Pump device with a vacuum pump and a lubrication pump

An automotive pump device comprising:

• a drive shaft which includes a drive section that can be coupled with a drive system of a combustion engine;
• a lubrication pump used in the engine oiling system and for lubricating other components that are driven by the drive shaft;
• a vacuum pump of a brake booster that is driven by the drive shaft,
• wherein the vacuum pump includes a rotor having an inner and an outer portion and two blades, said blades being movable in radial directions while being guided by the rotor whereby the blades divide pressure chambers, and whereby the blades are arranged in parallel to each other,
• said vacuum pump is arranged in the axial direction between the drive section and the lubrication pump,
• said drive shaft is rotationally coupled with the rotor and the lubrication pump includes a pump shaft that is rotationally coupled with the rotor,
• a rotary member is disposed in axial direction between the rotor and the pump shaft, said rotary member rotationally coupled at one axial end with the rotor and rotationally coupled at its other axial end with the pump shaft;
• a control element and a blocking element, said rotary member includes an activation valve to activate the blocking element;
• said activation valve comprises a pressure chamber extending inside the rotary member extending in an axial direction, which is restricted by a ram comprising the control element at its free end on a side facing away from the pressure chamber, wherein said ram acts to restrict the pressure chamber and is shiftable in the axial direction when pressure is supplied to the pressure chamber, and
• said blocking element disposed in the rotor between the two parallel blades and is a unitary piece with a clamping cone disposed in an expandable central portion thereof in which the control element can be received, and
• when activated, the control element moves in the axial direction against the clamping cone and expands the central portion of the blocking element radially against the blades to retain the blades by friction in the radially internal position.