WO2018103983A1 - Air spring module having a shock absorber - Google Patents
Air spring module having a shock absorber Download PDFInfo
- Publication number
- WO2018103983A1 WO2018103983A1 PCT/EP2017/078560 EP2017078560W WO2018103983A1 WO 2018103983 A1 WO2018103983 A1 WO 2018103983A1 EP 2017078560 W EP2017078560 W EP 2017078560W WO 2018103983 A1 WO2018103983 A1 WO 2018103983A1
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- WO
- WIPO (PCT)
- Prior art keywords
- piston
- cylinder
- rolling
- air spring
- base body
- 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
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Classifications
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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
- F16F9/02—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
- F16F9/057—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 characterised by the piston
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
- B60G15/12—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G99/00—Subject matter not provided for in other groups of this subclass
- B60G99/008—Other suspension arrangements with fluid springs
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/002—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
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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
- F16F9/02—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
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- 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
- B60G2202/152—Pneumatic spring
Definitions
- the invention relates to an air spring module with a shock absorber having a cylinder whose fluid-filled interior is divided by a displaceable piston in a first working chamber and a second working chamber, which are connected to each other via a throttle connection, wherein the piston is a piston rod comprising, which is guided through the second working chamber and sealed to the outside Shen and is attached with its outer end to a lid, with an airtight and filled with air rolling bellows, which surrounds the piston rod with a radial distance and with its one end to the lid and with its other end fixed in the end portion of the cylinder closer to the cover, with a rolling piston surrounding the end of the cylinder closer to the cylinder, the tubular rolling piston connected to the cylinder and the end of the rolling bellows remote from the cover to the region of the cover remote End region of the rolling piston protrudes.
- the object of the invention is to provide an air spring module with a shock absorber of the type mentioned, to avoid these disadvantages and to allow assembly with fewer components and to reduce the risk of failure.
- a base body is arranged, which is enclosed by the rolling piston and connected thereto, wherein the rolling bellows with his closer to the cylinder end tightly connected to the flange-like body and the piston rod is guided through a coaxial opening of the body and sealed by a seal between the body and piston rod into the interior of the rolling bellows.
- the air suspension module with a shock absorber carries a cab of a utility vehicle.
- the lid facing the end of the cylinder may be connected to the holder for holding the cylinder.
- the main body can extend over part of the length of the cylinder.
- the cylindrical interior of the cylinder may be provided with a lubricious coating.
- the base body and / or the rolling piston can be made of a plastic, to achieve a high stability with a small size preferably the plastic of the base body is a fiber-reinforced plastic.
- the piston rod can pass through a guide opening projecting into the interior of the rolling bellows, which is formed on the cover-side closure of the cylinder or on the base body.
- shock absorber is that the interior of the cylinder is filled with a hydraulic fluid.
- the volume balance for the hydraulic fluid, the first working chamber via a valve assembly with a compensation chamber be connectable, the valve assembly comprises a leading from the first working chamber to the compensation space biased exhaust valve and a leading from the expansion chamber to the first working chamber biased inlet valve.
- the interior of the cylinder is filled with a gaseous fluid.
- a separating piston which separates the first working chamber from a gas space filled with a gas under pressure, for volume compensation of the gaseous fluid in the end region of the first working chamber facing away from the piston can be arranged in a sealed manner.
- the expansion chamber or the gas space can be formed by a cup opening exhibiting pot-like housing part, which tightly surrounds the mouth of the pot opening facing away from the end of a lid connected to the base member.
- the main body can be formed in the piston rod-side end portion of the cylinder and / or in the piston rod distal end portion of the cylinder flange radially expanded to cover the area between the lid-side end of the rolling piston and the piston rod or to form the compensation chamber on the piston rod side facing away from the cylinder.
- the rolling piston in the longitudinal direction of extension of the piston rod may be formed in several parts and the several parts of the rolling piston in its operating position on the base body are axially fixed.
- the parts of the rolling piston can be fixed radially inwardly into contact with the outer contour of the body, for which the parts of the rolling piston can be enclosed by a radially inwardly biased spring element in an easy mountable manner.
- Figure 1 shows a first embodiment of an air spring module with shock absorbers in longitudinal section
- Figure 2 shows a second embodiment of an air spring module with shock absorbers in longitudinal section.
- the air spring modules with shock absorbers shown in the figures have a cylinder 1, the interior of which is filled with a hydraulic fluid and divided by a piston 2 into a first working chamber 3 and a second working chamber 4.
- a piston rod 5 is arranged on one side, which is guided through the second working chamber 4 and sealed to the outside.
