Rotor for a planar drive system and planar drive system

A rotor comprising:

• a housing, and
• at least one magnet arrangement;
• the housing comprising a basic housing body and a cover, and
• the at least one magnet arrangement being arranged in a recess of the basic housing body;
• wherein the cover is attached to the basic housing body such that the housing is configured to be fluid-tight, wherein the cover covers the recess and the at least one magnet arrangement is arranged in an interior of the fluid-tight housing;
• and
• wherein the basic housing body and the cover comprise a plastic, and wherein the cover and the basic housing body are laser-welded.

A rotor comprising:

• a housing, and
• at least one magnet arrangement;
• the housing comprising a basic housing body and a cover, and
• the at least one magnet arrangement being arranged in a recess of the basic housing body;
• wherein the cover is attached to the basic housing body such that the housing is configured to be fluid-tight, wherein the cover covers the recess and the at least one magnet arrangement is arranged in an interior of the fluid-tight housing;
• and
• wherein the interior of the fluid-tight housing is at least partially evacuated.

A rotor having:

• a housing, and
• at least one magnet arrangement;
• the housing comprising a basic housing body and a cover, and
• the at least one magnet arrangement being arranged in a recess of the basic housing body;
• wherein the cover is attached to the basic housing body such that the housing is configured to be fluid-tight, wherein the cover covers the recess and the at least one magnet arrangement is arranged in an interior of the fluid-tight housing;
• and
• wherein the interior of the fluid-tight housing is at least partially filled with a casting compound.

A planar drive system having:

• at least one stator module;
• wherein the stator module comprises at least one stator assembly with at least one coil arrangement,
• wherein the coil arrangement is energizable and is arranged to generate a stator magnetic field above a stator surface due to an energization,
• wherein the planar drive system further comprises a rotor,
• wherein the rotor is movable above the stator surface via of an interaction between the stator magnetic field and a rotor magnetic field of the magnet arrangement,
• wherein the planar drive system further comprises a separating device,
• wherein the separating device is arranged above the stator surface, and
• wherein the stator module is arranged on a first side of the separating device and the rotor is arranged on a second side of the separating device;
• and
• wherein the separating device is part of an operating housing, the rotor being movable within the operating housing.

A planar drive system comprising:

• a rotor, the rotor comprising a basic housing body with a recess,
• at least one magnet arrangement being arranged in the recess, and
• a cover adapted to the basic housing body in such a way that a housing is formed by the basic housing body and the cover,
• the housing being configured to be fluid-tight, and a magnet arrangement arranged in an interior of the fluid-tight housing;
• wherein the rotor is disposed in a vacuum during attachment of the cover or the rotor is heated to more than 100 degrees Celsius prior to and/or during attachment of the cover, such that the interior of the fluid-tight housing is substantially free of water.