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DE19704433C2 - Air spring with a variable air chamber delimited by a roller bellows for cushioning the wheels of motor vehicles - Google Patents

Air spring with a variable air chamber delimited by a roller bellows for cushioning the wheels of motor vehicles

Info

Publication number
DE19704433C2
DE19704433C2 DE1997104433 DE19704433A DE19704433C2 DE 19704433 C2 DE19704433 C2 DE 19704433C2 DE 1997104433 DE1997104433 DE 1997104433 DE 19704433 A DE19704433 A DE 19704433A DE 19704433 C2 DE19704433 C2 DE 19704433C2
Authority
DE
Germany
Prior art keywords
components
air spring
wheels
cushioning
air chamber
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.)
Revoked
Application number
DE1997104433
Other languages
German (de)
Other versions
DE19704433A1 (en
Inventor
Peter Goennheimer
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE1997104433 priority Critical patent/DE19704433C2/en
Publication of DE19704433A1 publication Critical patent/DE19704433A1/en
Application granted granted Critical
Publication of DE19704433C2 publication Critical patent/DE19704433C2/en
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/314—The spring being a 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
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/416—Ball or spherical joints

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Description

Die Erfindung betrifft eine Luftfeder nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an air spring according to the preamble of Claim 1.

Eine solche Luftfeder ist aus WO 95/09092 A1 bekannt. Bei jener Federeinrichtung kommt es bei horizontalen Verschiebungen zwi­ schen der Karosserie und dem gegenüber dieser gefederten Rad­ führungselement wegen einer festen Verbindung des Federbalges mit der Karosserie zu exzentrischen Verformungen des Federbal­ ges. Dies beeinträchtigt einerseits ein von der Betriebslage des Fahrzeuges unabhängiges, gleichwirkendes Federverhalten und verschlechtert andererseits wegen Materialverzwängungen bei der Federbalgverformung die Haltbarkeit des Federbalges.Such an air spring is known from WO 95/09092 A1. With that Spring device occurs between horizontal displacements the body and the sprung wheel against it guide element because of a firm connection of the bellows with the body to eccentric deformation of the bellows total On the one hand, this affects the operating situation independent, equivalent spring behavior and deteriorates on the other hand due to material crowding in the Bellows deformation the durability of the bellows.

Hier eine Verbesserung zu schaffen, ist das technische Problem, mit dem sich die Erfindung beschäftigt und das sie bei einer gattungsgemäßen Luftfeder mit den kennzeichnenden Merkmalen des Patentanspruchs 1 löst. Die bei der erfindungsgemäßen Einrich­ tung vorliegende Zwangsführung des Federbalges wird vorteilhaf­ terweise durch eine Führungszylinder-Schubstangen-Einrichtung nach Anspruch 2 erreicht. To make an improvement here is the technical problem with which the invention is concerned and that it at a Generic air spring with the characteristic features of the Claim 1 solves. The in the Einrich invention tion present guidance of the bellows is advantageous tally by a guide cylinder push rod device reached according to claim 2.  

Durch die erfindungsgemäße Anlenkung der Luftfeder mit deren zwangsgeführt gegeneinander bewegbaren Bauteilen ist bei belie­ bigen Relativbewegungen zwischen den beiden Kugelgelenken stets eine zentrische kippfreie Bewegung der Federbauteile, die die variable Luftkammer unter Zwischenschaltung eines Rollbalges bilden, gewährleistet.Due to the articulation of the air spring according to the invention components that can be moved against each other is at belie always relative movements between the two ball joints a centric tilt-free movement of the spring components, which the variable air chamber with the interposition of a rolling bellows form, guaranteed.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dar­ gestellt.An embodiment of the invention is shown in the drawing posed.

Diese zeigt eine Luftfeder für die Abfederung der Räder eines Kraftfahrzeuges im Längsschnitt.This shows an air spring for the suspension of the wheels Motor vehicle in longitudinal section.

Die Luftfeder besteht aus zwei gegeneinander bewegbaren Bautei­ len, nämlich einem Kolben als erstem Bauteil 1 und einem Zylin­ der als zweitem Bauteil 2. Ein die beiden vorgenannten Bauteile 1, 2 miteinander dicht verbindender Rollbalg 3 läßt zwischen diesen Bauteilen eine volumenvariable Luftkammer 4 entstehen. Diese Luftkammer 4 kann über einen Kanal 15 mit einem Zusatz­ luftvolumen zur Komfortsteigerung der Luftfeder in an sich be­ kannter Weise verbindbar sein.The air spring consists of two mutually movable components, namely a piston as the first component 1 and a cylinder as the second component 2 . A bellows 3 sealingly connecting the two aforementioned components 1 , 2 to one another allows a volume-variable air chamber 4 to be formed between these components. This air chamber 4 can be connected via a channel 15 with an additional air volume to increase the comfort of the air spring in a manner known per se.