- the piston 2 has throttle connections forming axial passage openings 20, of which a part of the first working chamber 3 to the second working chamber 4th and another part of the second working chamber 3 to the first working chamber 4 leading check valves 21 have.
- a flange-like extended basic body 9 is arranged, which has a main body extension 6, 6 '. Both cylindrical main body extensions 6 and 6 'have a tubular middle part 8, wherein on the side of the first working chamber 3 of the
- Basic body extension 6, 6 ' is radially expanded to a storage part 10.
- Base body 9, main body extension 6, 6 'and storage part 10 are integrally formed from a fiber-reinforced plastic.
- the piston rod 5 is sealed by a seal 12 passed through a coaxial guide opening 1 1 of the base body 9 and carries at its free end a cover thirteenth
- tubular flexible bellows 14 At the radially outwardly encircling portion of the lid 13, one end of a sometimes pressurized gas filled, tubular flexible bellows 14 is attached to you. The second end of the rolling bellows 14 is fastened tightly to the radially encircling region of the main body 9.
- a rolling-resistant piston 15 made of a fiber-reinforced plastic is fastened to the radially circumferential region of the main body 9, which surrounds the base body 9 and the piston rod side region of the main body extension 6, 6 'and is fixed thereto ,
- the rolling piston is designed in several parts, wherein the parts of the rolling piston 15 in the longitudinal direction of the piston rod 5 are separated from each other, but in the illustrated operating position the base body 9 and the main body extension 6, 6 'completely enclose.
- the main body extension 6, 6 ' has radially outwardly projecting fixing lugs 16, which can be inserted into corresponding radially inwardly directed fixing openings 17 of the rolling piston 15.
- a radially circumferential groove 18 is formed, in which a radially inwardly biased elastic ring 19 is arranged, which biases and fixes the parts of the rolling piston 15 radially inwardly into contact with the outer contour of the base body 9 and main body extension ,
- a pot-like housing part 22 is arranged, which encloses with its mouth region of its pot opening sealed by a sealing ring 23, the storage part 10.
- the housing part 22 consisting of a metal sheet is fastened by radial circumferential curling into a radially encircling annular groove 24 on the storage part 10.
- the lower end of the memory part 10 is formed differently in the right half and the left half.
- the right half in Figure 1 and the left half in Figure 2 show a displaceable in the interior of the cylinder 1 separating piston 25.
- the space is filled with a gas under pressure gas space 26th
- Gas supply port 29 via a first line 31 to the gas space 26 and via a second line 32, which also leads through the base body 9, with the interior of the rolling bellows 14 connectable.
- the interior of the cylinder 1 is closed by a closure 27 in which a biased outlet valve 28 and a biased inlet valve, not shown, are arranged.
- the space is a compensating space 30 partially filled with a hydraulic fluid.
- hydraulic fluid can flow out of the first working chamber 3 via the outlet valve 28 into the equalizing space 30.
- hydraulic fluid flows from the
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Luftfedermodul mit einem Stoßdämpfer Air suspension module with a shock absorber
Die Erfindung bezieht sich auf ein Luftfedermodul mit einem Stoßdämpfer, der einen Zylinder aufweist, dessen mit einem Fluid gefüllter Innenraum von einem verschiebbaren Kolben in eine erste Arbeitskammer und eine zweite Arbeitskammer unterteilt ist, die über eine Drosselverbindung miteinander verbunden sind, wobei der Kolben eine Kolbenstange aufweist, die durch die zweite Arbeitskammer hindurch und abgedichtet nach au ßen geführt ist und mit ihrem äußeren Ende an einem Deckel befestigt ist, mit einem luftdichten und mit Luft gefüllten Rollbalg, der mit radialem Abstand die Kolbenstange umschließt und mit seinem einen Ende an dem Deckel sowie mit seinem anderen Ende in dem dem Deckel näheren Endbereich des Zylinders befestigt ist, mit einem dem den Deckel näheren Endbereich des Zylinders umschließenden Abrollkolben, wobei der rohrartig ausgebildete Abrollkolben mit dem Zylinder verbunden und das dem Deckel entfernte Ende des Rollbalgs zum Bereich des dem Deckel entfernten Endbereichs des Abrollkolbens ragt. The invention relates to an air spring module with a shock absorber having a cylinder whose fluid-filled interior is divided by a displaceable piston in a first working chamber and a second working chamber, which are connected to each other via a throttle connection, wherein the piston is a piston rod comprising, which is guided through the second working chamber and sealed to the outside Shen and is attached with its outer end to a lid, with an airtight and filled with air rolling bellows, which surrounds the piston rod with a radial distance and with its one end to the lid and with its other end fixed in the end portion of the cylinder closer to the cover, with a rolling piston surrounding the end of the cylinder closer to the cylinder, the tubular rolling piston connected to the cylinder and the end of the rolling bellows remote from the cover to the region of the cover remote End region of the rolling piston protrudes.
