Sealed connecting device between two housing end faces

A sealed connecting device comprising:

• a pot-shaped motor housing having a pot-shaped rim and an end face;
• a pump housing having an end face,
• a plastic brush-holder plate;
• a sealing ring member having in radial cross-section a U-shape mounted on the circumferential rim of the plastic brush-holder plate, wherein the U-shaped sealing ring member has pre-molded, radially aligned sealing tubes, the U-shaped sealing ring member being vulcanized rubber, wherein the plastic brush-holder plate having the mounted U-shaped sealing ring member is sealingly disposed between the end faces of the motor housing and the pump housing;
• connecting leads sealingly passing through the radially aligned tubes, the connecting leads being embedded free of compression in the plastic brush holder in the area where the end faces of the motor housing and pump housing are connected;
• a motor disposed in the motor housing;
• a rotor shaft connected to the motor, the rotor shaft having a first end and a second end,
• a bearing seat provided in the pump housing;
• and
• a rotor shaft bearing disposed in the bearing seat, wherein the first end of the rotor shaft is supported by the rotor shaft bearing which is tightly fit on the rotor shaft, the rotor shaft being concentrically disposed in the pump housing and the first end of the rotor shaft is axially braced against the brush-holder plate in the direction of the second end of the rotor shaft over the rotor shaft bearing that is tightly fit on the first end of the rotor shaft and wherein the brush-holder plate abuts on the first end of the rotor shaft of the motor without a friction-locking or form-locking connection with the rotor shaft bearing.

A sealed connecting device for connecting a motor housing to a pump housing, wherein the sealed connecting device is disposed between end faces of the motor housing and the pump housing, wherein the sealed connecting device comprises:

• a brush-holder plate;
• a sealing ring member having in radial cross-section a U-shape mounted on the circumferential rim of the brush-holder plate, wherein the U-shaped sealing ring member has pre-molded, radially aligned sealing tubes, wherein the brush-holder plate having the mounted U-shaped sealing ring member is sealingly disposed between the end faces of the motor housing and the pump housing;
• and
• connecting leads sealingly passing through the radially aligned tubes, the connecting leads being embedded free of compression in the brush holder in the area where the end faces of the motor housing and pump housing are connected.

A sealed connecting device adapted to be inserted between the end faces of two housings which are to be connected, comprising:

• a plate-shaped adapter with a rim having a sealing contact-making area at its outside circumference;
• a separate elastic seal mounted at said outside circumference of said plate-shaped adapter, extending over said rim;
• connecting leads radially extending from inside said plate-shaped adaptor to the outside, embedded in said adapter, at least in the sealing contact-making area;
• and
• pre-molded sealing tubes formed on said elastic seal, said connecting leads inserted through said sealing tubes, in a sealing abutting manner, as they extend radially outside said sealing contact making area, whereby, said connecting device can be inserted between the two housing end faces, with said plate in the plane of the housing end faces and sealing contact made in said sealing contact-making area, with said connecting leads free of compression in said contact making area.