Patent ID: 8834314
Filing Date: 2014-09-16
Classification: B60K,B60Y,F16H,Y02T,Y10S

Abstract:
1. A regenerative brake device for a vehicle, the vehicle having a combustion engine with an output shaft and a gearbox with an input shaft, the gearbox being configured for connecting the output shaft with a drive wheel of the vehicle; the regenerative brake device comprises: the output shaft of the combustion engine; the input shaft of the gearbox; an electrical machine which comprises a stator and a rotor; a planetary gear which comprises a sunwheel, a ring gear around the sunwheel and a planet wheel carrier between the sunwheel and the ring gear; a movable piston between the sunwheel and the ring gear, and located and configured such that the piston causes the engine output shaft to be disconnectably connectable to the planetary gear, the piston being movable to a first position at which the piston connects the engine output shaft to the planetary gear, and the piston being movable to a second position at which the piston disconnects the engine output shaft from the planetary gear; the engine output shaft is disconnectably connected to the planetary gear's sunwheel, and the sunwheel has a common axis of rotation with the engine output shaft; the piston is configured as an annular sleeve which in the first position substantially concentrically surrounds a portion of the engine output shaft and a portion of the planetary gear, wherein the portions of the engine output shaft and of the planetary gear include first splines which in the piston's first position cooperate with second splines on the piston to form a splined connection between the piston and the respective portions of the output shaft and the planetary gear, and the piston is movable along the engine output shaft and the planetary gear; and the piston being movable to a third position at which the piston acts upon a connecting device which connects the planetary gear to an element which is fixed relative to the planetary gear.