Bei einem derartigen Luftfedermodul mit einem Stoßdämpfer ist es bekannt das dem Deckel entfernte Ende des Rollbalgs mit dem dem Deckel zugewandten Ende des geschlossen rohrartig ausgebildeten Abrollkolbens dicht zu verbinden. Um einen Luftaustritt aus dem Rollbalg zu vermeiden ist eine Dichtung zwischen Rollbalg und Abrollkolben, eine weitere Dichtung zwischen Abrollkolben und Zylinder und eine dritte Dichtung zwischen dem kolbenstangenseitigen Endbereich des Zylinders und der Kolbenstange erforderlich. Diese drei abzudichtenden Bereiche erfordern einen erhöhten Montagebedarf und bedeuten aufgrund der Anzahl der Dichtbereiche auch ein erhöhtes Defektrisiko. In such an air spring module with a shock absorber, it is known that the lid remote from the end of the rolling bellows with the lid facing the end of the closed tube-like rolling piston tightly connect. In order to avoid air leakage from the rolling bellows a seal between rolling bellows and rolling piston, another seal between the rolling piston and cylinder and a third seal between the piston rod side end portion of the cylinder and the piston rod is required. These three areas to be sealed require increased installation requirements and, due to the number of sealing areas, also mean an increased risk of defects.
Aufgabe der Erfindung ist es ein Luftfedermodul mit einem Stoßdämpfer der eingangs genannten Art zu schaffen, diese Nachteile zu vermeiden und eine Montage mit weniger Bauteilen zu ermöglichen sowie das Defektrisiko zu reduzieren. The object of the invention is to provide an air spring module with a shock absorber of the type mentioned, to avoid these disadvantages and to allow assembly with fewer components and to reduce the risk of failure.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass im kolbenstangenseitigen Endbereich des Zylinders ein Grundkörper angeordnet ist, der von dem Abrollkolben umschlossen und mit diesem verbunden ist, wobei der Rollbalg mit seinem dem Zylinder näheren Ende dicht mit dem flanschartigen Grundkörper verbunden und die Kolbenstange durch eine koaxiale Öffnung des Grundkörpers hindurch und durch eine Dichtung zwischen Grundkörper und Kolbenstange abgedichtet in das Innere des Rollbalgs geführt ist. This object is achieved in that in the piston rod end portion of the cylinder, a base body is arranged, which is enclosed by the rolling piston and connected thereto, wherein the rolling bellows with his closer to the cylinder end tightly connected to the flange-like body and the piston rod is guided through a coaxial opening of the body and sealed by a seal between the body and piston rod into the interior of the rolling bellows.
Vorzugsweise trägt das Luftfedermodul mit einem Stoßdämpfer ein Fahrerhaus eines Nutzkraftwagens. Preferably, the air suspension module with a shock absorber carries a cab of a utility vehicle.
Es sind nunmehr nur noch zwei Dichtbereiche, nämlich zwischen dem Rollbalg und dem Grundkörper sowie zwischen dem Grundkörper und der Kolbenstange vorhanden. There are now only two sealing areas, namely between the rolling bellows and the body and between the body and the piston rod available.
Das dem Deckel zugewandte Ende des Zylinders kann zur Halterung des Zylinders mit dem Grundkörper verbunden sein. The lid facing the end of the cylinder may be connected to the holder for holding the cylinder.
Dabei kann der Grundkörper sich über einen Teil der Länge des Zylinders erstrecken. In this case, the main body can extend over part of the length of the cylinder.
Besonders montageaufwand- und bauteilsparend ist es, wenn der zylindrische Innenraum des Zylinders in dem Grundkörper oder in einem mit dem Grundkörper ein Bauteil bildenden Teil ausgebildet ist und somit kein separates Zylinderrohr erforderlich ist. It is particularly easy to assemble and to save on components when the cylindrical interior of the cylinder is formed in the base body or in a part forming a component with the base body and thus no separate cylinder tube is required.
Zur leichten Verschiebbarkeit des Kolbens im Innenraum des Zylinders kann der zylindrische Innenraum des Zylinders mit einer Gleitbeschichtung versehen sein. For ease of displacement of the piston in the interior of the cylinder, the cylindrical interior of the cylinder may be provided with a lubricious coating.
