DE4230249A1 - Bellows-type air spring for vehicle - has bent projections around edge of sealing seat between bellows - Google Patents

Bellows-type air spring for vehicle - has bent projections around edge of sealing seat between bellows

Info

Publication number
DE4230249A1
DE4230249A1 DE19924230249 DE4230249A DE4230249A1 DE 4230249 A1 DE4230249 A1 DE 4230249A1 DE 19924230249 DE19924230249 DE 19924230249 DE 4230249 A DE4230249 A DE 4230249A DE 4230249 A1 DE4230249 A1 DE 4230249A1
Authority
DE
Germany
Prior art keywords
bellows
air spring
sealing seat
projections
rolling piston
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
Application number
DE19924230249
Other languages
German (de)
Other versions
DE4230249C2 (en
Inventor
Hans-Joachim Dipl Ing Pahl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental AG
Original Assignee
Continental AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental AG filed Critical Continental AG
Priority to DE19924230249 priority Critical patent/DE4230249C2/en
Publication of DE4230249A1 publication Critical patent/DE4230249A1/en
Application granted granted Critical
Publication of DE4230249C2 publication Critical patent/DE4230249C2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • 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
    • F16F9/049—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 multi-chamber units
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/126—Mounting of pneumatic springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/45—Stops limiting travel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/45—Stops limiting travel
    • B60G2204/4502—Stops limiting travel using resilient buffer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/424—Plunger or top retainer construction for bellows or rolling lobe type air springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs

Abstract

Air spring in which segment-like projections (31) are arranged on the edge of the sealing seat (22) directed towards the bellows interior. The projections are made of a material which can be bent over at right angles such that after the assembly of the sealing bead (21) the projections are bent outwardly around it. The roll-up piston (23) consists of a sheet cover and a closed floor (26) such that the cover is drawn in around the bead by the formation of a central opening (25). USE/ADVANTAGE - Bellows-type air spring for vehicle provides an additional usable volume of air and also makes possible a simple and secure fastening for the rolling bellows.

Description

Die Erfindung betrifft eine Luftfeder für Fahrzeuge mit einem elastomeren Rollbalg, der an einem Ende einen konischen Dichtwulst aufweist, der auf einem konischen Dichtsitz eines Abrollkolbens angeordnet ist und sich im Betrieb der Luftfeder auf der Mantelwandung des Abrollkolbens mit seiner Rollfalte abstützt.The invention relates to an air spring for vehicles with an elastomeric bellows, one at one end has conical sealing bead on a conical Sealing seat of a rolling piston is arranged and in Operation of the air spring on the jacket wall of the Support the rolling piston with its roll fold.

Luftfedern mit einem elastomeren Rollbalg haben sich als Fahrzeugfederungen, insbesondere zur Abfederung der Radachsen von Lastkraftwagen und Autobussen, in großem Umfang bewährt. Die Rollbälge sind dabei mit einem Ende an einem Abrollkolben befestigt, der gewöhnlich aus Metall oder Kunststoff gefertigt ist. Im Betriebszustand bewegt sich der Abrollkolben innerhalb des Rollbalges, der sich umstülpt und eine Rollfalte bildet, die über den Außenmantel des Abrollkolbens abrollt.Air springs with an elastomeric bellows have proven to be Vehicle suspensions, especially for cushioning the Large axles of trucks and buses Proven scope. The bellows are at one end attached to a rolling piston, usually made of metal or plastic is made. Moved in the operating state the rolling piston within the bellows, which is inside out and forms a roll fold over the The outer jacket of the rolling piston rolls off.

Um einen dichten Sitz der Enden des Rollbalges an dem Abrollkolben und an dem gegenüberliegenden anderen Befestigungsteil zu erreichen, sind verschiedene abdichtende Anschlußarten bekannt. Der Abrollkolben weist bei einer Anschlußart einen kreisförmigen konischen Dichtsitz auf, auf dem das offene Ende des Rollbalges mit einem entsprechenden konischen Dichtwulst sitzt. Der konische Dichtwulst wird durch den Balginnendruck auf den konischen Dichtsitz des Abrollkolbens gepreßt.To ensure a tight fit of the ends of the bellows on the Rolling piston and on the opposite other To reach the fastener are different sealing connection types known. The rolling piston has a circular conical connection Seal seat on which the open end of the bellows with a corresponding conical sealing bead sits. Of the conical sealing bead is caused by the pressure inside the bellows conical sealing seat of the rolling piston pressed.

