Vacuum pump

Vacuum pump according to one of the preceding claims characterized by the fact that at least two cavities (23, 23A, 23B, 23C) are provided which each are introduced from a frontal side (5, 17) of the rotor (1) and preferably extend into the central area of the rotor (1).

Vacuum pump according to one of the preceding claims characterized by the fact that the walls of the rotor (1) have a slight thickness.

Vacuum pump according to one of the preceding claims characterized by the fact that the transition between two wall areas of the rotor (1) having a different thickness is continuous, preferably without steps.

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor (1) has at least one support (13, 21) whose diameter is smaller, preferably only negligibly smaller, than the rotor diameter in the area of the slot (3) in which the blade is displaceable.

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor (1) has two supports (13, 21) and that the diameter of at least one of the supports (21, 13) is smaller, preferably significantly smaller, than the rotor diameter in the area of the slot (3).

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor (1) has at least two cavities disposed next to one another (23A, 23B, 23C) which are separated from one another by a rib (31).

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor (1) has at least one closed wall running transversely or, essentially transversely to the central longitudinal axis (29) of the rotor (1).

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor (1) can be energized with a torque via a coupling (35) formed by a disk (37).

Vacuum pump according to one of the preceding claims characterized by the fact that the ratio of the thickness (b) and the diameter (d) of the disk (37) lies in a range of 0.1≦b/d≦0.3.

Vacuum pump according to one of the preceding claims characterized by the fact that the disk (35) has at least one bearing surface (41) which lies on the rotor (1) for the transmission of a torque to an opposing surface (43).

Vacuum pump according to one of the preceding claims characterized by the fact that the opposing surface (43) is located on a drive segment (45A, 45B) projecting over the drive-side frontal side of the rotor (1).

Vacuum pump according to one of the preceding claims characterized by the fact that the ratio of the support length (l) of the drive segment (45A, 45B) and the diameter (D) of the rotor (1) lies in a range of 0.35≦l/D≦0.65.

Vacuum pump according to one of the preceding claims characterized by the fact that at least two drive segments (45A, 45B) are provided which are connected to one another by a closed ring (47).

Vacuum pump according to one of the preceding claims characterized by the fact that the coupling has a long hole (39) in which the drive shaft engages or a drive tongue, preferably a double surface (49), which engages in a corresponding slot in the drive shaft.

Vacuum pump according to one of the preceding claims characterized by the fact that, preferably formed as the double surface (9), a first longitudinal section (7) of the rotor (1) is provided with a vat-like cap (51) preferably consisting of sheet metal.

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor (1) has an elastic drive element (57) working together with a drive shaft.

Vacuum pump according to one of the preceding claims characterized by the fact that the drive element (57) consists of metal, preferably spring metal.

Vacuum pump according to one of the preceding claims characterized by the fact that the drive element projects into a slot (69) in the drive shaft (71) and is displaceably guided in it.

Vacuum pump according to one of the preceding claims characterized by the fact that the drive element engages in a slot-like recess (61) in the rotor.

Vacuum pump according to one of the preceding claims characterized by the fact that the drive element (57) is held undisplaceably in the recess (61).

Vacuum pump according to one of the preceding claims characterized by the fact that the drive element (57) is formed in the shape of a U.

Vacuum pump according to one of the preceding claims characterized by the fact that during the energizing of the drive element (57) with a torque it bears on at least one section (stop surface (77)) of the recess (61).

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor has at least one stop for the drive element.

Vacuum pump according to one of the preceding claims characterized by the fact that the drive element is angled off at its end engaging the recess in the rotor.

Vacuum pump according to one of the preceding claims characterized by the fact that the rotor (1) can be driven with the aid of the internal combustion engine of a motor vehicle and/or by a motor, in particular an electric motor.