Eine wesentliche Reduzierung des Gewichts des Luftfedermoduls wird dadurch erreicht, dass der Grundkörper und/oder der Abrollkolben aus einem Kunststoff bestehen kann, wobei zur Erreichung einer hohen Stabilität bei geringer Baugröße vorzugsweise der Kunststoff des Grundkörpers ein faserverstärkter Kunststoff ist. Die Kolbenstange kann durch eine Führungsöffnung geführt in das Innere des Rollbalgs ragen, die an dem deckelseitigen Verschluss des Zylinders oder an dem Grundkörper ausgebildet ist. A substantial reduction in the weight of the air spring module is achieved in that the base body and / or the rolling piston can be made of a plastic, to achieve a high stability with a small size preferably the plastic of the base body is a fiber-reinforced plastic. The piston rod can pass through a guide opening projecting into the interior of the rolling bellows, which is formed on the cover-side closure of the cylinder or on the base body.
Eine Möglichkeit für den Stoßdämpfer besteht darin, dass der Innenraum des Zylinders mit einem hydraulischen Fluid gefüllt ist. One possibility for the shock absorber is that the interior of the cylinder is filled with a hydraulic fluid.
Dabei kann zum Volumenausgleich für das hydraulische Fluid die erste Arbeitskammer über eine Ventilanordnung mit einem Ausgleichsraum verbindbar sein, wobei die Ventilanordnung ein von der ersten Arbeitskammer zum Ausgleichsraum führendes vorgespanntes Auslassventil und ein von dem Ausgleichsraum zur ersten Arbeitskammer führendes vorgespanntes Einlassventil aufweist. In this case, the volume balance for the hydraulic fluid, the first working chamber via a valve assembly with a compensation chamber be connectable, the valve assembly comprises a leading from the first working chamber to the compensation space biased exhaust valve and a leading from the expansion chamber to the first working chamber biased inlet valve.
Es ist aber auch möglich, dass der Innenraum des Zylinders mit einem gasförmigen Fluid gefüllt ist. But it is also possible that the interior of the cylinder is filled with a gaseous fluid.
Dabei kann zum Volumenausgleich des gasförmigen Fluids in dem dem Kolben abgewandten Endbereich der ersten Arbeitskammer ein Trennkolben abgedichtet verschiebbar angeordnet sein, der die erste Arbeitskammer von einem mit einem unter einem Druck stehenden Gas gefüllten Gasraum trennt. In this case, a separating piston, which separates the first working chamber from a gas space filled with a gas under pressure, for volume compensation of the gaseous fluid in the end region of the first working chamber facing away from the piston can be arranged in a sealed manner.
In einfacher leicht montierbarer Ausbildung kann dabei der Ausgleichsraum oder der Gasraum durch ein eine Topföffnung aufweisendes topfartiges Gehäuseteil gebildet sein, das mit seinem Mündungsbereich der Topföffnung das dem Deckel abgewandte Ende eines mit dem Grundkörper verbundenen Bauteils dicht umschließt. In a simple easily mountable training while the expansion chamber or the gas space can be formed by a cup opening exhibiting pot-like housing part, which tightly surrounds the mouth of the pot opening facing away from the end of a lid connected to the base member.
Der Grundkörper kann im kolbenstangenseitigen Endbereich des Zylinders und/oder im kolbenstangenfernen Endbereich des Zylinders flanschartig radial erweitert ausgebildet sein, um den Bereich zwischen dem deckelseitigen Ende des Abrollkolbens und der Kolbenstange abzudecken bzw. um an der kolbenstangenabgewandten Seite des Zylinders den Ausgleichsraum zu bilden. Um dann den Abrollkolben montieren zu können, kann der Abrollkolben in Längser- streckungsrichtung der Kolbenstange mehrteilig ausgebildet sein und die mehreren Teile des Abrollkolbens in ihrer Betriebsposition an dem Grundkörper axial fixierbar sind. The main body can be formed in the piston rod-side end portion of the cylinder and / or in the piston rod distal end portion of the cylinder flange radially expanded to cover the area between the lid-side end of the rolling piston and the piston rod or to form the compensation chamber on the piston rod side facing away from the cylinder. In order then to mount the rolling piston, the rolling piston in the longitudinal direction of extension of the piston rod may be formed in several parts and the several parts of the rolling piston in its operating position on the base body are axially fixed.
Zur axialen Fixierung kann einfach montierbar der Grundkörper radial nach au ßen ragende Fixieransätze aufweisen, die in entsprechende radial nach innen mündende Fixieröffnungen der Teile des Abrollkolbens einsetzbar sind. For axial fixation can easily mount the body radially outward Shen protruding Fixieransätze, which can be used in corresponding radially inwardly opening fixing openings of the parts of the rolling piston.