Um das Gesamtluftvolumen einer Luftfeder zu erhöhen, ist es an sich bekannt, das Volumen des Abrollkolbens als Zusatzvolumen zu nutzen. To increase the total air volume of an air spring is it is known as the volume of the rolling piston To use additional volume.  

Zur Sicherung gegen Abziehen des konischen Dichtwulstes von dem Dichtsitz des Abrollkolbens ist es bekannt, das Balgende über einen auf den Abrollkolben aufschraubbaren Spannteller zu fixieren. Dieser Spannteller stellt aber ein zusätzliches Bauteil dar und behindert die Nutzung des Abrollkolbens als Zusatzvolumen.To prevent the conical sealing bead from being pulled off from the sealing seat of the rolling piston it is known that Bellows over a screwable on the rolling piston Fix the clamping plate. However, this clamping plate provides is an additional component and hinders the use of the Roll-off piston as additional volume.

Aus der DE-B-12 85 792 ist eine Balgbefestigung bekannt, bei der der konische Dichtsitz des Abrollkolbens von einer Befestigungsscheibe begrenzt ist. Dadurch ist der konische Dichtwulst gegen Abrutschen von dem konischen Dichtsitz gesichert. Die Befestigungsscheibe ist durch eine separate Verschraubung nach Aufpressen des konischen Dichtwulstes auf den Dichtsitz angebracht worden. Diese Anordnung ist technisch aufwendig und erfordert Platz für die Verschraubung.A bellows attachment is known from DE-B-12 85 792, in which the conical sealing seat of the rolling piston by one Mounting disc is limited. This makes the conical Sealing bead against slipping off the conical sealing seat secured. The mounting washer is separate Screw connection after pressing on the conical sealing bead been attached to the sealing seat. This arrangement is technically complex and requires space for the Screw connection.

Der Erfindung liegt die Aufgabe zugrunde, eine Luftfeder der eingangs genannten Art mit einem Abrollkolben zu versehen, der einerseits als Luftzusatzvolumen nutzbar und andererseits eine vereinfachte und sichere Befestigung des Rollbalges ermöglicht.The invention has for its object an air spring of the type mentioned at the beginning with a rolling piston provided that can be used on the one hand as an additional air volume and on the other hand, a simplified and secure attachment of the Roll bellows enabled.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß am ins Balginnere gerichteten Rand des Dichtsitzes segmentartige Vorsprünge angeordnet sind, die aus einem kröpfbaren Werkstoff bestehen, und daß die Vorsprünge nach der Montage des Dichtwulstes um diesen nach außen gekröpft sind.The object is achieved in that on edge of the sealing seat facing the inside of the bellows segment-like projections are arranged, which consist of a crankable material and that the projections after the assembly of the sealing bead cranked around this to the outside are.

Durch die Erfindung wird eine nachträgliche Sicherung des Abrollkolbens gegen Herausziehen aus der Balgöffnung möglich. Dazu werden die hervorstehenden Segmente nach Aufsetzen des konischen Dichtwulstes mit einem geeigneten Werkzeug umgekröpft. Anschließend kann die Befestigung des anderen Endes des Rollbalges an einem Befestigungsteil, das an den Fahrzeugrahmen stationär angebracht wird, vorgenommen werden.The invention is a subsequent backup of the Roll-off piston against being pulled out of the bellows opening possible. The protruding segments are Attach the conical sealing bead with a suitable one  Tool turned over. Then the attachment of the other end of the bellows on a fastening part, which is fixed to the vehicle frame, be made.

Eine vorteilhafte Ausgestaltung der Erfindung wird im Kennzeichen des Anspruchs 2 offenbart. Wird der Abrollkolben im wesentlichen aus einem Blechmantel hergestellt, so können der Dichtsitz und die sich daran anschließenden segmentartigen Vorsprünge aus dem Blech mitgeformt bzw. mitausgestanzt werden. Weiter ist dadurch auch der als Zusatzluftvolumen gewünschte Hohlraum des Abrollkolbens einfach herstellbar.An advantageous embodiment of the invention is in Characteristics of claim 2 disclosed. Will the Roll-off piston essentially from a sheet metal jacket manufactured, so the sealing seat and it can subsequent segment-like projections from the sheet be shaped or punched out. This is further also the desired cavity of the additional air volume Rolling piston easy to manufacture.

