Actuation device for a hydraulic actuation system, in particular a motor vehicle brake or an electrified clutch actuator, optionally with gear actuator

Actuation device according to any one of the preceding claims, characterised in that an intermediate housing (14) is arranged between the motor housing (16) and the first housing (GH1) which in particular is made of sound-damping material and/or has sound-damping properties, in particular owing to its configuration.

Actuation device according to any one of the preceding claims, characterised in that the housings (GH1, HCU, ECU) of the actuation device have, together in the cross-section, a substantially rectangular shape, wherein the cross-sectional plane runs parallel to the plane of the bulkhead of the engine compartment.

Actuation device according to any one of the preceding claims, characterised in that a fastening flange is provided on the first housing unit (GH1) with sound-damping additional elements to fasten the unit to the front wall of a vehicle.

Actuation device according to any one of the preceding claims, characterised in that at least the sensor evaluating elements, in particular the pedal path sensors, in particular all sensor evaluating elements are arranged on a system circuit board (PCB) in the ECU or are connected thereto and in that at least one sensor target, in particular in the form of a magnet is arranged at a short distance (<5 mm) from the sensor evaluating element.

Actuation device according to any one of the preceding claims, characterised in that the sensor actuation devices are arranged in the first housing unit (GH1) and the movement of the motor rotor is transferred via a cone gear wheel drive to a target (in particular a magnet) and wherein the evaluating element of the sensor is arranged on a system circuit board (PCB) in the control unit (ECU).

Actuating device according to any of the preceding claims, characterised in that a connecting element, in particular plug (1) to connect to the vehicle's electrical system is arranged laterally beside the control unit (ECU) or on the front side on the control unit (ECU), in particular partially below a projection of the control unit ECU and/or the reservoir (VB).

Actuation device according to any one of the preceding claims, characterised in that the connecting element, in particular the plug (1) is plugged or pluggable in the horizontal plug-in direction into the control unit (ECU) and/or is a plug with in particular rectangular cable outlet, wherein in particular the plug-in direction is selected or provided such that it is aligned to the vehicle outside and not in the direction of the vehicle centre.

Actuation device according to any one of the preceding claims, characterised in that connections (15) for the hydraulic lines to the hydraulic circuits, in particular wheel brakes are arranged on the front side on the valve arrangement (HCU) or the second housing (GH2), in particular on the side of the actuation device facing away from the connection, in particular the brake pedal.

Actuation device according to any one of the preceding claims, characterised in that the hydraulic actuation system is an electrified clutch actuator with gear actuator.

Actuation device according to any one of the preceding claims, characterised in that the piston cylinder unit (10, main cylinder) is hydraulically connected to a pressure medium reservoir (VB) and the piston cylinder unit (10, main cylinder) forms at least two pressure chambers which are connected or connectable to hydraulic circuits, in particular brake circuits.

Actuation device according to any one of the preceding claims, characterised in that the axis (H) of the piston cylinder unit (10, main cylinder) and the axis (H1) of the piston or double stroke piston pump of the pressure supply device (11) are arranged parallel to one another and spaced from one another in the vertical direction,

Actuation device according to any one of the preceding claims, characterised in that the piston cylinder unit (10, main cylinder) and the pressure supply unit (11) are arranged in a first housing (GH1), wherein the drive (M) is fastened to the first housing (GH1) and arranged below the axis (H) of the piston cylinder unit (10).

Actuation device according to any one of the preceding claims, characterised in that a connection channel connects the piston cylinder unit (10) and the reservoir (VB) to one another, wherein the connection channel is formed by a pipe, in particular a hose and not by a hole.

Actuation device according to any one of the preceding claims, characterised in that at least one screw to fasten the actuation device in the engine compartment is a so-called “front bolted” screw which is accessible or screwable from the front of the vehicle.

Actuation device according to any one of the preceding claims, characterised in that the drive (M), in particular with its housing, abuts directly on the control and regulating unit (ECU), wherein the motor and piston of the pressure supply device (11) are arranged coaxially and in particular the valve arrangement (HCU) is arranged between the pressure supply device (11, GH2) and the control and regulating unit (ECU).

Actuation device according to any one of the preceding claims, characterised in that the rotatable spindle (25) is arranged inside the rotor (22) of the motor (M) and is connected thereto and the piston (11) is connected to the spindle nut (26) and rests with the spindle (25) on an axis, wherein the piston is designed as a single or double stroke piston.

Actuation device according to any one of the preceding claims, characterised in that the rotor (22) is mounted with a bearing (20), preferably a 4-point bearing, on one side in the motor housing (16).

Actuation device according to any one of the preceding claims, characterised in that the spindle (25) is connected to an elastic flexible rod (BS) in order not to transfer radial movement, in particular in the form of an impact, of the rotor axis to spindle with ball screw drive and piston.

Actuation device according to any one of the preceding claims, characterised in that a rotation lock of the piston takes place in the pressure chamber and a shaped piece (33) for rotation lock is supported in a slide bearing (34).

Actuation device according to any one of the preceding claims, characterised in that the pressure supply device (11) is designed either as a piston pump, which is connected to the reservoir (VB) via at least one valve (SV1 or SV2), or is designed as a double stroke piston pump, which is connected to the reservoir (VB) via at least two valves (SV1 and SV2).

Actuation device for a hydraulic actuation system, in particular a motor vehicle brake or an electrified clutch and gear actuator comprising the following components, a connection for an actuation device, in particular in the form of a brake pedal or a clutch actuation device, a pressure supply device (11) driven by an electromotor drive (M) in the form of a piston or a double stroke piston pump, wherein the drive (M), directly or via a transmission gear, in particular a circulating ball gear, adjusts the piston of the piston or double stroke piston pump or for an actuation device according to any one of the preceding claims, characterised in that an elastic flexible rod (30) is arranged between the drive (M) with circulating ball gear and the piston of the pressure supply unit (11).