Zur Fixierung des Abrollkolbens am Grundkörper können die Teile des Abrollkolbens radial nach innen in Anlage an der Außenkontur des Grundkörpers fixiert sein, wozu in einfach montierbarer Weise die Teile des Abrollkolbens von einem radial nach innen vorgespannten Federelement umschlossen sein können. To fix the rolling piston on the main body, the parts of the rolling piston can be fixed radially inwardly into contact with the outer contour of the body, for which the parts of the rolling piston can be enclosed by a radially inwardly biased spring element in an easy mountable manner.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im Folgenden näher beschrieben. Es zeigen: Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it:
Figur 1 ein erstes Ausführungsbeispiel eines Luftfedermoduls mit Stoßdämpfer im Längsschnitt Figure 1 shows a first embodiment of an air spring module with shock absorbers in longitudinal section
Figur 2 ein zweites Ausführungsbeispiel eines Luftfedermoduls mit Stoßdämpfer im Längsschnitt. Figure 2 shows a second embodiment of an air spring module with shock absorbers in longitudinal section.
Die in den Figuren dargestellten Luftfedermodule mit Stoßdämpfer weisen einen Zylinder 1 auf, dessen Innenraum mit einem hydraulischen Fluid gefüllt und durch einen Kolben 2 in eine erste Arbeitskammer 3 und eine zweite Arbeitskammer 4 unterteilt ist. An dem in dem Innenraum des Zylinders 1 axial verschiebbaren Kolben 2 ist einseitig eine Kolbenstange 5 angeordnet, die durch die zweite Arbeitskammer 4 hindurch und abgedichtet nach außen geführt ist. The air spring modules with shock absorbers shown in the figures have a cylinder 1, the interior of which is filled with a hydraulic fluid and divided by a piston 2 into a first working chamber 3 and a second working chamber 4. At the in the interior of the cylinder 1 axially displaceable piston 2, a piston rod 5 is arranged on one side, which is guided through the second working chamber 4 and sealed to the outside.
Der Kolben 2 weist Drosselverbindungen bildende axiale Durchgangsöffnungen 20 auf, von denen ein Teil von der ersten Arbeitskammer 3 zur zweiten Arbeitskammer 4 und ein anderer Teil von der zweiten Arbeitskammer 3 zur ersten Arbeitskammer 4 führende Rückschlagventile 21 aufweisen. The piston 2 has throttle connections forming axial passage openings 20, of which a part of the first working chamber 3 to the second working chamber 4th and another part of the second working chamber 3 to the first working chamber 4 leading check valves 21 have.
An dem Ende des Zylinders 1 ist auf der Seite der zweiten Arbeitskammer 4 ein flanschartig erweiterter Grundkörper 9 angeordnet, der einen Grundkörperfortsatz 6, 6' aufweist. Beide zylindrischen Grundkörperfortsätze 6 und 6' weisen ein rohrartiges Mittelteil 8 auf, wobei auf der Seite der ersten Arbeitskammer 3 der At the end of the cylinder 1, on the side of the second working chamber 4, a flange-like extended basic body 9 is arranged, which has a main body extension 6, 6 '. Both cylindrical main body extensions 6 and 6 'have a tubular middle part 8, wherein on the side of the first working chamber 3 of the
Grundkörperfortsatz 6, 6' zu einem Speicherteil 10 radial erweitert ist. Basic body extension 6, 6 'is radially expanded to a storage part 10.
Grundkörper 9, Grundkörperfortsatz 6, 6' und Speicherteil 10 sind einteilig aus einem faserverstärkten Kunststoff ausgebildet. Base body 9, main body extension 6, 6 'and storage part 10 are integrally formed from a fiber-reinforced plastic.
In Figur 1 ist der Innenraum des Zylinders 1 in dem Grundkörper 9 und dem zylindrischen Gundkörperfortsatz 6 ausgebildet, während in Figur 2 der Innenraum des Zylinders 1 der Innenraum eines Zylinderrohrs 7 ist, das mit radialem Abstand von dem zylindrischen Gundkörperfortsatz 6' umschlossen ist. In Figure 1, the interior of the cylinder 1 is formed in the base body 9 and the cylindrical Gundkörperfortsatz 6, while in Figure 2, the interior of the cylinder 1, the interior of a cylinder tube 7, which is enclosed at a radial distance from the cylindrical Gundkörperfortsatz 6 '.
