Actuating device for a pump unit

A pump assembly comprising:

• a can;
• a drive shaft of the pump assembly arranged inside the can;
• an actuation device arranged in an axial face side of the can, the actuation device comprising:
• a carrier for connection to the can, the carrier comprising a passage extending along a longitudinal axis;
• an actuation pin led in the passage along a passage longitudinal axis and which actuation pin has a first axial end that comprises a tool receiver and an opposite second axial end that comprises an engagement region for force transmission onto a shaft;
• a spring element arranged between the actuation pin and the carrier and acting on the actuation pin in a first axial end direction with a spring force;
• and
• a seal arranged between the carrier and the actuation pin, in a region between the spring element and the second axial end of the actuation pin, wherein the tool receiver comprises an opening configured for receiving a portion of a tool at the first axial end, wherein the carrier comprises:
• an annular carrier disk between the seal and the spring element, on which carrier disk the spring element is supported;
• a spring housing;
• and
• an annular seal housing.

A pump assembly comprising:

• a can;
• a drive shaft of the pump assembly arranged inside the can;
• an actuation device arranged in an axial face side of the can, the actuation device comprising:
• a carrier for connection to the can, the carrier comprising a passage extending along a longitudinal axis;
• an actuation pin led in the passage along a passage longitudinal axis and which actuation pin has a first axial end that comprises a tool receiver and an opposite second axial end that comprises an engagement region for force transmission onto a shaft;
• a spring element arranged between the actuation pin and the carrier and acting on the actuation pin in a first axial end direction with a spring force;
• a seal arranged between the carrier and the actuation pin, in a region between the spring element and the second axial end of the actuation pin;
• an electric drive motor comprising a rotor and a stator, wherein the can is arranged between the rotor and the stator, and
• an electronics housing applied onto an axial end of the drive motor, said electronics housing comprising a channel which extends through the electronics housing in the axial direction, lies opposite the actuation device and has a cross section that is adapted to a cross section of a tool to be received and able to be brought into engagement with the tool receiver.