DE19704433A1 - Pneumatic spring for motor vehicle wheel suspension - Google Patents

Pneumatic spring for motor vehicle wheel suspension

Info

Publication number
DE19704433A1
DE19704433A1 DE1997104433 DE19704433A DE19704433A1 DE 19704433 A1 DE19704433 A1 DE 19704433A1 DE 1997104433 DE1997104433 DE 1997104433 DE 19704433 A DE19704433 A DE 19704433A DE 19704433 A1 DE19704433 A1 DE 19704433A1
Authority
DE
Germany
Prior art keywords
components
air spring
motor vehicle
ball
component
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
DE1997104433
Other languages
German (de)
Other versions
DE19704433C2 (en
Inventor
Peter Dipl Ing 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
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The pneumatic spring comprises two parts (1,2), i.e. a piston (1), and a cylinder (2), both of which are hinged on the vehicle body or wheel guide element by a ball-and-socket joint (5,6). The centric force-guided movement of the piston and cylinder is formed by a guide-cylinder connecting rod mechanism. The guide cylinder is fixed to one of the two parts (1,2), and the connecting rod (10) may be fixed to the other part.

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.

Solche Luftfedern sind für Kraftfahrzeuge beispielsweise be­ kannt aus DE 40 18 712 A1 und DE-AS 17 55 810.Such air springs are, for example, be for motor vehicles known from DE 40 18 712 A1 and DE-AS 17 55 810.

Bei diesen bekannten Luftfedern sind die gegeneinander beweg­ lichen Bauteile nicht ausreichend definiert gegeneinander ge­ führt.In these known air springs, they move against each other components are not sufficiently defined against each other leads.

Hier eine Verbesserung zu schaffen, ist das technische Pro­ blem mit dem sich die Erfindung beschäftigt und das sie bei einer gattungsgemäßen Luftfeder mit den kennzeichnenden Merk­ malen des Patentanspruchs 1 löst.The technical pro is to create an improvement here blem with which the invention is concerned and that it a generic air spring with the characteristic note paint claim 1 solves.

Die erfindungsgemäße Zwangsführung wird vorteilhafterweise durch eine Führungszylinder-Schubstangen-Einrichtung nach An­ spruch 2 erreicht. The forced operation according to the invention is advantageous by a guide cylinder push rod device according to An spell 2 reached.  

Durch die erfindungsgemäße Anlenkung der Luftfeder sowie der Zwangsführung von deren beiden gegeneinander bewegbaren Bau­ teilen ist bei beliebigen Relativebewegungen zwischen den beiden Kugelgelenken stets eine zentrische kippfreie Bewegung der Federbauteile, die die variable Luftkammer unter Zwi­ schenschaltung eines Rollbalges bilden, gewährleistet.Due to the articulation of the air spring and the Forced control of their two mutually movable construction sharing is with any relative movements between the both ball joints always have a centric, tilt-free movement of the spring components that the variable air chamber under Zwi circuit of a bellows, guaranteed.