Anhand der Zeichnungen wird nachstehend ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigtBased on the drawings, a Embodiment of the invention explained in more detail. It shows

Fig. 1 eine zusammengebaute Luftfeder mit einem zum Federinnenraum offenen Abrollkolben, Fig. 1 is an assembled air spring having an open to the spring interior roll-off piston,

Fig. 2 eine geschnittene Draufsicht auf den Abrollkolben gemäß Linie II-II in Fig. 1. Fig. 2 is a sectional plan view of the rolling piston according to line II-II in FIG. 1.

Die gezeigte Luftfeder weist einen elastomeren Rollbalg 11 auf, dessen oberer Dichtwulst 12 an einer Bördelplatte 13 befestigt ist. Die Bördelplatte 13 ist über eine Konsole 14 an einem Fahrzeugrahmen anschraubbar. Die Bördelplatte 13 weist einen Luftanschluß 16 auf und trägt einen in das Federinnere ragenden, zentrisch angeordneten Gummipuffer 18.The air spring shown has an elastomeric bellows 11 , the upper sealing bead 12 of which is attached to a flange plate 13 . The flange plate 13 can be screwed onto a vehicle frame via a bracket 14 . The flange plate 13 has an air connection 16 and carries a rubber buffer 18 which projects into the spring interior and is arranged centrally.

Der Rollbalg 11 ist mit seiner unteren Balgöffnung, die von einem konischen Dichtwulst 21 begrenzt wird, auf einem konischen Dichtsitz 22 eines Abrollkolbens 23, der aus einem Blechmantel gebildet ist, befestigt. Der konische Dichtsitz 22 ist im Durchmesser kleiner als der Abrollkolben 23 und liegt auf der oberen Stirnseite 24. Der Kreisraum 25, der durch den konischen Dichtsitz 22 begrenzt wird, ist frei. Dadurch steht das Volumen des Abrollkolbens 23 in direkter Verbindung mit dem Federvolumen des Rollbalges 11.The bellows 11 is fixed with its lower bellows opening, which is delimited by a conical sealing bead 21 , on a conical sealing seat 22 of a rolling piston 23 , which is formed from a sheet metal jacket. The conical sealing seat 22 is smaller in diameter than the rolling piston 23 and lies on the upper end face 24 . The circular space 25 , which is delimited by the conical sealing seat 22 , is free. As a result, the volume of the rolling piston 23 is in direct connection with the spring volume of the rolling bellows 11 .

Auf den Boden 26 des Abrollkolbens 23 ist in diesem eine zentrische Stütze 27 fest angebracht, auf die beim Luftleerwerden oder starken Einfedern des Rollbalges 11 der elastische Puffer 18 auftrifft.A central support 27 is fixedly attached to the bottom 26 of the rolling piston 23 , on which the elastic buffer 18 strikes when the bellows 11 becomes deflated or is strongly compressed.

Der konische Dichtsitz 22 wird von der Wand des Abrollkolbens 23 gebildet und trägt in seiner Verlängerung über den Umfang verteilt angeordnet sechs segmentartige Vorsprünge 31.The conical sealing seat 22 is formed by the wall of the rolling piston 23 and, in its extension, has six segment-like projections 31 arranged distributed over the circumference.

Die Montage einer derartigen Luftfeder geht wie folgt vonstatten: Der Rollbalg 11 wird mit seiner unteren Dichtwulst 21 auf den Dichtsitz 22 des als Luftzusatzvolumen ausgebildeten Abrollkolbens 23 gezogen. Durch die obere, noch nicht verschlossene Balgöffnung hindurch werden mit einem geeigneten Werkzeug die segmentartigen Vorsprünge 31 nach außen umgebogen. Durch diese Kröpfung der Vorsprünge 31, die auf dem oberen Rand des Dichtsitzes 22 befestigt bzw. angeformt sind, wird der Dichtwulst 21 gegen Abrutschen von dem Dichtsitz 22 gesichert. Anschließend wird der Rollbalg 11 mit seinem anderen Ende an der Bördelplatte 13 befestigt.The installation of such an air spring is carried out as follows: the rolling bellows 11 is pulled with its lower sealing bead 21 onto the sealing seat 22 of the rolling piston 23 designed as an additional air volume. The segment-like projections 31 are bent outwards through the upper, not yet closed bellows opening with a suitable tool. This offset of the projections 31 , which are fastened or formed on the upper edge of the sealing seat 22 , ensures that the sealing bead 21 is secured against slipping off the sealing seat 22 . The roller bellows 11 is then attached with its other end to the flange plate 13 .

