Patent ID: 11951821
Assignee: VOLVO TRUCK CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 0:
1. A gearbox for an electric powertrain, the gearbox comprising:
a primary shaft, on which are arranged a first primary gear which is fixed in rotation with respect to the primary shaft, a second primary gear, and a third primary gear;
a secondary shaft, on which are arranged a first secondary gear that is meshing with the first primary gear and that is by default free to rotate around the secondary shaft, a second secondary gear meshing with the second primary gear, and a third secondary gear meshing with the third primary gear;
a first coupling member, which is arranged along the secondary shaft and which can be moved between:
an engaged position, in which it couples the first secondary gear in rotation with the secondary shaft; and
a neutral position, in which the first secondary gear can rotate around the secondary shaft; and

a second coupling member, which is arranged along one shaft among the primary and the secondary shafts and which is movable between:
a first position in which it couples one of the second and third gears in rotation with the one shaft;
a second position in which it couples the other of the second and the third gears in rotation with the one shaft; and
a neutral position in which the second and the third gears can rotate around the one shaft;
wherein the second and the third gears arranged along an other shaft, other than the one shaft, among the primary shaft and the secondary shaft are by default each free to rotate around the other shaft and wherein a third coupling member is arranged along the other shaft and is movable between:
a first position in which it couples one of the second and third gears in rotation with the other shaft;
a second position in which it couples the other of the second and third gears in rotation with the other shaft; and
a neutral position in which the second and third gears can rotate around the other shaft.