Lemforder Metallwaren Ag

Zf Friedrichshafen Ag

Zf Lemforder Metallwaren Ag

Zf Lemf&ouml;rder Metallwaren Ag

Wolfgang Kleiner

Reinhard Buhl

Martin Rechtien

Klaus Br&ouml;ker

Volker Grube

Metin Ersoy

Burkhard Schafer

Jochen Kruse

Manfred Heidemann

Alfons Nordloh

Paul Westphal

Jürgen Schmitz

Dirk Adamczyk

Wolfgang Eulerich

Benjamin Ziebart

Frank Schmeink

Michael Heuer Gen Hallmann

Christian Rziczny

Horst Pott

Klaus Pape

Philippe Milos

Dirk Maehlmann

Dirk Mählmann

Ulrich Schefzyk

Rainer Jasper

Johannes Tabor

Thomas Wiegmann

A ball joint with a ball pin and a steel ball pin with a joint ball. The ball joint and ball pin are suitable for use when, for example, solid-on-solid friction predominates under high static pre-loading or high operational loads and with small joint movements. A portion of the surface of the ball pin has surface layer hardening in order to increase a fatigue strength of the ball pin. The ball pin and the ball joint, on portion of the ball pin without the any surface layer hardened, includes a nitrided layer as wear protection. The ball pin and the ball joint provide an advantageous combination of high fatigue strength, good corrosion protection and high wear-resistance. The nitrided layer of ball joints, previously only regarded as improving corrosion protection, also functions as a wear protection. Thus, these ball pins overcome the mutual exclusion between surface layer hardening and nitriding.

Ball pin and ball joint

A ball joint with a housing formed entirely by a cold forming method. The housing having an inner chamber for receiving the joint ball of a ball pin and an opening through which the ball pin extends, and a contact area on the outer surface area of the housing forms a seal with a bellows. A forming section of the housing secures the joint ball within the inner chamber such that the joint pall can both rotate and pivot. Following completion of the housing, the material displaced during the cold forming method creates the forming section of the housing. The method for producing a ball joint comprises the steps of producing a metallic housing blank with a thickening formed by compression, forming the outer contour of the housing by compression, shaping the inner contour of the housing through dishing, and using the displaced material for creating the forming section.

Ball joint and method for the production thereof

A joint housing ( ) has a housing recess ( ), a pivot pin ( ), mounted in the housing recess. The pivot pin has a joint ball ( ) provided with a surface protection. A pin section protrudes from a housing opening ( ), with a bearing shell ( ) arranged between the joint housing and the joint ball, and with a closing ring ( ), which closes the housing recess of the joint housing and tensions the bearing shell arranged therein in the joint housing. The closing ring follows essentially with its inner contour the outer contour of the bearing shell due to a bevel or a radius formed. The closing ring ( ) to be inserted into the joint housing is fixed in its position in the joint housing ( ) and has a sealing lip ( ) which is in contact with the joint ball ( ) under elastic pretension on the side of the housing opening ( ) through which the pin section of the pivot pin ( ) protrudes from the joint housing ( ).

Ball joint

A ball-and-socket joint is provided with a joint housing which is open on at least one side with a housing recess, with a joint pin mounted in the housing recess with its joint ball provided with a surface protection. A pin section projects from a housing opening. A bearing shell is arranged between the joint housing and the joint ball. A sealing bellows is provided between the joint housing and the joint pin. A sealing element, which is under elastic pretension in sliding contact with the joint ball, is arranged between the joint housing and the joint ball.

Ball-and-socket joint

A ball-and-socket joint preferably for vehicle suspensions or steerings of motor vehicles with a joint housing, with a housing cover closing the joint housing on one side, and with a pivot pin, which is mounted rotatably and deflectably in at least one bearing shell using a spherical bearing surface, is described. The bearing shell is in turn stationarily fixed in the joint housing and an elastic buffer element (,) is arranged on the outside of the joint housing (,) facing away from the pivot pin (,).

A mounting for a shift lever (1) for the mechanical remote control of a selector shaft of a gear change box in motor vehicles, in which the shift lever (1) is mounted pivotably around a selection axis and around a shifting axis, which is at right angles thereto, by means of a spherical part (2) of a universal joint in a bearing box (4) in a housing (3) that is a rigid part of the body, and is connected by coupling members (7, 16) to a sliding selector shaft of a gear change box. The coupling members for transmitting the movement of the shift lever to the sliding selector shaft are connected, articulated around an axle (9, 12) each, to the spherical part (2) of a universal joint, wherein the axle extends in one pivoting plane of the shift lever (1) at right angles to the pivot axis of the shift lever in the other direction of pivoting.

Shift lever mounting with independent movement in shifting plane and

A steering tie rod or similar strut for motor vehicles with a securing member (4) acting in the longitudinal direction of the steering tie rod is described, which securing member comes into action when a defined, axially acting load value is exceeded. In another variant of the present invention, the length of the steering tie rod may undergo a limited change after the securing member has been overcome, so that limited fitness for use of the vehicle is maintained.

Steering tie rod for motor vehicle

To improve the corrosion protection at the connection site of the sealing cuff and the ball pivot, it is proposed, in a design in which the sealing cuff engages with an edge profile in a complementary profile of a retaining ring rigidly attached to the ball pivot, that at least the part (12) of the retaining ring (10) which is supported by the edge of the bearing lug (6) consists of a material whose value in the electrochemical series is lower than that of the material of the bearing lug (6) and of the ball pivot (2). By this construction the material of the retaining ring acts as an electrolytic sacrificial anode.

Ball joint with sealing cuff for motor vehicles

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Wagenfeld, Germany

Wolfgang Kleiner