Connection between a tie rod linkage and a steering knuckle arm

Details Connection between a tie rod linkage and a steering knuckle arm Connection between a tie rod linkage and a steering knuckle arm

1999-06-30

2001-07-10

Browne, Lynne H. (Department: 3629)

Joints and connections

Articulated members

Pivoted

C403S135000, C280S093511

Reexamination Certificate

active

06257795

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to an improved connection between a steering knuckle arm and a tie rod linkage and more particularly to a connection incorporating a spherical bearing with an integral seal, disposed within a machined recess of either the tie rod linkage or steering knuckle arm.
DESCRIPTION OF THE PRIOR ART
Prior art connections require a tapered bore to be machined in either the steering knuckle arm or tie rod linkage which is difficult and costly to manufacture with precision. If the taper is cut too deep or too shallow, then the mounting stud will not seat properly. If the taper angle is not held correctly there is a potential for the tie rod end/ball stud breakage. Joint looseness will lead to premature tire wear. Moreover, bearing connections employing a boot seal around a spherical ball stud pose additional drawbacks. These prior art connections and boot seals are expensive, difficult to assembly and to do not adequately protect the bearing connection. Seal damage and resulting wear of the ball joint due to contamination increase the cost of warranty for steering axles.
SUMARRY OF THE INVENTION
The present invention is directed to a connection between a tie rod linkage and a steering knuckle arm. The steering knuckle arm (or tie rod linkage) is machined with a cylindrical bore to receive a spherical bearing. The spherical bearing has its own integral seals. A mounting stud is pressed into the spherical bearing and connected to the tie rod linkage (or steering knuckle arm). The high warranty boot seal of the prior art is thus eliminated. The tie rod linkage and steering knuckle arm may then be installed much closer thus providing improved wheel clearance when the axle is steered in full range. Axle assembly deflection under load characteristics is also improved.


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