter Ausgestaltung der Erfindung ist der Stützring als Stützglocke ausgebildet.In an advantageous embodiment of the invention, the support ring is designed as a support bell.
In weiterer vorteilhafter Ausgestaltung der Erfindung ist der konzentrische Stützring aus einem metallenen Werkstoff, insb. Stahl.In a further advantageous embodiment of the invention, the concentric support ring made of a metal material, esp. Steel.
In weiterer vorteilhafter Ausgestaltung der Erfindung besteht der konzentrische Stützring aus einem elastomeren Werkstoff oder aus Kunststoff.In a further advantageous embodiment of the invention, the concentric support ring made of an elastomeric material or plastic.
Anhand der Zeichnung werden nachstehend zwei Ausführungsbeispiele der Erfinder näher erläutert. Es zeigtWith reference to the drawing, two embodiments of the inventor will be explained in more detail below. It shows
Die in den
Der Innenraum des Zylindergehäuses
Der obere Feder-Dämpferraum
Die Kolbenstange
Das Gehäuse ist an seinem oberen Verschlussdeckel
Der Kolben
Unterhalb des durch den Gehäusedeckel
Der Rollbalg
Die
Der Innendruck Pi im Rollbalg
Der Winkel α des Stützringes
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1111
- Zylindergehäusecylinder housing
- 1212
- Verschlussdeckelcap
- 1313
- Gehäusedeckelhousing cover
- 1414
- Scheibenförmiger KolbenDisc-shaped piston
- 1515
- Kolbenstangepiston rod
- 1616
- Öffnung des GehäusedeckelsOpening of the housing cover
- 1717
- Abrollkonturrolling contour
- 1818
- Elastomerer RollbalgElastomeric rolling bellows
- 1919
- Spannring; Einspannstelle KolbenstangeClamping ring; Clamping piston rod
- 2121
- Spannring; Einspannstelle GehäuseClamping ring; Clamping housing
- 2222
- Kragencollar
- 2323
- Oberer Feder-DämpferraumUpper spring damper chamber
- 2424
- Unterer Feder-DämpferraumLower spring damper chamber
- 2626
- Drosselelementthrottle element
- 2727
- Befestigungslagermounting bearings
- 2828
- Befestigungslagermounting bearings
- 2929
- Stützringsupport ring
- 3131
- Arbeitsfläche des StützringesWorking surface of the support ring
- 3232
- elastomerer Pufferelastomeric buffer
- 3333
- Stützglockesupport bell
- 3434
- Zylindrischer Endabschnitt der StützglockeCylindrical end section of the support bell
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 3641623 C2 [0003] DE 3641623 C2 [0003]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010060865 DE102010060865A1 (en) | 2010-11-29 | 2010-11-29 | Pneumatic spring-damper-unit for e.g. wheel suspension in motor vehicle, has concentric support ring including working surface, where wall of bellows lies at surface under pressure application and emerges from clamping point of bellows |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010060865 DE102010060865A1 (en) | 2010-11-29 | 2010-11-29 | Pneumatic spring-damper-unit for e.g. wheel suspension in motor vehicle, has concentric support ring including working surface, where wall of bellows lies at surface under pressure application and emerges from clamping point of bellows |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010060865A1 true DE102010060865A1 (en) | 2012-05-31 |
Family
ID=46049764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201010060865 Ceased DE102010060865A1 (en) | 2010-11-29 | 2010-11-29 | Pneumatic spring-damper-unit for e.g. wheel suspension in motor vehicle, has concentric support ring including working surface, where wall of bellows lies at surface under pressure application and emerges from clamping point of bellows |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102010060865A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013203725A1 (en) | 2013-01-21 | 2014-07-24 | Engineering Center Steyr Gmbh & Co. Kg | Pneumatic spring for e.g. motor car, has air-filled bladder that is mounted on piston, stamper-shaped guide element of lower receiving element and is adapted to surround tubular portion of upper receiving element at outer-side |
WO2014111183A1 (en) | 2013-01-21 | 2014-07-24 | Engineering Center Steyr Gmbh & Co Kg | Air spring |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3641623C2 (en) | 1985-12-21 | 1988-09-29 | Henning Prof. Dr.-Ing. 6530 Bingen De Gold |
-
2010
- 2010-11-29 DE DE201010060865 patent/DE102010060865A1/en not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3641623C2 (en) | 1985-12-21 | 1988-09-29 | Henning Prof. Dr.-Ing. 6530 Bingen De Gold |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013203725A1 (en) | 2013-01-21 | 2014-07-24 | Engineering Center Steyr Gmbh & Co. Kg | Pneumatic spring for e.g. motor car, has air-filled bladder that is mounted on piston, stamper-shaped guide element of lower receiving element and is adapted to surround tubular portion of upper receiving element at outer-side |
WO2014111183A1 (en) | 2013-01-21 | 2014-07-24 | Engineering Center Steyr Gmbh & Co Kg | Air spring |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |