Contitech Luftfedersysteme Gmbh

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Conitech Luftfedersysteme Gmbh

Contitech Luftedersysteme Gmbh

Gerhard Thurow

Paul Cerny

Christoph Bank

Roland Altsinger

Joachim Frey

Peter G&ouml;nnheimer

Stefan Wode

Bernd Acker

Hubertus Gawinski

Helmut Luncz

Martin Winkler

Gunter Drescher

Matthias R&ouml;mer

Peter Gönnheimer

Joachim Jeischik

Hans-Peter Klander

Karl-Heinz R&ouml;ss

Darko Meljnikov

Bernhard Kirsten

Michael Keller

Klaus Schreck

Andreas Zeltlitz

Siegfried Dietrich

Hartwig Voss

Konrad Muller

Klaus Pohlmann

R&uuml;diger Rutz

An air spring rolling-lobe flexible member, which is made of elastomeric material, has a reinforcement arrangement which is embedded in the flexible member wall (). The reinforcement arrangement extends along the entire length of the flexible member and is of rubber-coated cord fabric layers (). The flexible member has a non-symmetric reinforcement arrangement wherein the one outer fabric layer () or the several outer fabric layers has/have a stress-elongation characteristic which is different from that of the one inner fabric layer () or the several inner fabric layers.

Air spring rolling-lobe flexible member made of elastomeric material

A double rolling-lobe flexible member spring arrangement () includes two coaxial spring components (and) which are arranged opposed to each other. The spring components essentially each include a rolling-lobe flexible member (and) and respective roll-off pistons (and). The two rolling-lobe flexible members (and) define a common double rolling-lobe flexible member () and the two spring components (and) have a common outer jacket (). A reliable effective fixing of the flexible member () to the inner side of the outer jacket () is ensured. To provide this fixation, the double rolling-lobe flexible member () has a support ring () lying centrally on the inner side thereof and this support ring has a radial recess () on its periphery. The outer jacket () has a peripherally-extending raised portion at its inner periphery which engages into the recess () of the support ring () and defines a clamp contour.

Double rolling-lobe spring arrangement

The invention relates to a spring system ( ) having two spring units ( ) arranged coaxially with respect to each other. Each spring unit essentially includes a flexible member ( ) and a roll-off piston ( ). The two flexible members ( ), the roll-off pistons ( ) and a common outer jacket ( ) enclose a common pressure space ( ) filled with compressible gas or with a hydraulic liquid. A contamination flexible member ( ) is mounted between the roll-off piston ( ) and the outer jacket ( ) in order to prevent a contamination of the flexible member roll-off surfaces. The contamination flexible member ( ) is clamped, on the one hand, in the region of the roll-off piston ( ) and, on the other hand, on the outer jacket ( ). The effective length of the contamination flexible member ( ) is somewhat less than the effective length of the shorter of the two work flexible members ( ). In this way, the contamination flexible member ( ) functions additionally as an end stop (pull stop).

Spring system

A combined spring-and-shock-absorber system for supporting wheel suspensions or axles on a vehicle body has a tubular roll bellows (U-bellows) arranged between a wheel-bearing or wheel-controlling connection and a connection on the vehicle body side, the bellows being arranged between an outer bell and a rolling piston, the outer bell and the rolling piston, in each case, having at least partially varying diameters over the height of the corresponding component, and having walls that contact the tubular roll bellows. Both ends of the tubular roll bellows being sealingly secured on the rolling piston at segments having different diameters, the lower mounting section having a larger diameter than the upper mounting section. For this purpose, a tubular roll bellows is used, which is configured as a differential roll bellows, whose interior is filled with a fluid and communicates with a hydraulic accumulator supported on the chassis and/or vehicle body. On the basis of the present invention, a combined spring-and-shock-absorber system is developed, which contains a friction-free displacement device in a thin construction.

Spring-and-shock absorber system having differential roll bellows

The sleeve-shaped rolling-lobe flexible member ( ) of a rolling-lobe spring ( ) is made of elastomeric material and is provided with a reinforcement layer. The ends of the sleeve-shaped rolling-lobe flexible member ( ) include neither beads nor cores. The rolling-lobe flexible member ( ) is attached pressure-tightly to a cover ( ) functioning as a connecting part and/or to a roll-off piston ( ) of the spring ( ). This pressure-tight attachment is achieved in that each clamping region ( ) of the connecting part (cover and/or roll-off piston ) is provided with a drawn-in connecting surface having at least one peripherally-extending raised portion ( ). Clamp rings ( ) are assigned to corresponding clamping regions ( ) of the connecting parts ( ). The clamp rings ( ) have respective peripherally-extending recesses ( ). The peripherally-extending raised portion ( ) provided at the attachment surface of the corresponding connecting part ( ) and/or the peripherally-extending recesses ( ) located in the corresponding clamp rings ( ) are configured to have a rectangular cross section whereby a form-tight connection of the reinforcement layer in combination with a redirection thereof results during the clamping process.

Rolling-lobe spring

A spring arrangement includes two coaxial spring components ( ) which are mounted so as to oppose each other. Each of the spring components includes a rolling-lobe flexible member ( ) and a roll-off piston ( ) corresponding thereto. The two rolling-lobe flexible members ( ) define a common double rolling-lobe flexible member ( ) and the two spring components ( ) have a common outer jacket ( ). A simple assembly and a reliable fixation of the double rolling-lobe flexible member ( ) on the outer jacket ( ) is provided. For this purpose, the double rolling-lobe flexible member ( ) has a clamp ring ( or ) mounted internally. The outer jacket ( ) includes two parts ( and ) having respective ends. The double rolling-lobe flexible member ( ) is clamped between these ends with the aid of the clamp ring ( and ). The air spring arrangement is especially applicable in the forward wheel fork ( ) of a two-wheel vehicle.

Spring arrangement having a double rolling-lobe flexible member

The invention is directed to a spring system for a vehicle including a two-wheel vehicle. The spring system includes first and second spring units mounted coaxially to each other. The first spring unit includes a first roll-off piston and a first rolling-lobe resilient member coacting with the first roll-off piston during operation of the spring system. The second spring unit includes a second roll-off piston and a second rolling-lobe resilient member coacting with the second roll-off piston during operation of the spring system.

The invention relates to a system having an air spring flexible member (,) which is clamped between a cover plate (,) and a rolloff piston (,). The movement of the rolloff piston (,) is pregiven by a curved path (,). The rolloff piston (,) is curved with the curvature being at least segmentwise of the same orientation as the curvature of the curved path (,). Because of the curvature of the rolloff piston (,), a lateral offset of the flexible member (,) to the cover plate (,) can be substantially avoided when the rolloff piston (,) plunges into the flexible member (,). The formation of a rolling lobe (,) having a different width over its periphery is also avoided.

Air spring system

The invention relates to an air spring having a composite flexible member 4 in which cords 22 are embedded as a reinforcement. The cords 22 have cord angles to the peripheral direction of the flexible member 4 over the longitudinal length of the flexible member. The flexible member 4 comprises two flexible-member components (12a, 12b). The cord angle a in the first flexible-member component 12a is different from the cord angle .beta. in the second flexible-member component 12b. A method for making such an air spring is also disclosed.

Air spring having a non-constant cord angle and method for making said

A rolling-lobe air spring is made of elastomeric material and includes a reinforcement layer made of rubberized textile cord fabric layers. The reinforcement layer extends over the length of the flexible member of the air spring. The cord threads of the textile cord fabric layers are arranged so that they are inclined relative to the peripheral direction of the flexible member. During operation, a rolling lobe is formed which changes during spring operation. The reinforcement layer includes three rubberized cord fabric layers (21, 22, 23) one atop the other. This provides a rolling-lobe air spring having a longer service life at higher internal pressures and smaller roll-off radii in the rolling lobe. The threads of the middle cord fabric layer 22 are arranged so as to cross the threads of the first and third layers. The middle cord fabric layer 22 has a strength which corresponds to the sum of the strengths of the first and third layers.

Rolling-lobe air spring having a flexible member made of elastomeric

The invention relates to a method for producing a vulcanizable composite material which can be dynamically stressed. The material is made of an elastomeric matrix having a reinforcement layer made of a textile fabric embedded therein. The fabric is prepared with an aqueous dispersion of synthetic resin and latex before being embedded in the elastomeric matrix and then dried. An adhesive interface coating is applied to the dried fabric with the coating being vulcanizable polar rubber present in an organic solution. The dried fabric provided with the adhesive interface coating is rubberized with a thin coating of rubber stock and embedded in the elastomeric matrix. An organic solution of toluene which contains chlorosulfonated polyethylene (CSM) as a vulcanizable polar rubber is used to apply the adhesive interface coating in order to produce a composite material which provides a good adhesion between the reinforcement layer and the elastomeric matrix even in the presence of high alternating flexural stresses.

Wall for an air-spring bellows

A rolling bellows for pneumatic cushioning or shock absorption of a vehicle. Such rolling bellows are stressed particularly severely during telescoping in the pressureless state during assembly and also under emergency condititions. In order to avoid the occurrence of tension cracks from such causes, the rolling bellows are provided in the region of the cylindrical curvature, and on the inner surface, with integrally formed-on raised surface portions.

Rolling bellows for pneumatic cushioning of a vehicle

A pneumatic shock absorber, especially for road vehicles. The rolling bellows of the shock absorber is made of a simple hose body which has no end beads, and is mounted with the aid of metal clamping rings on vehicle parts which are cushioned relative to one another. To simplify mounting, the mounting regions of these parts are provided with reduced-diameter engagement surfaces. To improve this mounting system, the support piston which is associated with the lower end portion of the rolling bellows is provided with circumferential ribs which are disposed in at least one axial portion of the reduced-diameter mounting region thereof. These circumferential ribs preferably have a triangular cross-sectional shape. The frictional mounting is thus supplemented and reinforced in a simple manner by a positive connection, so that the rolling bellows is reliably secured relative to every disadvantageous axial movement.

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Garbsen, Germany

Gerhard Thurow