Sliding door comprising a magnetic support and/or drive system comprising a row of magnets

A sliding door system comprising:

• a housing;
• a door leaf guided in the housing and movable in a driving direction;
• a row of magnets supported by one of the door leaf and the housing, the row of magnets being disposed in the driving direction and having a longitudinal direction, the magnets being arranged so that magnetization polarity of the magnets reverses at predetermined intervals in the longitudinal direction;
• and
• a coil arrangement supported by the other of the door leaf and the housing, the coil arrangement comprising a plurality of coil cores and a plurality of coils, the coils being wound around respective coil cores and spaced apart from each other in the longitudinal direction of the row of magnets, the coil cores having respective pole shoes.
• wherein when energized, the coils interact with the magnets to generate a thrust force for driving the door leaf in the driving direction,
• wherein at least one of the pole shoes and the magnets are formed so that cogging force of the drive system is reduced, and
• wherein the sliding door is formed as an arched sliding door or as a horizontal sliding wall.

A magnetic drive system for driving a door leaf in a driving direction, comprising:

• a plurality “y” of magnets with “p” magnetic poles disposed in the driving direction in at least one row having a longitudinal direction, the magnets being arranged so that magnetization polarity of the magnets reverses at predetermined intervals in the longitudinal direction;
• and
• a coil arrangement comprising a plurality of coil cores and a plurality “x ” of coils which are energized by a rotary current with “n” electrical phases, the coils being wound around respective coil cores and spaced apart from each other in the longitudinal direction of the row of magnets,
• wherein, when energized, the coils interact with the magnets to generate a thrust force for driving the door leaf in the driving direction, and
• wherein the magnets in the row of magnets are disposed relative to the coil cores so that the magnets as a whole have no abrupt polarity reversals in the driving direction with respect to the coil cores, and wherein
• n=x=3, and p=y=4, or
• n=x=5, and p=y=4, or
• n=x=5, and p=y=6, or
• n=x=5, and p=y=8, or
• n=x=6, and p=y=4, or
• n=x=8, and p=y=10.