Patent ID: 6401558
Filing Date: 2002-06-11
Classification: F16D,F16H,Y10T

Abstract:
An automated gear change (1) for an automobile vehicle, in particular for an industrial vehicle, comprising:an input shaft (2); an output shaft (3); a geared transmission (4) interposed between the input and output shafts (2, 3) and including at least one auxiliary shaft (7) and a plurality of gears (8) mounted in an angularly idle manner with respect to at least one (3) of the input, output and auxiliary shafts (2, 3, 7); engagement means (15, 30, 31) associated with each gear (8) that can be selectively actuated in order to make the gear (8) angularly rigid with at least this one (3) of the shafts (2, 3, 7); and actuation means (21) of electromagnetic type for actuating the engagement means (15, 30, 31); wherein the engagement means (15, 30, 31) includes, for each gear (8), at least one engagement member (16, 32) mounted to slide in a first and a second hole (18, 17; 34, 33) formed in the relative gear (8) and, respectively, in a portion angularly rigid with one (3) of the shafts (2, 3, 7), having respective axes distinct from an axis (A) of one (3) of the shafts (2, 3, 7), and facing one another and communication at prefixed angular positions of the relative gear (8) and the one (3) of the shafts (2, 3, 7), the engagement means (16, 32) being movable, under control of the actuation means (21), between a first disengaged operating position in which it exclusively engages one of the first and second holes (18, 17; 34, 33) and a second engaged operating position in which it engages both the relative first and second holes (18, 17; 34, 33).