One-piece magnet return path assembly for a disk drive actuator

G - Physics – 11 – B

Patent

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G11B 5/00 (2006.01) H02K 41/035 (2006.01) H02K 15/02 (2006.01)

Patent

CA 2221806

A one-piece magnet return path assembly (50) for a disk drive actuator comprises an upper plate (54), a lower plate (52) and a plurality of standoffs (56, 58, 60) extending between the upper and lower plates (54, 52) and establishing a predetermined spacing between the plates (54, 52). The upper and lower plates (54, 52) and the plurality of standoffs (56, 58, 60) are stamped from a single sheet of magnetically permeable material that is then bent at predetermined locations to form the completed one-piece magnet return path assembly (50).

Le dispositif fait d'une pièce (50) destiné à canaliser le flux de retour d'un aimant d'un système d'actionnement d'un lecteur de disques comprend une plaque supérieure (54), une plaque inférieure (52) et plusieurs éléments d'espacement (56, 58, 60) disposés entre les plaques supérieure et inférieure (54, 52) pour assurer un espacement prédéterminé entre les plaques (54, 52). Les plaques supérieure et inférieure (54, 52) et les éléments d'espacement (56, 58, 60) sont découpés à l'emporte-pièce dans une plaque unique d'un matériau magnétiquement perméable qui est ensuite repliée à des emplacements prédéterminés pour former le dispositif (50) complet monobloc canalisant le flux de retour de l'aimant.

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