Die Kolbenstange 5 ist durch eine Dichtung 12 abgedichtet durch eine koaxiale Führungsöffnung 1 1 des Grundkörpers 9 hindurchgeführt und trägt an ihrem freien Ende einen Deckel 13. The piston rod 5 is sealed by a seal 12 passed through a coaxial guide opening 1 1 of the base body 9 and carries at its free end a cover thirteenth
An dem radial außen umlaufenden Bereich des Deckels 13 ist das eine Ende eines mitunter einem Druck stehenden Gas gefüllten, schlauchartigen flexiblen Rollbalgs 14 dich befestigt. Das zweite Ende des Rollbalgs 14 ist an dem radial umlaufenden Bereich des Grundkörpers 9 dicht befestigt. At the radially outwardly encircling portion of the lid 13, one end of a sometimes pressurized gas filled, tubular flexible bellows 14 is attached to you. The second end of the rolling bellows 14 is fastened tightly to the radially encircling region of the main body 9.
An der dem Rollbalg 14 abgewandten Seite ist an dem radial umlaufenden Bereich des Grundkörpers 9 weiterhin das eine Ende eines aus einem faserverstärkten Kunststoff bestehenden Abrollkolbens 15 befestigt, der den Grundkörper 9 sowie den kolbenstangenseitigen Enbereich des Grundkörperfortsatzs 6, 6' umschließt und an diesem fixiert ist. Der Abrollkolben ist mehrteilig ausgebildet, wobei die Teile des Abrollkolbens 15 in Längserstreckungsrichtung der Kolbenstange 5 voneinander getrennt sind, aber in der dargestellten Betriebsposition den Grundkörper 9 und den Grundkörperfortsatz 6, 6' völlig umschließen. On the side facing away from the rolling bellows 14, one end of a rolling-resistant piston 15 made of a fiber-reinforced plastic is fastened to the radially circumferential region of the main body 9, which surrounds the base body 9 and the piston rod side region of the main body extension 6, 6 'and is fixed thereto , The rolling piston is designed in several parts, wherein the parts of the rolling piston 15 in the longitudinal direction of the piston rod 5 are separated from each other, but in the illustrated operating position the base body 9 and the main body extension 6, 6 'completely enclose.
Zur axialen Fixierung des Abrollkolbens 15 weist der Grundkörperfortsatz 6, 6' radial nach außen ragende Fixieransätze 16 auf, die in entsprechende radial nach innen gerichtete Fixieröffnungen 17 des Abrollkolbens 15 einsetzbar sind. An der äußeren Mantelfläche des Abrollkolbens 15 ist eine radial umlaufende Nut 18 ausgebildet, in der ein radial nach innen vorgespannter elastischer Ring 19 angeordnet ist, der die Teile des Abrollkolbens 15 radial nach innen in Anlage an der Außenkontur von Grundkörper 9 und Grundkörperfortsatz spannt und fixiert. For the axial fixation of the rolling piston 15, the main body extension 6, 6 'has radially outwardly projecting fixing lugs 16, which can be inserted into corresponding radially inwardly directed fixing openings 17 of the rolling piston 15. On the outer circumferential surface of the rolling piston 15, a radially circumferential groove 18 is formed, in which a radially inwardly biased elastic ring 19 is arranged, which biases and fixes the parts of the rolling piston 15 radially inwardly into contact with the outer contour of the base body 9 and main body extension ,
An dem Speicherteil 10 ist ein topfartiges Gehäuseteil 22 angeordnet, das mit seinem Mündungsbereich seiner Topföffnung durch einen Dichtring 23 abgedichtet das Speicherteil 10 umschließt. Dabei ist im Mündungsbereich der Topföffnung das aus einem Metallblech bestehende Gehäuseteil 22 durch radial umlaufendes Einrollen in eine radial umlaufende Ringnut 24 am Speicherteil 10 befestigt. On the storage part 10, a pot-like housing part 22 is arranged, which encloses with its mouth region of its pot opening sealed by a sealing ring 23, the storage part 10. In this case, in the mouth region of the pot opening, the housing part 22 consisting of a metal sheet is fastened by radial circumferential curling into a radially encircling annular groove 24 on the storage part 10.
Durch das Gehäuseteil 22 ist ein das untere Ende des Speicherteils 10 Through the housing part 22 is a the lower end of the storage part 10th
umschließender Raum gebildet. enclosed space.
Das untere Ende des Speicherteils 10 ist in der rechten Hälfte und der linken Hälfte unterschiedlich ausgebildet. The lower end of the memory part 10 is formed differently in the right half and the left half.
