Swinging actuators for use in magnetic disc type memory devices
First Claim
1. A swinging actuator for use in a magnetic memory device comprising:
- a stationary shaft;
at least two driving assemblies juxtaposed on said stationary shaft and extending in the opposite directions on both sides of said shaft;
each driving assembly including a head arm, a magnetic head mounted on one end of said head arm, a flat coil having a plane perpendicular to the axis of said shaft, a coil supporting member supporting said coil and extending on one side of said shaft opposite to said head arm; and
first and second flat permanent magnets spaced from said coil in an axial direction of said shaft, said first and second flat permanent magnets being spaced in a direction of arrangement of said flat coil and magnetized in said axial direction so that poles of the opposite polarities confront said flat coil.
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Accused Products
Abstract
A magnetic disc type memory device swinging actuator is constituted by a plurality of a driving assemblies juxtaposed on a stationary shaft and extending in the opposite direction. Each driving assembly include a head arm, a magnetic head mounted on one end of the head arm, a coil supporting member for supporting a flat coil and extending in the opposite direction to the head arm, and first and second permanent magnets spaced from the coil in an axial direction of the shaft and also spaced in a direction of arrangement of the flat coil. The first and second permanent magnets are magnetized in the axial direction of the shaft so that poles of opposite polarities confront the flat coil. The first and second permanent magnets are mounted on a common yoke and the flat coils are disposed in a closed magnetic flux path including the first and second permanent magnets and the yokes.
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Citations
9 Claims
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1. A swinging actuator for use in a magnetic memory device comprising:
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a stationary shaft; at least two driving assemblies juxtaposed on said stationary shaft and extending in the opposite directions on both sides of said shaft; each driving assembly including a head arm, a magnetic head mounted on one end of said head arm, a flat coil having a plane perpendicular to the axis of said shaft, a coil supporting member supporting said coil and extending on one side of said shaft opposite to said head arm; and first and second flat permanent magnets spaced from said coil in an axial direction of said shaft, said first and second flat permanent magnets being spaced in a direction of arrangement of said flat coil and magnetized in said axial direction so that poles of the opposite polarities confront said flat coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification