Fichtel & Sachs Ag

Mannesmann Sachs Ag

Fitchel & Sachs Ag

Robert Pradel

Stefan Schiffler

Gerald Fenn

Manfred Angles

G&uuml;nther Handke

Gunther Handke

Spring strut with a pneumatic spring and an oscillation damper which can be adjusted as a function of the support pressure. The pneumatic spring has a spring space bounded by a U-type bellows, which spring space is pneumatically connected to a damping device which can be adjusted as a function of a support pressure. A component which having a duct connects the spring space and the damping device is embodied without a hose and is integrated in the spring strut in such a way that it does not form any essential surface change in an unrolling piston associated with the U-type bellows and the unrolling piston forms at least a part of this duct.

Pneumatic spring with oscillation damper adjusted as a function of the support pressure

The invention is directed to a vibration damper such as a shock strut for articulated installation between a car body and a wheel guide part in a motor vehicle by a quick connection. For this purpose, the vibration damper on the shock strut, together with an elastic joint and a connection part, forms a constructional unit or assembly unit. The quick connection is formed between the connection part and the body or the wheel guide without a catch connection and in a rigid manner, so that relative movement is prevented between the connection part and the body or wheel guide part.

Vibration damper

The invention relates to a spring-and-damper unit with an external storage device for installation between a vehicle body and a wheel guidance part. To create the greatest possible supporting length for the piston rod in a given installation space, the storage device is preferably connected to a spring plate, on which rests a carrying spring embodied as a coil spring, while the spring plate is arranged in a pressure-tight fashion on the cylinder or a container surrounding the cylinder. The interior of the cylinder or the container is hydraulically connected to the storage device via a connecting channel in the spring plate.

Spring and damper unit with external storage device

An arrangment for securing against rotation for a structural component part of a vibration damper or of a shock absorber leg for motor vehicles, which structural component part is provided with a pin type pivot bearing. A piston rod and/or a receptacle is connected, in each instance via a flexible pin type pivot bearing, with the vehicle body or with a wheel guide part. The arrangement for securing against rotation acts between the piston rod and/or the receptacle and the part which is fixed with respect to the vehicle and connected therewith. The arrangement for securing against rotation is formed by a flexible structural component part which participates in the articulated movements and is arranged so as to be positioned between the piston rod and/or the receptacle or cylinder and the part which is fixed with respect to the vehicle.

Arrangement for security against rotation of a structural component of a

A piston-cylinder unit includes a cylinder in which a piston rod is located so that the piston rod can move axially. A first connection mechanism is connected to the cylinder, and a second connection mechanism is connected to the piston rod. A positioning cylinder, with a pressure medium connection, is effectively connected to one of the first and second connection mechanisms. The distance between the first and second connection mechanisms can be set by the addition or discharge of pressure medium to or from the positioning cylinder. The positioning cylinder is located in series with the cylinder, and the piston rod forms a guide path or track for the positioning cylinder.

Shock-absorbing strut for a motor vehicle

A piston-cylinder unit for a hydropneumatic suspension system of a vehicle having a fluid-filled cylinder in which a piston having damping valves and connected to a piston rod is axially movable. The piston rod runs axially in a piston rod guide at the piston-rod exit of the cylinder and is sealed toward the outside by means of a piston rod seal. A spring surrounding the piston rod is in mounted between a first support part attached to the cylinder and a second support part attached to either the piston rod or a vehicle-fixed part. The spring, which interacts with an axially adjustable support part, can be lifted off one of the support parts. During compression of the piston-cylinder unit, the first and second support parts begin compression of the spring at the functional point of the compression. The functional point is adjustable in a predetermined position range by an adjustment device.

Piston-cylinder unit installed between a vehicle body and wheel guide

The invention relates to a connection device for a liquid or gaseous medium through an outer wall of a cylinder, whereby a connection piece interacts with a bore in the outer wall of the cylinder and with a centering part that is inserted into the bore. The connection piece has a contact surface matched to the cylinder surface and also has a corresponding sealing surface. The connection has an accommodating cavity for receiving an insert, which includes a sealing surface matched to the cylinder surface, The correct installation position of the insert in the accommodating cavity is ensured by an orientation aid.

