Spindle motor with magnetic seal
AssigneePrecision Motors Deutsche Minebea GmbH
InventorJURGEN OELSCH
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Abstract
The present invention relates to a spindle motor with a magnetic seal. A method and an apparatus are described for sealing spindle motors, preferably those used for disk storage units.
Claims18
Method for sealing a spindle motor with a magnetic seal between stator and armature, comprising metal disks spaced apart and a magnetic disk arranged between them, and ferromagnetic fluid arranged to provide a seal towards the armature, and also an outer closure element in the form of a cap for protection against penetration of foreign bodies to the exterior, particularly for use in disk storage units, characterized in that both the cap (22) and the magnetic seal (12) are bonded to the open seat in the hub (4) with a single adhesive bead (26).
Spindle motor with a magnetic seal between stator and armature, comprising metal disks spaced apart and a magnetic disk arranged between them, and ferromagnetic fluid arranged to provide a seal towards the armature, and also an outer closure element in the form of a cap for protection against penetration of foreign bodies to the exterior, particularly for use in disk storage units, characterized in that the magnetic seal (12) and the cap (22) are bonded in the hub (4) without having to be spaced apart from each other.
Dependencies are inferred from the claim text.