Claims (2)

1. Luftfeder für Fahrzeuge mit einem elastomeren Rollbalg, der an einem Ende einen konischen Dichtwulst aufweist, der auf einem konischen Dichtsitz eines Abrollkolbens angeordnet ist und sich im Betrieb der Luftfeder auf der Mantelwandung des Abrollkolbens mit seiner Rollfalte abstützt, dadurch gekennzeichnete daß am ins Balginnere gerichteten Rand des Dichtsitzes (22) segmentartige Vorsprünge (31) angeordnet sind, die aus einem kröpfbaren Werkstoff bestehen, und daß die Vorsprünge (31) nach der Montage des Dichtwulstes (21) um diesen nach außen gekröpft sind.1. Air spring for vehicles with an elastomeric bellows, which has a conical sealing bead at one end, which is arranged on a conical sealing seat of a rolling piston and is supported during operation of the air spring on the outer wall of the rolling piston with its roll fold, characterized in that the ins The inner edge of the sealing seat ( 22 ) facing the bellows, segment-like projections ( 31 ) are arranged, which consist of a crankable material, and that the projections ( 31 ) are cranked around the outside after assembly of the sealing bead ( 21 ). 2. Luftfeder nach Anspruch 1, dadurch gekennzeichnet, daß der Abrollkolben (23) aus einem Blechmantel und einem geschlossenen Boden (26) besteht, wobei der Blechmantel an der Stirnseite (24) des Abrollkolbens (23) unter Bildung einer Zentralöffnung (25) eingezogen ist und an seinem Ende den konischen Dichtsitz (22) mit den segmentartigen Vorsprüngen (31) aufweist.2. Air spring according to claim 1, characterized in that the rolling piston ( 23 ) consists of a sheet metal jacket and a closed bottom ( 26 ), the sheet metal jacket on the end face ( 24 ) of the rolling piston ( 23 ) being drawn in to form a central opening ( 25 ) and has at its end the conical sealing seat ( 22 ) with the segment-like projections ( 31 ).
DE19924230249 1992-09-10 1992-09-10 Air spring for vehicles with an elastomeric bellows and a rolling piston Expired - Lifetime DE4230249C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924230249 DE4230249C2 (en) 1992-09-10 1992-09-10 Air spring for vehicles with an elastomeric bellows and a rolling piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924230249 DE4230249C2 (en) 1992-09-10 1992-09-10 Air spring for vehicles with an elastomeric bellows and a rolling piston

Publications (2)

Publication Number Publication Date
DE4230249A1 true DE4230249A1 (en) 1994-03-17
DE4230249C2 DE4230249C2 (en) 1995-11-23

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998035845A1 (en) * 1997-01-24 1998-08-20 Volvo Lastvagnar Ab A device for control of operating device
EP0914976A1 (en) * 1997-05-26 1999-05-12 Isuzu Motors Limited Suspension device for vehicles
FR2779195A1 (en) * 1998-05-28 1999-12-03 Goodyear Tire & Rubber PNEUMATIC SPRING STOPPER AND MOUNTING METHOD
WO2001061207A1 (en) * 2000-02-15 2001-08-23 Bfs Diversified Products, Llc Pedestal mounted full reservoir air spring piston
US6513798B2 (en) 1999-10-22 2003-02-04 Bfs Diversified Products, Llc Integral bracket and end mounting plate for air spring
EP1360430B1 (en) * 2001-02-07 2006-11-29 Basf Aktiengesellschaft Spring element
WO2008025517A1 (en) * 2006-08-30 2008-03-06 Lkh-Kunststoffwerk Gmbh & Co. Kg Plunger for an air spring
WO2008031785A1 (en) * 2006-09-14 2008-03-20 Contitech Luftfedersysteme Gmbh Plastic lid for commercial vehicle air springs with matched buffer
US20120200020A1 (en) * 2009-10-14 2012-08-09 Firestone Industrial Products Company, Llc End member, gas spring assembly and method
WO2012150068A1 (en) * 2011-05-04 2012-11-08 Contitech Luftfedersysteme Gmbh Rolling piston for an air spring rolling bellows
WO2018219508A1 (en) * 2017-05-31 2018-12-06 Contitech Luftfedersysteme Gmbh Air spring
WO2022089694A1 (en) 2020-10-29 2022-05-05 Contitech Luftfedersysteme Gmbh Air spring
EP3165786B1 (en) * 2015-11-03 2023-08-23 ContiTech Luftfedersysteme GmbH Air spring piston

