Mechanical drive system operating by magnetic force
AssigneeC.D.R. Pompe S.p.A.
InventorsMaurizio Abordi, Alberto Cerizza
Life of this patent
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Abstract
A mechanical drive system operating by magnetic force, to be fitted on a pump, comprises a basic structure on which a drive shaft, which extends along a longitudinal axis, is supported rotatably. A driving element operatively connected to the drive shaft is provided with driving magnets arranged in a ring. A driven element provided with driven magnets arranged in a ring is also mounted on the basic structure. A bell is inserted between the driving element and the driven element and isolates the environment containing the driven element. The driving element and the driven element comprise respective cages each having seats for housing the respective driving magnets or driven magnets.
Claims28
A mechanical drive system operating by magnetic force, comprising:
- a basic structure,
- a drive shaft supported rotatably by the basic structure and defining a longitudinal axis,
- a driving element operatively connected to the drive shaft and provided with driving magnets, and
- a driven element mounted on the basic structure and provided with driven magnets,
- at least one of the driving element and the driven element of the drive system comprising a cage provided with seats for housing the respective driving magnets or driven magnets, characterized in that said seats have a shape complementary to the shape of the magnets and define projections or shoulder constituting a restraint in relation to radial displacement of the driving magnets or of the driven magnets.
A drive system according to any one of the preceding claims in which the cage is made of non-magnetic material.
A drive system according to any one of the preceding claims in which at least one of the driving element and the driven element comprises a metal insert.
A drive system according to one or more of the preceding claims in which the cage comprises at least one ring from which projections, distributed around the circumference of the ring, extend transversely, two adjacent projections defining the sides of a seat for housing a magnet.
A drive system according to any one of the preceding claims in which the driven element comprises a space for housing the respective cage, together with the driven magnets.
A drive system according to one or more of the preceding claims in which the driven element comprises drive means operatively connected to the cage.
A method of producing a mechanical drive system operating by magnetic force, in which a driving element provided with driving magnets is produced, a driven element provided with driven magnets is produced, and the driving element and the driven element are mounted on a basic structure, the driving magnets facing the driven magnets in order to transmit the drive from the driving element to the driven element,
- characterized in that:
- at least one of the two elements, that is, at least one of the driving element and the driven element, is produced by inserting the driving magnets or the driven magnets in seats of a cage, the seats having a shape complementary to the shape of the magnets, and defining projections or shoulders constituting a restraint in relation to radial displacement of the driving magnets or the driven magnets, the cage is mounted on the respective driving element or driven element.
Dependencies are inferred from the claim text.