Magnetic bearing
AssigneeIndustrial Technology Research Institute
InventorsChien-Chang Wang, Shyh-Jier Wang, Hung-Kuang Hsu, Yu-Hsiu Chang
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Abstract
A magnetic bearing includes a base, a spindle rotatably mounted onto the base and a magnetic portion mounted between the base and the spindle to provide a magnetic repulsion that suspends the spindle. The magnetic portion further includes an inner magnetic portion and an outer magnetic portion that repulse against each other. The outer magnetic portion is located around the inner magnetic portion so that the inner magnetic portion and the spindle are suspended. Therefore, mechanical friction in the magnetic bearing is minimized.
Claims12
A magnetic bearing comprising:
- a base;
- a spindle freely and rotatably supported on the base;
- a magnetic portion mounted on the base and around the spindle to provide a magnetic repulsion that suspends the spindle;
- and
- a retaining portion mounted on the base and between a tip end of the spindle and the base to support the spindle.
A magnetic bearing comprising:
- a yoke made of a magnetic material and having a top surface and a circumferential wall;
- a magnet firmly attached to an inner side of the circumferential wall;
- a spindle having a tip end and a connecting end opposed to the tip end, wherein the connecting end is securely connected to a center of the top surface;
- an inner magnetic portion securely mounted around the spindle;
- a base having a circuit board;
- and
- an outer magnetic portion securely mounted on the base and located around the inner magnetic portion, wherein the inner magnetic ring and the outer magnetic ring create a repulsion to suspend the spindle;
- a core securely mounted around the outer magnetic portion and having windings mounted therearound;
- and
- a retaining portion mounted on the base and between the tip end of the spindle and the base to support the spindle.
Dependencies are inferred from the claim text.