Die rechte Hälfte in Figur 1 und die linke Hälfte in Figur 2 zeigen einen im Innenraum des Zylinders 1 verschiebbaren Trennkolben 25. In dieser Ausbildung ist der Raum ein mit einem unter Druck stehenden Gas gefüllter Gasraum 26. The right half in Figure 1 and the left half in Figure 2 show a displaceable in the interior of the cylinder 1 separating piston 25. In this embodiment, the space is filled with a gas under pressure gas space 26th
Dabei ist zur Beaufschlagung mit einem gewünschten Gasdruck ein This is to act on a desired gas pressure
Gaszufuhranschluss 29 über eine erste Leitung 31 mit dem Gasraum 26 sowie über eine zweite Leitung 32, die auch durch den Grundkörper 9 führt, mit dem Innenraum des Rollbalgs 14 verbindbar. Auf der linken Hälfte in Figur 1 und der rechten Hälfte in Figur 2 ist der Innenraum des Zylinders 1 durch einen Verschluss 27 verschlossen, in dem ein vorgespanntes Auslassventil 28 und ein nicht dargestelltes vorgespanntes Einlassventil angeordnet sind. In dieser Ausbildung ist der Raum ein zum Teil mit einem hydraulischen Fluid gefüllter Ausgleichsraum 30. Bei einer Einschubbewegung kann hydraulisches Fluid aus der ersten Arbeitskammer 3 über das Auslassventil 28 in den Ausgleichsraum 30 strömen. Bei einer Ausfahrbewegung strömt hydraulisches Fluid von dem Gas supply port 29 via a first line 31 to the gas space 26 and via a second line 32, which also leads through the base body 9, with the interior of the rolling bellows 14 connectable. On the left half in Figure 1 and the right half in Figure 2, the interior of the cylinder 1 is closed by a closure 27 in which a biased outlet valve 28 and a biased inlet valve, not shown, are arranged. In this embodiment, the space is a compensating space 30 partially filled with a hydraulic fluid. In an insertion movement, hydraulic fluid can flow out of the first working chamber 3 via the outlet valve 28 into the equalizing space 30. In an extension movement, hydraulic fluid flows from the
Ausgleichsraum 30 über das Einlassventil in die erste Arbeitskammer 3. Compensation space 30 via the inlet valve in the first working chamber. 3
Bezuaszeichen Zylinder Bezuaszeichen cylinder
Kolben piston
erste Arbeitskammer first working chamber
zweite Arbeitskammer second working chamber
Kolbenstange piston rod
Grundkörperfortsatz Body extension
Grundkörperfortsatz Body extension
Zylinderrohr cylinder tube
Mittelteil midsection
Grundkörper body
Speicherteil memory part
Führungsöffnung guide opening
Dichtung poetry
Deckel cover
Rollbalg bellows
Abrollkolben roll-off
Fixieransätze fixing extensions
Fixieröffnungen fixing openings
Nut groove
Ring ring
Durchgangsöffnungen Through openings
Rückschlagventile check valves
Gehäuseteil housing part
Dichtring seal
Ringnut ring groove
Trennkolben separating piston
Gasraum headspace
Verschluss shutter
Auslassventil outlet valve
Gaszuführanschluss gas supply port
Ausgleichsraum erste Leitung zweite Leitung compensation space first line second line
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016224463.9A DE102016224463A1 (en) | 2016-12-08 | 2016-12-08 | Air suspension module with a shock absorber |
| DE102016224463.9 | 2016-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018103983A1 true WO2018103983A1 (en) | 2018-06-14 |
Family
ID=60515316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2017/078560 Ceased WO2018103983A1 (en) | 2016-12-08 | 2017-11-08 | Air spring module having a shock absorber |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102016224463A1 (en) |
| WO (1) | WO2018103983A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115539550A (en) * | 2022-09-08 | 2022-12-30 | 株洲时代新材料科技股份有限公司 | Device for controlling opening and closing of flow channel by air pressure of air spring rubber air bag |
| CN115539550B (en) * | 2022-09-08 | 2026-02-03 | 株洲时代新材料科技股份有限公司 | Device for controlling flow passage to be opened and closed by air pressure of air spring rubber air bag |
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| WO1983002139A1 (en) * | 1981-12-18 | 1983-06-23 | Applied Power Inc | Shock absorber and air spring assembly |
| US5518225A (en) * | 1993-11-03 | 1996-05-21 | Fichtel & Sachs Ag | Pneumatic spring-vibration damper assembly |
| US5649692A (en) * | 1994-03-18 | 1997-07-22 | Fichtel & Sachs Ag | Vibration damper and pneumatic suspension system |
