Rotational movement transmission coupling device for steering column of motor vehicle, has connection elements provided with same pivoting distance such that intersection points constantly form parallelogram to permit displacement of device

摘要

The device (1) has metallic connection elements (31, 32) including ends that are mounted on pivots (41-44) of identical rigid assemblies (11, 12), respectively, and pivoting planes provided with a same center pivoting distance. The elements are provided with a same center pivoting distance such that four intersection points that intersect axes of the pivots with a transmission plane, constantly form a parallelogram for permitting an axial displacement i.e. sliding, of the device.