Steer-by-wire steering system having an electromechanical steering lock

摘要

The invention relates to a steering device for a road vehicle according to the steer-by-wire principle with a steering wheel that can be operated by a driver and with a steering gearbox that is not permanently mechanically coupled in a forcible manner, which is equipped with an electric motor drive for swivelling steered wheels, wherein the electric motor drive comprises an electric motor, a pinion (1), a belt (2) and a belt pulley (3), wherein the belt pulley (3) is coupled via the gearbox to a threaded spindle (4), and wherein an electromechanical blocking of the electric motor drive is provided on or in the steering gear.

主权项

1. A steering device for a road vehicle according to the steer-by-wire principle, including:
a steering wheel arranged to be operated by a driver; a steering gear that is not permanently mechanically coupled to the steering wheel, and which includes:
an electric motor drive configured for swivelling steered wheels, wherein the electric motor drive comprises:
an electric motor; anda gearbox, the gearbox comprising a belt drive including a toothed belt having teeth arranged on the outside of the toothed belt; andan electromechanical locking device on or in the steering gear for locking the electric motor drive, the electromechanical locking device comprising a brake shoe having a toothed arrangement compatible with and facing towards the teeth on the outside of the toothed belt, wherein the brake shoe is pressed in a radial direction against the belt drive to positively engage the toothed arrangement with the teeth when the electromechanical locking device is in a locked state.