Die Luftfeder ist über je ein Kugelgelenk 5 und 6 mit einer­ seits einem Führungselement der Räder eines Kraftfahrzeuges und andererseits mit der Karosserie des betreffenden Fahrzeuges verbunden. The air spring is connected via a ball joint 5 and 6 to one side of a guide element of the wheels of a motor vehicle and on the other hand to the body of the vehicle in question.

Von dem Kugelgelenk 5 ist die Kugel 7 fest mit dem ersten Bauteil 1 der Luftfeder verbunden. Von dem zweiten Kugelge­ lenk 6 ist die Kugel 8 fest mit dem zweiten Bauteil 2 verbun­ den.From the ball joint 5 , the ball 7 is firmly connected to the first component 1 of the air spring. From the second Kugelge steering 6 , the ball 8 is firmly connected to the second component 2 .

Zentrisch innerhalb der Luftfeder befindet sich eine Füh­ rungszylinder-Schubstangen-Einrichtung 9 zur Zwangsführung der beiden Bauteile 1 und 2, wodurch diese beiden Bauteile sich definiert auf einer gemeinsamen durch die beiden Kugel­ gelenke 5 und 6 verlaufenden Geraden ausschließlich gegenein­ ander bewegen können.Centrally within the air spring is a Füh approximately cylinder push rod device 9 for positive guidance of the two components 1 and 2 , whereby these two components defined on a common through the two ball joints 5 and 6 straight lines can move against each other only.

Im einzelnen besteht die Führungzylinder-Schubstangen- Einrichtung 9 aus einer mit der Kugel 7 des Kugelgelenkes 5 verbundenen Schubstange 10 und einem mit der Kugel 8 des zweiten Kugelgelenkes 6 fest verbundenen Führungszylinder 11.In detail, the guide cylinder push rod device 9 consists of a push rod 10 connected to the ball 7 of the ball joint 5 and a guide cylinder 11 firmly connected to the ball 8 of the second ball joint 6 .

In denjenigen Bereichen des Führungszylinders 11 bzw. der Schubstange 10, die gegeneinander gleiten, sind reibungsmin­ dernde Gleitkörper 12 vorgesehen.In those areas of the guide cylinder 11 or the push rod 10 which slide against each other, friction-reducing sliding bodies 12 are provided.

In dem gezeichneten Ausführungsbeispiel ist das Kugelgelenk 6 mit der Karosserie und das Kugelgelenk 5 mit einem Führungse­ lement eines Rades eines Kraftfahrzeuges fest verbunden, wo­ bei die feste Verbindung jeweils über die Kugelpfannen 13 und 14 der beiden Kugelgelenke 5 und 6 erfolgt.In the illustrated embodiment, the ball joint 6 is firmly connected to the body and the ball joint 5 with a guide element of a wheel of a motor vehicle, where the fixed connection takes place via the ball sockets 13 and 14 of the two ball joints 5 and 6 , respectively.

Claims (2)

1. Luftfeder mit einer variablen, zwischen einem beweglichen ersten Bauteil und einem feststehenden zweiten Bauteil durch einen Rollbalg begrenzten volumenvariablen Luftkammer für die Abfederung von Rädern eines Kraftfahrzeuges, bei der eines der beiden Bauteile mit der Karosserie, das jeweils andere Bauteil mit einem Führungselement eines Rades verbunden ist, und bei der ferner beide Bauteile zentrisch zwangsgeführt gegeneinander verschiebbar sind, dadurch gekennzeichnet, daß beide Bauteile (1, 2) über jeweils ein Kugelgelenk (5, 6) an die Karosserie bzw. an das Rad-Führungselement angelenkt sind.1. Air spring with a variable, between a movable first component and a fixed second component by a bellows limited volume variable air chamber for cushioning the wheels of a motor vehicle, in which one of the two components with the body, the other component with a guide element of a wheel is connected, and in which both components can also be displaced centrically against one another, characterized in that both components ( 1 , 2 ) are articulated via a ball joint ( 5 , 6 ) to the body or to the wheel guiding element. 2. Luftfeder nach Anspruch 1, dadurch gekennzeichnet, daß die zentrische Zwangsführung der beiden gegeneinander be­ weglichen Bauteile (1, 2) der Luftfeder durch eine Führungszy­ linder-Schubstangen-Einrichtung (9) gebildet ist, von der der Führungszylinder (11) mit dem einen der beiden Bauteile (1 bzw. 2) und die Schubstange (10) mit dem jeweils anderen dieser bei­ den Bauteile (1, 2) fest verbunden ist.2. Air spring according to claim 1, characterized in that the central positive guidance of the two mutually movable components ( 1 , 2 ) of the air spring is formed by a guide cylinder push rod device ( 9 ), of which the guide cylinder ( 11 ) with the one of the two components ( 1 or 2 ) and the push rod ( 10 ) is firmly connected to the other one of the components ( 1 , 2 ).
DE1997104433 1997-02-06 1997-02-06 Air spring with a variable air chamber delimited by a roller bellows for cushioning the wheels of motor vehicles Revoked DE19704433C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997104433 DE19704433C2 (en) 1997-02-06 1997-02-06 Air spring with a variable air chamber delimited by a roller bellows for cushioning the wheels of motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997104433 DE19704433C2 (en) 1997-02-06 1997-02-06 Air spring with a variable air chamber delimited by a roller bellows for cushioning the wheels of motor vehicles

