Actuating device for a motor vehicle brake

An actuating device for a motor vehicle brake, comprising the following components:

• an actuating apparatus,
• a pressure-supply device configured to be driven by an electromotive drive, and which is in the form of a piston pump or a double-stroke piston pump,
• a piston-cylinder unit configured to be actuated by the actuating apparatus and hydraulically connected to a pressure medium reservoir vessel, and which forms at least two pressure spaces which are connected to hydraulic brake circuits,
• a valve arrangement having valves arranged for wheel-specific adjustment of brake pressures and for disconnecting or connecting the wheel brakes to or from the pressure supply device and/or the piston-cylinder unit, and
• an electronic control unit (ECU),
• wherein a longitudinal axis of the piston-cylinder unit and a longitudinal axis of the piston pump or double-stroke piston pump of the pressure supply unit are arranged transversely with respect to one another,
• wherein the piston-cylinder unit and the pressure supply unit are arranged in a first housing,
• wherein the electromotive drive, the first housing, the valve arrangement and the electronic control unit are arranged stacked one on top of the other, in a stacking direction, to form a stack, and
• wherein the longitudinal axis of the piston-cylinder unit is arranged transversely with respect to the stacking direction and the longitudinal axis of the pressure supply device is arranged parallel to the stacking direction, wherein the stacking direction is arranged vertically or at an angle of 5° to 30° with respect to vertical,
• wherein actuation of a sensor target is performed via a rack and pinion, and wherein a play adjustor is provided on the rack and pinion, which comprises an elastic shaft.