ÖLGEDICHTETE VAKUUMPUMPE

摘要

PCT No. PCT/EP94/01680 Sec. 371 Date Jan. 29, 1996 Sec. 102(e) Date Jan. 29, 1996 PCT Filed May 26, 1994 PCT Pub. No. WO95/04222 PCT Pub. Date Feb. 9, 1995The invention pertains to an oil-sealed vacuum pump (1) with a pump chamber (8, 9), with a rotor 3 rotatively mounted therein, with a bearing piece (13) delimiting the pump chamber on the drive side and with a passage (35) in the bearing piece (13) which contains a coupling piece (37) used to interlock the rotor (3) with the shaft (36) of the drive motor (4) and a sealing ring (55) to seal off the coupling piece from the passage (35) in the bearing piece (13). To simplify manufacture of the pump, the invention proposes that the interlocking connections between rotor (3) and coupling piece (37) as well as coupling piece (37) and shaft (36) are effected from the faces, and that the coupling piece (37) is a support for a rotor (46) for an oil pump (45, 46), the pump chamber (45) of which is formed in the end plate (13).