Publications (2)

Publication Number Publication Date
DE19704433A1 DE19704433A1 (en) 1998-08-13
DE19704433C2 true DE19704433C2 (en) 2001-06-13

Family

ID=7819440

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997104433 Revoked DE19704433C2 (en) 1997-02-06 1997-02-06 Air spring with a variable air chamber delimited by a roller bellows for cushioning the wheels of motor vehicles

Country Status (1)

Country Link
DE (1) DE19704433C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304613A1 (en) * 2003-02-05 2004-08-19 Continental Aktiengesellschaft Rolling bellows pneumatic spring with joint for vehicle has cylindrical bearing between piston and vehicle part or between cover plate and vehicle part with its axis transverse to that of piston
DE102004048828A1 (en) * 2004-10-07 2006-04-20 Zf Friedrichshafen Ag Air spring with a ball joint
DE102005060332B3 (en) * 2005-12-16 2007-02-15 Zf Friedrichshafen Ag Pneumatic spring leg e.g. for spring, has pneumatic spring with moving bellows which are connected to end of bearing

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188000B1 (en) 1998-12-03 2005-02-09 Vibracoustic GmbH & Co. KG Pneumatic suspension system
DE19961719A1 (en) * 1999-12-21 2001-07-05 Daimler Chrysler Ag Spring damper system with hose bellows
US6402128B1 (en) * 2000-01-31 2002-06-11 The Goodyear Tire And Rubber Company Air spring with lateral restraint and axial control
ITTO20010547A1 (en) * 2001-06-06 2002-12-06 N C M S R L PNEUMATIC SUSPENSION WITH COMPENSATION OF DIFFERENCES AND LOAD TRANSFERS.
DE10249741A1 (en) 2002-10-25 2004-05-06 Continental Aktiengesellschaft Bellows air spring with support bell
DE102008034834B4 (en) 2008-07-24 2018-02-15 Vibracoustic Gmbh Air spring and strut
WO2014179581A1 (en) * 2013-05-01 2014-11-06 Firestone Industrial Products Company, Llc Gas spring assemblies and internal misalignment mounts for same
DE102021106716A1 (en) 2021-03-18 2022-09-22 Rheinmetall Invent GmbH Leaf spring device, chassis and vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1755810B2 (en) * 1967-06-22 1976-07-01 Moulton Developments Ltd., Bradfordon-Avon, Wiltshire (Grossbritannien) CHASSIS FOR MULTI-AXLE COMMERCIAL VEHICLES WITH TORSION-RESISTANT VEHICLE FRAME, SINGLE-WHEEL SUSPENSION AND HYDRAULIC WHEEL PRESSURE COMPENSATION
DE4018712A1 (en) * 1990-06-12 1991-12-19 Bosch Gmbh Robert Air spring with variable stiffness for motor vehicle - has rigid-walled auxiliary air chamber surrounding main air chamber adjusted by level of liq. filling
WO1995009092A1 (en) * 1993-09-27 1995-04-06 Ikarus Jármügyártó Rt Suspension for motor vehicles, mainly for low-floor buses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1755810B2 (en) * 1967-06-22 1976-07-01 Moulton Developments Ltd., Bradfordon-Avon, Wiltshire (Grossbritannien) CHASSIS FOR MULTI-AXLE COMMERCIAL VEHICLES WITH TORSION-RESISTANT VEHICLE FRAME, SINGLE-WHEEL SUSPENSION AND HYDRAULIC WHEEL PRESSURE COMPENSATION
DE4018712A1 (en) * 1990-06-12 1991-12-19 Bosch Gmbh Robert Air spring with variable stiffness for motor vehicle - has rigid-walled auxiliary air chamber surrounding main air chamber adjusted by level of liq. filling
WO1995009092A1 (en) * 1993-09-27 1995-04-06 Ikarus Jármügyártó Rt Suspension for motor vehicles, mainly for low-floor buses

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304613A1 (en) * 2003-02-05 2004-08-19 Continental Aktiengesellschaft Rolling bellows pneumatic spring with joint for vehicle has cylindrical bearing between piston and vehicle part or between cover plate and vehicle part with its axis transverse to that of piston
DE10304613B4 (en) * 2003-02-05 2012-11-22 Continental Teves Ag & Co. Ohg Rolling bellows air spring with joint
DE102004048828A1 (en) * 2004-10-07 2006-04-20 Zf Friedrichshafen Ag Air spring with a ball joint
DE102005060332B3 (en) * 2005-12-16 2007-02-15 Zf Friedrichshafen Ag Pneumatic spring leg e.g. for spring, has pneumatic spring with moving bellows which are connected to end of bearing
WO2007073819A1 (en) * 2005-12-16 2007-07-05 Zf Friedrichshafen Ag Pneumatic spring strut

Also Published As

Publication number Publication date
DE19704433A1 (en) 1998-08-13

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE

D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation