Patent ID: 8902578

Claim:
A micro damper device for use in a data storage device, comprising: a main body, including: a first surface and a second surface opposite the first surface; a convex formed on a central portion of the main body, and defining a recessed portion with the first surface; and a coil wound around the convex, being disposed in the recessed portion, wherein the coil is adapted to introduce a current to form a magnetic field, and the magnetic field has a first pole and a second pole opposite the first pole; a cover, comprising: a first end, and a second end opposite the first end, wherein the second end faces the first surface of the main body; and a first magnetic component, being disposed in a central portion of the cover for generating a third pole and a fourth pole opposite the third pole, wherein the third pole faces the first pole: a sensor component, being disposed on a side of the main body opposite to the convex for measuring a first vibration direction of the second surface; and a control component electrically connected between the sensor component and the coil, being adapted to control the current according to the first vibration direction measured by the sensor component for adjusting the polarity and the strength of the first pole so that a force is generated between the first pole and the third pole to make the main body move along a second vibration direction opposite the first vibration direction; wherein the main body is disposed on the data storage device, the second surface of the main body is adapted to contact the data storage device, the cover is disposed on a supporting surface for driving the first end of the cover to contact the supporting surface; when the first vibration direction is away from the second surface, the polarity of the first pole is different from the polarity of the third pole, which makes the force be an attractive force; and when the first vibration direction is directed to the second surface, the polarity of the first pole is the same as the polarity of the third pole, which makes the force be a repulsive force.