Moving magnet voice coil motor using halbach arrays
AssigneeSeagate Technology LLC
InventorPradeep Kumar Subrahmanyan
Life of this patent
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Abstract
An information handling system includes a base, a disc rotatably attached to the base, and an actuator assembly movably attached to the base the actuator assembly. An actuator assembly has an opening at the pivot therein. An actuator arm attached to the main body, and a voice coil motor is positioned within the opening of the actuator assembly. The voice coil motor also includes at least two magnets attached to the main body of the actuator arm. The magnets are arranged as a Halbach array. The voice coil motor is positioned within the opening of the actuator assembly, and near one end of the actuator assembly and at least one load spring and transducer are positioned at the other end of the actuator assembly.
Claims27
An actuator assembly for a disc drive comprising:
- a main body having an axis of rotation and an opening therein positioned around the axis of rotation;
- at least one actuator arm attached to the main body;
- and
- a portion of a voice coil motor positioned within the opening of the actuator assembly.
An information handling system comprising:
- a base
- a yoke attached to the base;
- a coil attached to the yoke;
- a disc rotatably attached to the base;
- and
- an actuator assembly having an opening therein, the actuator assembly further including at least two magnets positioned near the opening, the magnets and coil forming a voice coil motor, the actuator assembly capable of swinging through an arc and rotatably attached to the base about the yoke.
A disc drive comprising:
- a base;
- at least one disc rotatably attached to the base;
- an actuator assembly rotatably attached to the base, the actuator capable of passing through an arc;
- moving means attached to the actuator assembly.
Dependencies are inferred from the claim text.