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

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 Bau­ teilen, nämlich einem Kolben als erstem Bauteil 1 und einem Zylinder 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 Zusatzluftvolumen zur Komfortsteigerung der Luftfeder in an sich bekannter Weise verbindbar sein.The air spring consists of two mutually movable construction parts, 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 creates a volume-variable air chamber 4 between these components. This air chamber 4 can be connected via a channel 15 to 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 Fahrzeu­ ges verbunden. The air spring is connected via a ball joint 5 and 6 to a 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-Ein­ richtung 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.Specifically, the guide cylinder push rod device 9 comprises a connecting 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 and the push rod 10 that 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 bewegli­ chen Kolben als einem ersten Bauteil und einem feststehenden zweiten Bauteil durch einen Rollbalg begrenzten volumenvaria­ blen Luftkammer für die Abfederung von Rädern eines Kraft­ fahrzeuges, bei der eines der beiden Bauteile mit der Karos­ serie und das jeweils andere Bauteil mit einem Führungsele­ ment eines Rades verbunden ist, dadurch gekennzeichnet, daß die beiden Bauteile (1, 2) über jeweils ein Kugelgelenk (5, 6) an die Karosserie beziehungsweise an das Rad-Füh­ rungselement angelenkt und die beiden Kugelgelenke (5, 6) auf einer diese beiden Gelenke (5, 6) verbindenden Geraden zentrisch mechanisch zwangsgeführt gegeneinander verschiebbar sind.1. Air spring with a variable, between a movable piston as a first component and a fixed second component by a bellows limited volume volume air chamber for cushioning the wheels of a motor vehicle, in which one of the two components with the body series and each Another component is connected to a guide element of a wheel, characterized in that the two components ( 1 , 2 ) are each articulated via a ball joint ( 5 , 6 ) to the body or to the wheel guide element and the two ball joints ( 5 , 6 ) on a straight line connecting these two joints ( 5 , 6 ) are mechanically positively guided against one another. 2. Luftfeder nach Anspruch 1, dadurch gekennzeichnet daß die zentrische Zwangsführung der beiden gegeneinander be­ weglichen Bauteile (1, 2) der Luftfeder durch eine Führungs- Zylinder-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 beiden Bauteile (1, 2) fest verbunden ist.2. Air spring according to claim 1, characterized in that the central positive guidance of the two mutually be 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 of these two 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 true DE19704433A1 (en) 1998-08-13
DE19704433C2 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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032959A1 (en) 1998-12-03 2000-06-08 Phoenix Aktiengesellschaft Pneumatic suspension system
EP1122459A2 (en) * 2000-01-31 2001-08-08 The Goodyear Tire & Rubber Company Air spring with lateral restraint and axial control
WO2002098686A1 (en) * 2001-06-06 2002-12-12 N.C.M._S.R.L. Suspension of a pneumatic type with compensation of differences in level and transfer of load
EP1416187A3 (en) * 2002-10-25 2004-11-24 Continental Aktiengesellschaft Rolling-lobe air spring with bell-shaped support
US6974003B1 (en) * 1999-12-21 2005-12-13 Daimlerchrysler Ag Spring-shock absorbing system with tubular rolled bellows
DE102008034834A1 (en) 2008-07-24 2010-02-04 Carl Freudenberg Kg Fixing unit for fixing outer spring bellow to inner side of closing unit of air spring, has spring bellow that is placed with its section edge around inner ring which lies outside pressure chamber
WO2014179581A1 (en) * 2013-05-01 2014-11-06 Firestone Industrial Products Company, Llc Gas spring assemblies and internal misalignment mounts for same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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 (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032959A1 (en) 1998-12-03 2000-06-08 Phoenix Aktiengesellschaft Pneumatic suspension system
US6511057B1 (en) 1998-12-03 2003-01-28 Phoenix Aktiengesellschaft Pneumatic suspension system
US6974003B1 (en) * 1999-12-21 2005-12-13 Daimlerchrysler Ag Spring-shock absorbing system with tubular rolled bellows
EP1122459A2 (en) * 2000-01-31 2001-08-08 The Goodyear Tire & Rubber Company Air spring with lateral restraint and axial control
EP1122459A3 (en) * 2000-01-31 2001-09-26 The Goodyear Tire & Rubber Company Air spring with lateral restraint and axial control
WO2002098686A1 (en) * 2001-06-06 2002-12-12 N.C.M._S.R.L. Suspension of a pneumatic type with compensation of differences in level and transfer of load
EP1416187A3 (en) * 2002-10-25 2004-11-24 Continental Aktiengesellschaft Rolling-lobe air spring with bell-shaped support
US6921065B2 (en) 2002-10-25 2005-07-26 Continental Aktiengesellschaft Rolling-lobe air spring having a support bell
DE102008034834A1 (en) 2008-07-24 2010-02-04 Carl Freudenberg Kg Fixing unit for fixing outer spring bellow to inner side of closing unit of air spring, has spring bellow that is placed with its section edge around inner ring which lies outside pressure chamber
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
US9770958B2 (en) 2013-05-01 2017-09-26 Firestone Industrial Products Company, Llc Gas spring assemblies and internal misalignment mounts for same

Also Published As

Publication number Publication date
DE19704433C2 (en) 2001-06-13

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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