Connection device for connecting a liquid or gaseous medium through an

A shock absorber for a motor vehicle has a single-tube construction with an adjustable damping force. The shock absorber includes a cylinder tube and a piston rod guide inside which a piston rod with a piston is located so that the piston can move axially. The piston divides the cylinder tube into two work chambers. A container tube encloses the cylinder tube, at least in segments. Between the cylinder tube and the container tube at least one hydraulic connection, extending from one of the work chambers via an overflow orifice to a damping force adjustment valve located outside the container tube, is formed. A cylinder tube guide centers the cylinder tube with respect to the container tube. The damping force adjustment valve has two connection openings, one of which openings is separated from the other by a wall. The damping force adjustment valve is connected to the hydraulic connection, so that the container tube extends over the entire length of the hydraulic connection to the piston rod guide. The seal of the container tube is realized on the piston rod guide.

Shock absorber for a motor vehicle

A shock absorber or vibration damper with a securing element which has a ring area for the axial fixing and securing of ring-shaped components, in particular for securing guide bushings and gaskets for the piston rod of a hydraulic vibration damper. The securing element is characterized by a plurality of projections which project axially to locate and fix the position of a cylindrical body, whereby the projections extend from the ring area, and the projections are bent out of the securing element. The cylindrical body secured by the projections can possibly be the inner tube of a two-tube vibration damper or a decompression stop spring. The invention teaches that the securing element can be used to perform multiple functions in part by securing multiple components.

Shock absorber or vibration damper

A shock absorber with a pneumatic spring, comprising an outer suspension tube and an inner suspension tube of a suspension unit, whereby elastic roller bellows are connected to the outer and inner suspension tubes, forming a spring chamber. The roller bellows are crimped on one end to the inner suspension tube. When the shock absorber with a pneumatic spring is fully assembled, a safety device is located on the pneumatic spring which centers the outer suspension tube in relation to the inner suspension tube, so that contact between the crimped part and the adjacent roller bellows is prevented, thereby preventing damage to the roller bellows.

Shipping safety device for a pneumatic spring

A vibration damper between a vehicle body and/or a vehicle axle, comprising a cylinder in which a piston rod is guided so that it can move axially, whereby the piston rod is connected by way of a first connection to a bearing, and the cylinder is connected by way of an additional connection to a corresponding bearing, whereby the vibration damper runs through at least one bearing and has a self-locking closure by way of at least one radially movable flexible tab. The at least one radially movable flexible tab, by way of its end surface, forms a support for the vibration damper at the bearing in question for one direction, whereby the flexible tab(s) is/are accessible in the release direction, and an elastic clamping body is provided for the opposite direction, so that the vibration damper is restrained by way of the end surface and the clamping body.

Vibration damper and a bearing support for a vibration damper

Air suspension system with a compressed air container of an air suspension system for a motor vehicle with a vehicle frame and a vehicle body, comprising a number of elastic air springs which are connected to the reservoir, whereby the air springs and the reservoir are to be considered as compressed air containers, characterized by the fact that at least one compressed air container is located inside a cavity formed by at least one vehicle part which is independent of the air suspension system strictly speaking.

Air suspension system of a motor vehicle with air shocks or air spring

A hydraulic rotary actuator within a stabilizer system divided into two parts is taught. A first stabilizer part is non-rotationally connected to a rotary actuator vane assembly, and a second stabilizer part is non-rotationally connected to a rotary actuator housing. The rotary actuator housing has hydraulic connections for hydraulic lines which form a flow connection to a hydraulic system. The two stabilizer parts can be rotated with respect to one another by the rotary actuator. The segments of the hydraulic lines which are connected to the rotary actuator, and are subject to possible deformation, are located in a plane which lies essentially perpendicular to the axis of rotation of the rotary actuator.

Rotary actuator with stabilizer in a motor vehicle suspension system

A stabilizer system with a rotary actuator has a first stabilizer part which is non-rotationally connected to a rotary actuator vane assembly. A second stabilizer part is non-rotationally connected to a rotary actuator housing. The rotary actuator housing has hydraulic connections for hydraulic lines which form a flow connection to a hydraulic system, whereby the two stabilizer parts can be rotated with respect to one another by way of the rotary actuator. The segments of the hydraulic lines which are connected to the rotary actuator and are subject to possible deformation are located in a plane which lies essentially perpendicular to the axis of rotation of the rotary actuator. A line fastener can be optionally fastened to the rotary actuator housing or to the stabilizer part which is stationary relative to the rotary actuator housing. The line fastener divides the hydraulic lines, by way of a mounting, into a stationary line segment and a movable line segment, whereby the movable line segment is oriented in a plane which is essentially perpendicular to the axis of rotation of the rotary actuator.

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Heidenfeld, Germany

Robert Pradel