| US20020113463A1 (en) * | 2001-02-17 | 2002-08-22 | Zf Sachs Ag | Driver's cab suspension |
| DE20219883U1 (en) * | 2002-12-21 | 2003-03-06 | ZF Sachs AG, 97424 Schweinfurt | Pneumatic spring for vehicle has control element with support face formed as spring plate for second spring which with maximum retracted position of control element is supported on end face of roll tube |
| FR2948608A1 (en) * | 2009-07-30 | 2011-02-04 | Wabco France | Air suspension for suspension of driver's cab of lorry relative to chassis, has seal housed in opening of suspension body between shoulder of suspension body and elastic ring, where ring is placed opposite to radial edges of suspension body |
| DE102009039841A1 (en) * | 2009-09-03 | 2011-03-10 | Thyssenkrupp Bilstein Suspension Gmbh | Spring damper element for a cab suspension |
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| US20150191066A1 (en) * | 2012-09-21 | 2015-07-09 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Seal arrangement for an air spring system |
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| DE1152316B (en) * | 1961-05-06 | 1963-08-01 | Continental Gummi Werke Ag | Air suspension, in particular for motor vehicles |
| DE2538805C2 (en) * | 1974-08-30 | 1982-11-04 | Monroe Auto Equipment Co. (n.d.Ges.d.Staates Delaware), Monroe, Mich. | Suspension strut with a telescopic shock absorber |
| DE4429992C2 (en) * | 1993-11-03 | 1996-11-28 | Fichtel & Sachs Ag | Air spring |
| JP3753196B2 (en) * | 1996-04-09 | 2006-03-08 | カヤバ工業株式会社 | Rod guide molding method |
| DE19802703A1 (en) * | 1998-01-24 | 1999-07-29 | Bayerische Motoren Werke Ag | Air spring with a bellows |
| US7070028B2 (en) * | 2001-02-07 | 2006-07-04 | Tenneco Automotive Operating Company Inc. | Frequency dependent damper |
| US6443436B1 (en) * | 2001-05-29 | 2002-09-03 | Tenneco Automotive Inc. | Air spring assembly on shock absorber with combined seal |
| DE102012003302B4 (en) * | 2012-02-18 | 2017-01-26 | Audi Ag | Device for adjusting the spring rate of a gas spring |
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2016
- 2016-12-08 DE DE102016224463.9A patent/DE102016224463A1/en not_active Ceased
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2017
- 2017-11-08 WO PCT/EP2017/078560 patent/WO2018103983A1/en not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983002139A1 (en) * | 1981-12-18 | 1983-06-23 | Applied Power Inc | Shock absorber and air spring assembly |
| US5518225A (en) * | 1993-11-03 | 1996-05-21 | Fichtel & Sachs Ag | Pneumatic spring-vibration damper assembly |
| US5649692A (en) * | 1994-03-18 | 1997-07-22 | Fichtel & Sachs Ag | Vibration damper and pneumatic suspension system |
| US20020113463A1 (en) * | 2001-02-17 | 2002-08-22 | Zf Sachs Ag | Driver's cab suspension |
| DE20219883U1 (en) * | 2002-12-21 | 2003-03-06 | ZF Sachs AG, 97424 Schweinfurt | Pneumatic spring for vehicle has control element with support face formed as spring plate for second spring which with maximum retracted position of control element is supported on end face of roll tube |
| FR2948608A1 (en) * | 2009-07-30 | 2011-02-04 | Wabco France | Air suspension for suspension of driver's cab of lorry relative to chassis, has seal housed in opening of suspension body between shoulder of suspension body and elastic ring, where ring is placed opposite to radial edges of suspension body |
| DE102009039841A1 (en) * | 2009-09-03 | 2011-03-10 | Thyssenkrupp Bilstein Suspension Gmbh | Spring damper element for a cab suspension |
| DE102011082906A1 (en) * | 2011-09-19 | 2013-03-21 | Zf Friedrichshafen Ag | Vibration damper for suspension strut of motor vehicle, has supporting ring which is formed with radially directed flange |
| US20150191066A1 (en) * | 2012-09-21 | 2015-07-09 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Seal arrangement for an air spring system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115539550A (en) * | 2022-09-08 | 2022-12-30 | 株洲时代新材料科技股份有限公司 | Device for controlling opening and closing of flow channel by air pressure of air spring rubber air bag |
| CN115539550B (en) * | 2022-09-08 | 2026-02-03 | 株洲时代新材料科技股份有限公司 | Device for controlling flow passage to be opened and closed by air pressure of air spring rubber air bag |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016224463A1 (en) | 2018-06-14 |
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