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Steering arrangement for motor vehicles
| Details |
Inventors: Dziuba, Peter; Jurgen, Rauter; Fusseder, Gunter;
Assignee: Zahnradfabrik Friedrichshafen AG (Friedrichshafen, DE)
Primary Examiner: Love; John J.
Assistant Examiner: Ferriter; Karin
Attorney, Agent or Firm: Ross; Karl F., Dubno; Herbert
The steering arrangement utilizes an actuator (5) supported between two steering arm bearings (16) on the corresponding wheel hub drive housing (17) or wheel hub with its piston rods capable of moving outwards on both sides in a longitudinally stiff mode. The actuator (5) is thereby connected to one side of the axle housing (2) approximately where the tapering of the axle housing (2) has occurred, by means of a connecting linkage (4) which affords angular mobility limited on all sides. Upon changes of the piston rods (15), the actuator rotates about the boss (8) placed on axle housing (2), as well as about a pivot point (10) laterally offset and standing at right angles thereto, so that under strictly rotary motion there results an approach of the acutator (5) to the axle housing (2) which is small at extreme steering angle excursions. The actuator (5) and the steering lever (16) protrude only very little from the axle housing (2) and can be combined with the axle without interfering with the pivot bearing (6), without requiring that a disadvantage with respect to steering angle (21) has to be accepted. |
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DETAILED DESCRIPTION OF THE INVENTION In FIG.
1 the steering is shown in section and depicts the vehicle longitudinal axis in a vertical position.
The linkage connection 4 to the actuator protrudes from the axle tube 2 which surrounds drive shaft 3 points downwards.
Connection 4, in normal position, protrudes from the axle tube 2 towards the rear, and in special cases towards the front.
In this illustration, the pivot 6 of the pivot bearing can be seen to the rear of linkage connection 4.
The linkage connection 4 consists here of a connecting lever 7 oriented parallel to the vehicle axis 1, operating as a pivoting lever on boss 8, which via a ball stud 10 with a stud end 11 retained therein, which ball stud is screwed into threaded sleeve 12 extending at right angles upwards from the axle housing (or, here, to the left respectively), exhibits limited angularly movable articulation on actuator 5, and makes it possible to follow the curved path of the actuator 5 due to steering excursions.
It can be seen clearly that the linkage connection 4 is made sufficiently short that it is possible to place actuator 5 closely below the pivot 6 of the pivot bearing, but still above the lower outline of the axle housing 13.
The housing is enlarged in the center for the differential, thus protected from damage, where the axial distance from axle housing 2 and actuator 5 becomes less than the axial overhang of pivot 6 of the pivot bearing.
In FIG.
2 the axle housing boss 8 for the attachment of the linkage connection 4 on axle housing 2 is laterally offset to the side of pivot 6 of the pivot bearing, visible approximately where the taper of the axle housing 2 is reached and where one of the ends of actuator 5 comes to lie, and to which linkage connection 4 is attached at a significant distance from the actuator's center, approximately opposite one of the oil pressure connections 14.
The actuator 5 bears against steering lever bearings 16 via the two piston rods 15 issuing on both sides with longitudinal stiffness which here also fill the function of the tie rod
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