| 摘要 |
A variable-length steering-gear control shaft for motor vehicles comprises a first profile, forming a male element, coupled for telescopic sliding with one of its axially hollow ends in a second tubular profile, forming a female element. According to the invention, said end zone (12.1) of said male profile (12) is coupled for telescopic sliding in relation to said female profile (11) by means (13) of mutual centring and connection which are provided in said same end zone (12.1) and act against the internal lateral surface of said female profile (11) so as to ensure over time the correct mutual axial centring of said telescopically coupled profiles (11, 12), the take-up of play and the damping of the vibrations induced between the coupled profiles, and the mutual connection of said profiles (11, 12) by non-positive coupling, in a static disposition and in antagonism to forces, for example axial, which are applied to the shaft itself and are smaller than a predetermined value, exceeding which brings about yielding of the structure by relative telescopic sliding of the same profiles. |