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD746183S1 (en) 2014-07-09 2015-12-29 Firestone Industrial Products Company, Llc Gas spring end member

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124311B (en) * 1958-05-03 1962-02-22 Dunlop Rubber Co Gas spring
DE1285792B (en) * 1966-11-07 1968-12-19 Continental Gummi Werke Ag Air spring with a deformable wall and reinforced beads having bellows
DE3147231C1 (en) * 1981-11-28 1983-03-31 Bergische Achsenfabrik Fr. Kotz & Söhne, 5276 Wiehl Air spring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124311B (en) * 1958-05-03 1962-02-22 Dunlop Rubber Co Gas spring
DE1285792B (en) * 1966-11-07 1968-12-19 Continental Gummi Werke Ag Air spring with a deformable wall and reinforced beads having bellows
DE3147231C1 (en) * 1981-11-28 1983-03-31 Bergische Achsenfabrik Fr. Kotz & Söhne, 5276 Wiehl Air spring

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998035845A1 (en) * 1997-01-24 1998-08-20 Volvo Lastvagnar Ab A device for control of operating device
US6431557B1 (en) 1997-01-24 2002-08-13 Volvo Lastvagnar Ab Driving mode ride height adjustment
EP0914976A1 (en) * 1997-05-26 1999-05-12 Isuzu Motors Limited Suspension device for vehicles
EP0914976A4 (en) * 1997-05-26 1999-11-24 Isuzu Motors Ltd Suspension device for vehicles
US6290244B1 (en) 1997-05-26 2001-09-18 Isuzu Motors Limited Suspension device for vehicles
FR2779195A1 (en) * 1998-05-28 1999-12-03 Goodyear Tire & Rubber PNEUMATIC SPRING STOPPER AND MOUNTING METHOD
US6513798B2 (en) 1999-10-22 2003-02-04 Bfs Diversified Products, Llc Integral bracket and end mounting plate for air spring
WO2001061207A1 (en) * 2000-02-15 2001-08-23 Bfs Diversified Products, Llc Pedestal mounted full reservoir air spring piston
US6386524B1 (en) 2000-02-15 2002-05-14 Bfs Diversified Products, Llc Pedestal mounted full reservoir air spring piston
EP1360430B1 (en) * 2001-02-07 2006-11-29 Basf Aktiengesellschaft Spring element
WO2008025517A1 (en) * 2006-08-30 2008-03-06 Lkh-Kunststoffwerk Gmbh & Co. Kg Plunger for an air spring
WO2008031785A1 (en) * 2006-09-14 2008-03-20 Contitech Luftfedersysteme Gmbh Plastic lid for commercial vehicle air springs with matched buffer
US8302945B2 (en) 2006-09-14 2012-11-06 Contitech Luftfedersysteme Gmbh Cover assembly for a vehicle air spring
US20120200020A1 (en) * 2009-10-14 2012-08-09 Firestone Industrial Products Company, Llc End member, gas spring assembly and method
US8864113B2 (en) 2009-10-14 2014-10-21 Firestone Industrial Products Company, Llc End member, gas spring assembly and method
US9371881B2 (en) 2009-10-14 2016-06-21 Firestone Industrial Products Company, Llc End member, gas spring assembly and method
WO2012150068A1 (en) * 2011-05-04 2012-11-08 Contitech Luftfedersysteme Gmbh Rolling piston for an air spring rolling bellows
US9334916B2 (en) 2011-05-04 2016-05-10 Contitech Luftfedersysteme Gmbh Roll-off piston for an air spring rolling-lobe flexible member
EP3165786B1 (en) * 2015-11-03 2023-08-23 ContiTech Luftfedersysteme GmbH Air spring piston
WO2018219508A1 (en) * 2017-05-31 2018-12-06 Contitech Luftfedersysteme Gmbh Air spring
US11255397B2 (en) 2017-05-31 2022-02-22 Contitech Luftfedersysteme Gmbh Air spring
WO2022089694A1 (en) 2020-10-29 2022-05-05 Contitech Luftfedersysteme Gmbh Air spring
DE102020213658A1 (en) 2020-10-29 2022-05-05 Contitech Luftfedersysteme Gmbh air spring

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