Patent ID: 7975567
Filing Date: 2011-07-12
Classification: F16H,Y10T

Abstract:
1. A device for controlling a gearbox, in particular for a motor vehicle, comprising at least one mobile permanent magnet displaceable by a control lever in front of three groups of fixed permanent magnets borne by a support and cooperating by magnetic attraction or repulsion with the at least one mobile permanent magnet in order to define at least one position of the lever and to compensate the play of the lever in this position, wherein the mobile permanent magnet is borne by a transmitter means driving the end of a shaft for selecting and changing gears, emerging from the casing of the gearbox and wherein the group of fixed permanent magnets is borne by the casing of the gearbox, and wherein the at least one mobile permanent magnet is displaceable in rotation and in translation in front of the three groups of fixed magnets defining stable neutral gear, gear selecting and gear changing positions and exerting on the at least one mobile permanent magnet, restoring forces towards these stable positions, and wherein the three groups of fixed permanent magnets are distributed along the trajectory in rotation of the at least one mobile permanent magnet and extend parallel to the translational direction of the at least one mobile permanent magnet over a length substantially equal to the translational travel of the at least one mobile permanent magnet.