Six-gear or seven-gear selector transmission for a motor vehicle

A six-gear or seven-gear vehicle transmission (1, 30) having a single clutch (K1), an input side of which is connected with a drive shaft (2) of a prime mover and an output side (3) with a single input shaft (4), first and second countershafts (5, 6) upon which are rotatably supported idler wheels (7, 8, 9, 10, 15, 16, 17, 34, 35, 36), fixed wheels (11, 12, 13, 14, 33, 37) non-rotatably situated upon said single input shaft (4) and in tooth contact with said idler wheels (7, 8, 9, 10, 15, 16, 17, 34, 35, 36), coupling devices (22, 23, 24, 25, 31, 32) non-rotatably and axially movably supported upon said first and second countershafts (5,6) and movable by setting devices, and an output gear wheel (18, 19) fastened on each of the first and second countershafts (5, 6) and in tooth contact with a toothing (20) of a differential transmission (21),

• wherein each two gear positions disposed in a shifting gate of one of an H- or multi-H-shifting gate (G1-G2;
• G3-G4;
• G5-G6;
• G7-RG) are associated in the transmission with two different coupling devices (22, 23, 24, 25, 31, 32), of said fixed wheels (11, 12, 13, 14, 33, 37) situated upon said single input shaft (4), at least two fixed wheels (12 or 37, 13, 14) are each in tooth contact with two idler wheels (8, 15;
• 35, 36;
• 9, 16;
• 10, 17);
• and
• an idler wheel (17) for a second gear (G2) is situated upon the first countershaft (5) and an idler wheel (10) for a reverse gear (RG) is situated upon the second countershaft (6), and a common fixed wheel (14) drives both idler wheels (10, 17).