Patent ID: 6039669
Filing Date: 2000-03-21
Classification: F16H,Y10T

Abstract:
A gear change for an automobile vehicle, in particular an industrial vehicle, of the type comprising an outer box (4), an input shaft (10) and a driven shaft (12) coaxial with one another, and at least one countershaft (11) that can be angularly coupled with the input shaft (10) and with the driven shaft (12) by means of a plurality of pairs of toothed wheels (13) in order to define a plurality of transmission ratios between the input shaft (10) and the driven shaft (12), the input shaft (10) and the driven shaft (12) having respective first end portions (13, 15) axially opposite one another and respective second portions (17a, 19) adjacent to one another, the first portions (13, 15) of these shafts being borne via bearings (14, 16) by respective walls (5, 9) of the box (4), the second portion (17a) of one of these shafts (10) having a cavity (17) housing the second portion (19) of another one of these shafts (12), characterised in that it comprises two bearings (20) housed in the cavity (17), interposed between the second portions (17a, 19) of the shafts (10, 12) and axially spaced from one another in order to define a relative support between these shafts (10, 12), said gear change further comprising, in cascade, a main train (2) comprising said input shaft (10), the countershaft (11) and the driven shaft (12) and an epicyclic range reducer (3) having a sun gear (44) rigid with said driven shaft (12).